{"id":3705,"date":"2026-09-08T10:35:08","date_gmt":"2026-09-08T10:35:08","guid":{"rendered":"https:\/\/qualitanceindia.com\/?p=3705"},"modified":"2026-10-31T08:12:08","modified_gmt":"2026-10-31T08:12:08","slug":"bis-certification-for-uncoated-stress-relieved-strand-is-6006-2014","status":"publish","type":"post","link":"https:\/\/qualitanceindia.com\/bis-certification-for-uncoated-stress-relieved-strand-is-6006-2014\/","title":{"rendered":"BIS Certification Consultancy for Uncoated Stress Relieved Strand for Prestressed Concrete | IS 6006:2014"},"content":{"rendered":"<h2>Introduction<\/h2>\n<p class=\"isSelectedEnd\">Uncoated stress relieved strands are high-strength steel products used extensively in <strong>prestressed concrete construction<\/strong>. They are critical components in systems where concrete is intentionally subjected to compressive stresses through the application of tensioned steel, making the quality and long-term performance of the strand extremely important.<\/p>\n<p class=\"isSelectedEnd\">Uncoated stress relieved strand must possess controlled mechanical properties, dimensional accuracy, suitable chemical composition and low relaxation characteristics so that it can perform reliably in prestressed concrete structures.<\/p>\n<p class=\"isSelectedEnd\">The applicable Indian Standard is <strong>IS 6006:2014 \u2013 Uncoated Stress Relieved Strand for Prestressed Concrete \u2013 Specification (Second Revision)<\/strong>. The BIS Product Manual identifies certification under <strong>Scheme-I<\/strong>, with requirements covering two-wire, three-wire and seven-wire strands, Classes 1 and 2 where applicable, sampling, grouping, testing, quality control and marking.<\/p>\n<p class=\"isSelectedEnd\">The product is also covered by the <strong>Steel and Steel Products (Quality Control) Order, 2024<\/strong>. The order requires the specified steel products, including IS 6006:2014, to bear the BIS Standard Mark under a BIS licence in accordance with Scheme-I. IS 6006:2014 is listed with ITC(HS) Code <strong>73121030<\/strong> and an implementation date of <strong>with immediate effect<\/strong>.<\/p>\n<p class=\"isSelectedEnd\"><strong>Qualitance India provides complete BIS Certification consultancy for Uncoated Stress Relieved Strand<\/strong>, including product assessment, grouping, sample planning, testing coordination, documentation, BIS application filing, factory inspection preparation, licence processing and continuing compliance support.<\/p>\n<h2>What is IS 6006:2014?<\/h2>\n<p class=\"isSelectedEnd\"><strong>IS 6006:2014<\/strong> is the Indian Standard titled:<\/p>\n<p class=\"isSelectedEnd\"><strong>\u201cUncoated Stress Relieved Strand for Prestressed Concrete \u2013 Specification\u201d<\/strong><\/p>\n<p class=\"isSelectedEnd\">It covers the requirements for the manufacture, supply and testing of <strong>uncoated, stress relieved, high tensile steel strands<\/strong> intended for use in prestressed concrete. The standard covers:<\/p>\n<ul data-spread=\"false\">\n<li>Two-wire strand<\/li>\n<li>Three-wire strand<\/li>\n<li>Seven-wire strand<\/li>\n<li>Seven-wire Class 1<\/li>\n<li>Seven-wire Class 2<\/li>\n<\/ul>\n<p class=\"isSelectedEnd\">The standard controls important properties such as:<\/p>\n<ul data-spread=\"false\">\n<li>Chemical composition<\/li>\n<li>Strand construction<\/li>\n<li>Nominal diameter<\/li>\n<li>Dimensional tolerances<\/li>\n<li>Breaking strength<\/li>\n<li>Proof load<\/li>\n<li>Elongation<\/li>\n<li>Relaxation<\/li>\n<li>Workmanship<\/li>\n<li>Finish<\/li>\n<\/ul>\n<h2>Is BIS Certification Mandatory for IS 6006:2014?<\/h2>\n<p class=\"isSelectedEnd\">Yes.<\/p>\n<p class=\"isSelectedEnd\">IS 6006:2014 is included in the <strong>Steel and Steel Products (Quality Control) Order, 2024<\/strong>. The QCO provides that specified steel products must bear the Standard Mark under a BIS licence according to Scheme-I. IS 6006:2014 is specifically included in the Schedule and is subject to implementation with immediate effect.<\/p>\n<p class=\"isSelectedEnd\">The BIS Scheme-I listing also identifies <strong>IS 6006:2014 \u2013 Uncoated Stress Relieved Strand for Prestressed Concrete<\/strong> among steel and iron products covered under the applicable BIS certification framework.<\/p>\n<p class=\"isSelectedEnd\">Therefore, manufacturers supplying this regulated product in India should assess their BIS licence requirements before manufacture, sale or supply.<\/p>\n<h2>Current BIS Product Manual for IS 6006:2014<\/h2>\n<p class=\"isSelectedEnd\">The BIS Product Manual identified for this product is:<\/p>\n<p class=\"isSelectedEnd\"><strong>PM\/IS 6006\/1\/January 2019<\/strong><\/p>\n<p class=\"isSelectedEnd\">The Product Manual is intended for BIS Regional\/Branch Offices, licence holders and prospective applicants seeking certification under Scheme-I. It specifies:<\/p>\n<ul data-spread=\"false\">\n<li>Product title<\/li>\n<li>Raw material requirements<\/li>\n<li>Grouping guidelines<\/li>\n<li>Sample requirements<\/li>\n<li>Testing equipment<\/li>\n<li>Scheme of Inspection and Testing<\/li>\n<li>Product scope<\/li>\n<li>Test certificate<\/li>\n<li>Marking provisions<\/li>\n<\/ul>\n<h2>Products Covered Under IS 6006:2014<\/h2>\n<p class=\"isSelectedEnd\">The standard covers the following basic strand constructions:<\/p>\n<h3>Two-Wire Strand<\/h3>\n<p class=\"isSelectedEnd\">A strand consisting of two individual wires.<\/p>\n<h3>Three-Wire Strand<\/h3>\n<p class=\"isSelectedEnd\">A strand consisting of three individual wires.<\/p>\n<h3>Seven-Wire Strand<\/h3>\n<p class=\"isSelectedEnd\">A strand consisting of seven wires.<\/p>\n<p class=\"isSelectedEnd\">Seven-wire strands are further classified into:<\/p>\n<ul data-spread=\"false\">\n<li>Class 1<\/li>\n<li>Class 2<\/li>\n<\/ul>\n<h2>BIS Grouping Guidelines for Uncoated Stress Relieved Strand<\/h2>\n<p class=\"isSelectedEnd\">Grouping is an important part of the BIS certification process because manufacturers may produce different strand constructions, wire diameters and classes.<\/p>\n<p class=\"isSelectedEnd\">The BIS Product Manual groups the product broadly as follows:<\/p>\n<h3>Group I<\/h3>\n<ul data-spread=\"false\">\n<li>2-ply 2 mm<\/li>\n<li>2-ply 3 mm<\/li>\n<\/ul>\n<h3>Group II<\/h3>\n<ul data-spread=\"false\">\n<li>3-ply 3 mm<\/li>\n<\/ul>\n<h3>Group III<\/h3>\n<p class=\"isSelectedEnd\">Seven-wire Class 1 strands including:<\/p>\n<ul data-spread=\"false\">\n<li>6.3 mm<\/li>\n<li>7.9 mm<\/li>\n<li>9.5 mm<\/li>\n<li>11.1 mm<\/li>\n<li>12.7 mm<\/li>\n<li>15.2 mm<\/li>\n<\/ul>\n<h3>Group IV<\/h3>\n<p class=\"isSelectedEnd\">Seven-wire Class 2 strands including:<\/p>\n<ul data-spread=\"false\">\n<li>9.5 mm<\/li>\n<li>11.1 mm<\/li>\n<li>12.7 mm<\/li>\n<li>15.2 mm<\/li>\n<\/ul>\n<p class=\"isSelectedEnd\">The Product Manual states that the <strong>highest size of wire from each group shall be tested to cover the varieties within that group<\/strong>.<\/p>\n<p class=\"isSelectedEnd\">The firm must declare the varieties proposed for inclusion in the licence, while the final scope may be restricted according to the manufacturer&#8217;s manufacturing and testing capabilities. During licence operation, BIS should ensure that varieties in the licence scope are tested in rotation as far as possible.<\/p>\n<h2>BIS Sample Requirement for IS 6006:2014<\/h2>\n<p class=\"isSelectedEnd\">The Product Manual specifies the following sample requirements:<\/p>\n<p class=\"isSelectedEnd\"><strong>3 metres for mechanical testing<\/strong><\/p>\n<p class=\"isSelectedEnd\"><strong>3 metres for relaxation testing<\/strong><\/p>\n<p class=\"isSelectedEnd\"><strong>50 grams of drillings for chemical testing<\/strong><\/p>\n<p class=\"isSelectedEnd\">The correct representative sample must be selected according to the proposed licence scope and grouping requirements.<\/p>\n<p class=\"isSelectedEnd\">Sample preparation is particularly important where the manufacturer wants coverage of multiple strand sizes or classes.<\/p>\n<h2>Raw Material Requirements<\/h2>\n<p class=\"isSelectedEnd\">The Product Manual identifies <strong>wire \u2013 Clause 4.1 of IS 6006:2014<\/strong> as the relevant raw-material provision.<\/p>\n<p class=\"isSelectedEnd\">The standard also incorporates general requirements for the supply of metallurgical materials through <strong>IS 1387<\/strong> and references appropriate steel and wire standards for material and testing requirements.<\/p>\n<p class=\"isSelectedEnd\">Manufacturers should maintain effective control over:<\/p>\n<ul data-spread=\"false\">\n<li>Incoming wire<\/li>\n<li>Wire grade<\/li>\n<li>Heat\/cast traceability<\/li>\n<li>Supplier documents<\/li>\n<li>Chemical composition<\/li>\n<li>Mechanical properties<\/li>\n<li>Incoming inspection<\/li>\n<li>Production records<\/li>\n<li>Finished coil identification<\/li>\n<\/ul>\n<h2>Manufacturing Process for Stress Relieved Strand<\/h2>\n<p class=\"isSelectedEnd\">A typical production process may include:<\/p>\n<p class=\"isSelectedEnd\"><strong>Raw Material Receipt \u2192 Inspection \u2192 Wire Preparation \u2192 Cleaning\/Surface Preparation \u2192 Wire Drawing \u2192 Stranding \u2192 Stress Relieving\/Stabilizing \u2192 Dimensional Inspection \u2192 Mechanical Testing \u2192 Relaxation Testing \u2192 Chemical Verification \u2192 Surface Inspection \u2192 Coiling \u2192 Marking \u2192 Packing<\/strong><\/p>\n<p class=\"isSelectedEnd\">The exact process varies according to plant design and manufacturing technology.<\/p>\n<p class=\"isSelectedEnd\">Process control must ensure that the finished strand consistently meets the applicable requirements of IS 6006:2014.<\/p>\n<h2>What Does \u201cStress Relieved\u201d Mean?<\/h2>\n<p class=\"isSelectedEnd\">Stress relieving is a manufacturing treatment used to stabilize the mechanical behaviour of the steel strand after wire drawing and stranding.<\/p>\n<p class=\"isSelectedEnd\">The treatment is particularly important for prestressed concrete applications because excessive relaxation of the steel under sustained stress can reduce the effectiveness of prestressing over time.<\/p>\n<p class=\"isSelectedEnd\">Therefore, relaxation performance is one of the key characteristics of the product.<\/p>\n<h2>Main BIS Tests for IS 6006:2014<\/h2>\n<p class=\"isSelectedEnd\">The standard identifies several important quality parameters.<\/p>\n<h3>1. Chemical Composition<\/h3>\n<p class=\"isSelectedEnd\">Chemical composition must comply with the applicable requirements of IS 6006:2014.<\/p>\n<p class=\"isSelectedEnd\">The standard references chemical analysis methods for relevant elements, including phosphorus and sulphur.<\/p>\n<p class=\"isSelectedEnd\">Chemical testing is performed using an appropriate sample prepared from the strand.<\/p>\n<h3>2. Strand Construction<\/h3>\n<p class=\"isSelectedEnd\">The finished product must meet the requirements for the specified strand construction.<\/p>\n<p class=\"isSelectedEnd\">The construction is relevant to:<\/p>\n<ul data-spread=\"false\">\n<li>Number of wires<\/li>\n<li>Arrangement<\/li>\n<li>Strand configuration<\/li>\n<li>Workmanship<\/li>\n<\/ul>\n<h3>3. Nominal Diameter<\/h3>\n<p class=\"isSelectedEnd\">The nominal diameter of the strand is a critical dimensional parameter.<\/p>\n<p class=\"isSelectedEnd\">Diameter is checked against the applicable tolerance requirements given in the standard.<\/p>\n<h3>4. Weight<\/h3>\n<p class=\"isSelectedEnd\">The mass\/weight of the strand is checked according to the applicable requirements.<\/p>\n<h3>5. Breaking Strength<\/h3>\n<p class=\"isSelectedEnd\">Breaking strength is one of the principal mechanical properties.<\/p>\n<p class=\"isSelectedEnd\">The test determines whether the finished strand can withstand the required tensile load.<\/p>\n<p class=\"isSelectedEnd\">A suitable Universal Testing Machine is used for the tensile test.<\/p>\n<h3>6. Proof Load<\/h3>\n<p class=\"isSelectedEnd\">Proof-load requirements are part of the mechanical-performance requirements identified for IS 6006:2014.<\/p>\n<p class=\"isSelectedEnd\">The proof-load test provides an additional measure of performance under specified loading.<\/p>\n<h3>7. Elongation<\/h3>\n<p class=\"isSelectedEnd\">Elongation is determined during the tensile test.<\/p>\n<p class=\"isSelectedEnd\">The strand must meet the applicable elongation requirement associated with its designation and class.<\/p>\n<h3>8. Relaxation<\/h3>\n<p class=\"isSelectedEnd\">Relaxation is one of the most important tests for stress-relieved strand.<\/p>\n<p class=\"isSelectedEnd\">The test evaluates the loss of stress under specified sustained loading over time.<\/p>\n<p class=\"isSelectedEnd\">The Product Manual specifically requires separate sampling for relaxation testing, and current BIS LIMS records show laboratory testing arrangements that distinguish relaxation testing from the other mechanical tests.<\/p>\n<h3>9. Workmanship and Finish<\/h3>\n<p class=\"isSelectedEnd\">The finished strand must meet the prescribed workmanship and finish requirements.<\/p>\n<p class=\"isSelectedEnd\">The inspection checks help ensure that the product is suitable for use in prestressed concrete and is free from unacceptable defects.<\/p>\n<h2>Why Relaxation Testing is Important<\/h2>\n<p class=\"isSelectedEnd\">Prestressed concrete strands remain under significant tensile stress during service.<\/p>\n<p class=\"isSelectedEnd\">If the steel experiences excessive relaxation, the stress level can gradually decrease and affect the prestressing force.<\/p>\n<p class=\"isSelectedEnd\">For this reason, relaxation performance is an important part of the quality evaluation of stress-relieved strand.<\/p>\n<p class=\"isSelectedEnd\">The current BIS LIMS listings show that relaxation testing may be a substantial part of the laboratory cost and test duration. One current listing shows <strong>\u20b930,000<\/strong> specifically for a 1000-hour relaxation test, while another complete listed scope shows <strong>\u20b937,000 including the 1000-hour relaxation test<\/strong>.<\/p>\n<h2>BIS Testing Equipment for Stress Relieved Strand<\/h2>\n<p class=\"isSelectedEnd\">The BIS Product Manual provides an equipment list under Annex B.<\/p>\n<p class=\"isSelectedEnd\">Depending on the specific tests and laboratory arrangement, important equipment includes:<\/p>\n<h3>Tensile Testing<\/h3>\n<ul data-spread=\"false\">\n<li>Universal Testing Machine<\/li>\n<li>Suitable tensile fixtures<\/li>\n<li>Measuring arrangement for elongation<\/li>\n<\/ul>\n<h3>Dimensional Measurement<\/h3>\n<ul data-spread=\"false\">\n<li>Micrometer<\/li>\n<li>Precision measuring instruments<\/li>\n<\/ul>\n<h3>Relaxation Testing<\/h3>\n<ul data-spread=\"false\">\n<li>Relaxation testing apparatus<\/li>\n<li>Load-maintaining arrangement<\/li>\n<li>Temperature-control arrangement<\/li>\n<li>Appropriate timing\/recording system<\/li>\n<\/ul>\n<h3>Chemical Testing<\/h3>\n<ul data-spread=\"false\">\n<li>Chemical-analysis equipment<\/li>\n<li>Analytical balance<\/li>\n<li>Laboratory glassware<\/li>\n<li>Heating equipment<\/li>\n<li>Reagents<\/li>\n<li>Suitable instrumentation depending on the analytical method<\/li>\n<\/ul>\n<p class=\"isSelectedEnd\">The final equipment requirement must be assessed against the current Product Manual, IS 6006:2014 and the exact proposed licence scope.<\/p>\n<h2>Laboratory Requirements<\/h2>\n<p class=\"isSelectedEnd\">The BIS Scheme of Testing and Inspection states that a suitably equipped and staffed laboratory shall be maintained for carrying out the prescribed tests.<\/p>\n<p class=\"isSelectedEnd\">It also requires:<\/p>\n<ul data-spread=\"false\">\n<li>Periodic checking\/calibration of test equipment<\/li>\n<li>Maintenance of calibration records<\/li>\n<li>Maintenance of test and inspection records<\/li>\n<li>Availability of records for BIS review<\/li>\n<\/ul>\n<p class=\"isSelectedEnd\">A strong laboratory arrangement is therefore important for both initial BIS certification and continued licence compliance.<\/p>\n<h2>External Laboratory Testing<\/h2>\n<p class=\"isSelectedEnd\">The manufacturer&#8217;s test arrangements should be planned according to the current BIS provisions and the scope of its facilities.<\/p>\n<p class=\"isSelectedEnd\">For specialized tests such as long-duration relaxation testing, an appropriately equipped external laboratory may be required where permitted by the certification framework.<\/p>\n<p class=\"isSelectedEnd\">Current BIS LIMS records show that some laboratories have limitations for relaxation testing. For example, one current BIS laboratory listing states that its facility is <strong>not available for the Stress Relaxation test<\/strong>, while other laboratories list dedicated relaxation charges.<\/p>\n<p class=\"isSelectedEnd\">Therefore, laboratory selection should be made before dispatching the samples.<\/p>\n<h2>Scheme of Inspection and Testing<\/h2>\n<p class=\"isSelectedEnd\">The Scheme of Testing and Inspection requires the manufacturer to maintain a systematic quality-control programme.<\/p>\n<p class=\"isSelectedEnd\">The prescribed controls cover the production and testing of the product and require appropriate records.<\/p>\n<p class=\"isSelectedEnd\">The manufacturer should maintain controls over:<\/p>\n<ul data-spread=\"false\">\n<li>Raw material<\/li>\n<li>Chemical composition<\/li>\n<li>Wire dimensions<\/li>\n<li>Strand construction<\/li>\n<li>Weight<\/li>\n<li>Breaking strength<\/li>\n<li>Proof load<\/li>\n<li>Elongation<\/li>\n<li>Relaxation<\/li>\n<li>Workmanship<\/li>\n<li>Finish<\/li>\n<li>Coil identification<\/li>\n<li>Test certification<\/li>\n<\/ul>\n<p class=\"isSelectedEnd\">The scheme applies the prescribed levels of control to the complete production covered by the certification.<\/p>\n<h2>Control Unit and Production Traceability<\/h2>\n<p class=\"isSelectedEnd\">For a product such as prestressed concrete strand, traceability is particularly important.<\/p>\n<p class=\"isSelectedEnd\">The manufacturer&#8217;s quality system should allow a finished coil or production batch to be traced to:<\/p>\n<ul data-spread=\"false\">\n<li>Raw-material heat\/cast<\/li>\n<li>Wire production<\/li>\n<li>Stranding process<\/li>\n<li>Stress-relieving process<\/li>\n<li>Test results<\/li>\n<li>Coil number<\/li>\n<li>Dispatch details<\/li>\n<\/ul>\n<p class=\"isSelectedEnd\">The Product Manual and Scheme of Inspection and Testing require appropriate records and traceability arrangements.<\/p>\n<h2>BIS Test Certificate<\/h2>\n<p class=\"isSelectedEnd\">The Scheme of Testing and Inspection provides for a test certificate for each consignment of ISI-certified material.<\/p>\n<p class=\"isSelectedEnd\">The certificate is intended to contain:<\/p>\n<ul data-spread=\"false\">\n<li>ISI\/BIS marking information<\/li>\n<li>Coil or bundle number<\/li>\n<li>Size and designation<\/li>\n<li>Corresponding test results<\/li>\n<\/ul>\n<p class=\"isSelectedEnd\">The Product Manual&#8217;s sample test certificate states that the material conforms to IS 6006:2014 and records the relevant chemical and mechanical test results against the order\/consignment details.<\/p>\n<h2>Marking Requirements<\/h2>\n<p class=\"isSelectedEnd\">The BIS Scheme of Testing and Inspection specifies that the Standard Mark is to be applied to the finished coil through a metallic or cardboard label securely attached to the coil, provided the coil conforms to all requirements.<\/p>\n<p class=\"isSelectedEnd\">Each coil is also required to carry identification including:<\/p>\n<ul data-spread=\"false\">\n<li>Manufacturer name<\/li>\n<li>Registered trademark, if applicable<\/li>\n<li>Name of material<\/li>\n<li>Size designation and class, where applicable<\/li>\n<li>Length of strand<\/li>\n<li>\u201cMade in India\u201d, where required<\/li>\n<li>Coil number<\/li>\n<\/ul>\n<p class=\"isSelectedEnd\">The exact marking arrangement should be implemented according to the licence schedule, applicable BIS instructions and the current certification requirements.<\/p>\n<h2>Factory Inspection for BIS Certification<\/h2>\n<p class=\"isSelectedEnd\">The manufacturing facility must demonstrate that it can consistently produce compliant strand.<\/p>\n<p class=\"isSelectedEnd\">Important factory areas include:<\/p>\n<h3>Raw Material Section<\/h3>\n<ul data-spread=\"false\">\n<li>Wire\/rod storage<\/li>\n<li>Heat\/cast identification<\/li>\n<li>Incoming inspection<\/li>\n<li>Material certificates<\/li>\n<\/ul>\n<h3>Wire Manufacturing<\/h3>\n<ul data-spread=\"false\">\n<li>Drawing equipment<\/li>\n<li>Die control<\/li>\n<li>Lubrication<\/li>\n<li>Diameter control<\/li>\n<\/ul>\n<h3>Stranding Section<\/h3>\n<ul data-spread=\"false\">\n<li>Stranding machine<\/li>\n<li>Wire arrangement<\/li>\n<li>Strand geometry<\/li>\n<li>Process control<\/li>\n<\/ul>\n<h3>Stress-Relieving Section<\/h3>\n<ul data-spread=\"false\">\n<li>Heating\/stabilizing equipment<\/li>\n<li>Temperature control<\/li>\n<li>Process records<\/li>\n<\/ul>\n<h3>Testing Laboratory<\/h3>\n<ul data-spread=\"false\">\n<li>UTM<\/li>\n<li>Diameter measurement<\/li>\n<li>Weight measurement<\/li>\n<li>Chemical testing<\/li>\n<li>Relaxation testing or permitted external arrangement<\/li>\n<\/ul>\n<h3>Quality Control<\/h3>\n<ul data-spread=\"false\">\n<li>Inspection records<\/li>\n<li>Test reports<\/li>\n<li>Calibration records<\/li>\n<li>Non-conformity records<\/li>\n<li>Coil traceability<\/li>\n<li>Dispatch records<\/li>\n<\/ul>\n<p class=\"isSelectedEnd\">Qualitance India assists manufacturers in preparing these areas before the applicable BIS assessment.<\/p>\n<h2>BIS Certification Process for Uncoated Stress Relieved Strand<\/h2>\n<p class=\"isSelectedEnd\">The typical certification process is:<\/p>\n<p class=\"isSelectedEnd\"><strong>Product Identification \u2192 IS 6006:2014 Applicability Check \u2192 Product Scope \u2192 Strand Construction\/Class Selection \u2192 Grouping Review \u2192 Factory Assessment \u2192 Laboratory Assessment \u2192 Sample Preparation \u2192 Testing \u2192 Documentation \u2192 BIS Application \u2192 Factory Inspection \u2192 Compliance \u2192 BIS Licence \u2192 Standard Marking \u2192 Ongoing Compliance<\/strong><\/p>\n<p class=\"isSelectedEnd\">The actual process may vary depending on the manufacturer&#8217;s current facilities, existing certification status and BIS requirements.<\/p>\n<h2>Documents Required for BIS Certification<\/h2>\n<p class=\"isSelectedEnd\">Common documents include:<\/p>\n<ul data-spread=\"false\">\n<li>Company registration documents<\/li>\n<li>Factory address proof<\/li>\n<li>Factory ownership\/lease documents<\/li>\n<li>Authorized signatory details<\/li>\n<li>Manufacturing process flow chart<\/li>\n<li>Factory layout<\/li>\n<li>Machinery list<\/li>\n<li>Stranding-machine details<\/li>\n<li>Stress-relieving equipment details<\/li>\n<li>Testing equipment list<\/li>\n<li>Calibration certificates<\/li>\n<li>Product drawings\/specifications<\/li>\n<li>Strand size\/designation details<\/li>\n<li>Raw-material specifications<\/li>\n<li>Material certificates<\/li>\n<li>Test reports<\/li>\n<li>Quality-control documents<\/li>\n<li>Production records<\/li>\n<li>Test records<\/li>\n<li>Coil identification procedure<\/li>\n<li>Applicable declarations and undertakings<\/li>\n<li>Trademark\/brand documents, where applicable<\/li>\n<\/ul>\n<p class=\"isSelectedEnd\">The final checklist should be prepared based on the manufacturer&#8217;s exact product scope and current BIS requirements.<\/p>\n<h2>Current BIS Testing Charges for IS 6006:2014<\/h2>\n<p class=\"isSelectedEnd\">Current BIS LIMS listings show active testing facilities for IS 6006:2014.<\/p>\n<p class=\"isSelectedEnd\">Examples include:<\/p>\n<p class=\"isSelectedEnd\"><strong>\u20b94,035 excluding the Proof Stress and Relaxation Tests<\/strong> at one BIS laboratory listing.<\/p>\n<p class=\"isSelectedEnd\">Another current laboratory listing shows:<\/p>\n<p class=\"isSelectedEnd\"><strong>\u20b96,300 excluding relaxation test<\/strong><\/p>\n<p class=\"isSelectedEnd\"><strong>\u20b930,000 for a 1000-hour relaxation test<\/strong><\/p>\n<p class=\"isSelectedEnd\"><strong>\u20b937,000 including the 1000-hour relaxation test<\/strong>.<\/p>\n<p class=\"isSelectedEnd\">These are laboratory-specific displayed charges and may change based on scope, test inclusions, exclusions, laboratory and applicable taxes.<\/p>\n<p class=\"isSelectedEnd\">Because relaxation testing can substantially affect both <strong>cost and certification timeline<\/strong>, it should be planned at the beginning of the certification process.<\/p>\n<h2>Cost of BIS Certification for Stress Relieved Strand<\/h2>\n<p class=\"isSelectedEnd\">The complete certification cost can include:<\/p>\n<ul data-spread=\"false\">\n<li>BIS application charges<\/li>\n<li>BIS licence-related fees<\/li>\n<li>Laboratory testing<\/li>\n<li>Relaxation testing<\/li>\n<li>Sample preparation<\/li>\n<li>Factory inspection expenses<\/li>\n<li>Calibration<\/li>\n<li>Laboratory equipment<\/li>\n<li>Documentation<\/li>\n<li>Consultancy charges<\/li>\n<li>Ongoing compliance costs<\/li>\n<\/ul>\n<p class=\"isSelectedEnd\">The final cost depends on:<\/p>\n<ul data-spread=\"false\">\n<li>Strand type<\/li>\n<li>Number of groups<\/li>\n<li>Class<\/li>\n<li>Designations<\/li>\n<li>Testing facilities<\/li>\n<li>In-house laboratory capability<\/li>\n<li>External laboratory requirements<\/li>\n<li>Relaxation testing arrangement<\/li>\n<\/ul>\n<h2>How Long Does BIS Certification Take?<\/h2>\n<p class=\"isSelectedEnd\">The certification timeline depends heavily on the testing programme.<\/p>\n<p class=\"isSelectedEnd\">Routine mechanical and dimensional testing may be completed much faster than long-duration relaxation testing.<\/p>\n<p class=\"isSelectedEnd\">Current BIS LIMS listings demonstrate that <strong>100-hour and 1000-hour relaxation testing<\/strong> may be offered separately, with the 1000-hour test involving a significantly longer test period.<\/p>\n<p class=\"isSelectedEnd\">Other factors affecting the timeline include:<\/p>\n<ul data-spread=\"false\">\n<li>Sample readiness<\/li>\n<li>Laboratory availability<\/li>\n<li>Factory readiness<\/li>\n<li>Documentation<\/li>\n<li>Application processing<\/li>\n<li>Factory inspection<\/li>\n<li>Resolution of BIS observations<\/li>\n<\/ul>\n<h2>Common Reasons for BIS Certification Delays<\/h2>\n<h3>Incorrect Strand Scope<\/h3>\n<p class=\"isSelectedEnd\">Selecting too many designations or classes without proper testing arrangements can complicate the application.<\/p>\n<h3>Incorrect Grouping<\/h3>\n<p class=\"isSelectedEnd\">The representative sample must be selected according to the BIS grouping guidelines.<\/p>\n<h3>Relaxation-Test Planning<\/h3>\n<p class=\"isSelectedEnd\">Long-duration testing needs to be planned early.<\/p>\n<h3>Mechanical Test Failure<\/h3>\n<p class=\"isSelectedEnd\">Breaking strength, proof load or elongation failure can result in corrective action.<\/p>\n<h3>Dimensional Non-Conformity<\/h3>\n<p class=\"isSelectedEnd\">Incorrect strand diameter or construction can affect conformity.<\/p>\n<h3>Chemical Non-Conformity<\/h3>\n<p class=\"isSelectedEnd\">Raw-material composition outside the required limits can result in failure.<\/p>\n<h3>Poor Stress-Relieving Control<\/h3>\n<p class=\"isSelectedEnd\">Inconsistent stabilization conditions can affect relaxation performance.<\/p>\n<h3>Laboratory Gaps<\/h3>\n<p class=\"isSelectedEnd\">The manufacturer may not have the required laboratory equipment.<\/p>\n<h3>Calibration Problems<\/h3>\n<p class=\"isSelectedEnd\">Missing or expired calibration certificates can affect inspection readiness.<\/p>\n<h3>Incomplete Traceability<\/h3>\n<p class=\"isSelectedEnd\">Coil numbers, raw-material records and test results should remain linked.<\/p>\n<h2>Who Needs BIS Certification for IS 6006:2014?<\/h2>\n<p class=\"isSelectedEnd\">The requirements are relevant to manufacturers of <strong>uncoated stress relieved steel strands for prestressed concrete<\/strong> covered by the applicable QCO.<\/p>\n<p class=\"isSelectedEnd\">Potential users\/suppliers include manufacturers supplying:<\/p>\n<ul data-spread=\"false\">\n<li>Prestressed concrete producers<\/li>\n<li>Infrastructure projects<\/li>\n<li>Bridges<\/li>\n<li>Flyovers<\/li>\n<li>Railway projects<\/li>\n<li>Precast concrete manufacturers<\/li>\n<li>Industrial structures<\/li>\n<li>Construction contractors<\/li>\n<li>Government infrastructure projects<\/li>\n<li>Power and utility structures<\/li>\n<\/ul>\n<p class=\"isSelectedEnd\">Importers and traders should separately verify their legal responsibilities under the applicable steel QCO.<\/p>\n<h2>Benefits of BIS Certification<\/h2>\n<h3>Regulatory Compliance<\/h3>\n<p class=\"isSelectedEnd\">BIS certification is required for the regulated product under the applicable QCO framework.<\/p>\n<h3>Quality Assurance<\/h3>\n<p class=\"isSelectedEnd\">The certification process establishes systematic material, production and testing controls.<\/p>\n<h3>Structural Reliability<\/h3>\n<p class=\"isSelectedEnd\">Conforming strand helps provide confidence in the steel component used in prestressed concrete systems.<\/p>\n<h3>Buyer Confidence<\/h3>\n<p class=\"isSelectedEnd\">BIS-certified material can help demonstrate compliance to project owners and institutional buyers.<\/p>\n<h3>Government &amp; Infrastructure Opportunities<\/h3>\n<p class=\"isSelectedEnd\">Certification supports supply where BIS compliance is specified by regulations, tenders or procurement specifications.<\/p>\n<h3>Production Consistency<\/h3>\n<p class=\"isSelectedEnd\">Regular testing and traceability improve manufacturing control.<\/p>\n<h2>BIS Certification Consultancy for Prestressed Concrete Strand Manufacturers<\/h2>\n<p class=\"isSelectedEnd\">Qualitance India provides end-to-end support for manufacturers seeking BIS certification for <strong>IS 6006:2014<\/strong>.<\/p>\n<h3>Product &amp; Standard Identification<\/h3>\n<p class=\"isSelectedEnd\">We review your strand product and confirm the applicable Indian Standard and certification route.<\/p>\n<h3>Scope &amp; Grouping Guidance<\/h3>\n<p class=\"isSelectedEnd\">We help determine:<\/p>\n<ul data-spread=\"false\">\n<li>Two-wire strand<\/li>\n<li>Three-wire strand<\/li>\n<li>Seven-wire strand<\/li>\n<li>Class 1<\/li>\n<li>Class 2<\/li>\n<li>Applicable designations<\/li>\n<\/ul>\n<h3>Sample Planning<\/h3>\n<p class=\"isSelectedEnd\">We help arrange:<\/p>\n<ul data-spread=\"false\">\n<li>Mechanical samples<\/li>\n<li>Relaxation samples<\/li>\n<li>Chemical-test drillings<\/li>\n<\/ul>\n<h3>Testing Coordination<\/h3>\n<p class=\"isSelectedEnd\">We coordinate the applicable laboratory testing and help plan specialized relaxation testing.<\/p>\n<h3>Documentation Support<\/h3>\n<p class=\"isSelectedEnd\">We help prepare and organize the application and technical documents.<\/p>\n<h3>Factory Preparation<\/h3>\n<p class=\"isSelectedEnd\">We review manufacturing, stranding, stress-relieving, laboratory and quality-control facilities.<\/p>\n<h3>BIS Application Filing<\/h3>\n<p class=\"isSelectedEnd\">We assist with preparing and submitting the BIS certification application.<\/p>\n<h3>Factory Inspection Assistance<\/h3>\n<p class=\"isSelectedEnd\">We help prepare the manufacturer for the applicable BIS assessment.<\/p>\n<h3>Query &amp; Compliance Support<\/h3>\n<p class=\"isSelectedEnd\">We assist in coordinating responses to technical and documentary observations.<\/p>\n<h3>Licence Processing<\/h3>\n<p class=\"isSelectedEnd\">We support the BIS certification process through the licence stage.<\/p>\n<h3>Post-Licence Compliance<\/h3>\n<p class=\"isSelectedEnd\">We provide ongoing support for renewal, scope and other applicable BIS compliance activities.<\/p>\n<h2>Quick BIS Certification Checklist<\/h2>\n<p class=\"isSelectedEnd\">Before starting BIS certification for IS 6006:2014, ensure:<\/p>\n<p class=\"isSelectedEnd\">\u2611 IS 6006:2014 applicability confirmed<br \/>\n\u2611 Product construction identified<br \/>\n\u2611 Class identified<br \/>\n\u2611 Proposed sizes\/designations finalized<br \/>\n\u2611 Grouping reviewed<br \/>\n\u2611 Wire\/raw material traceability established<br \/>\n\u2611 Wire-drawing facility available<br \/>\n\u2611 Stranding machine available<br \/>\n\u2611 Stress-relieving equipment available<br \/>\n\u2611 UTM available<br \/>\n\u2611 Relaxation-testing arrangement established<br \/>\n\u2611 Chemical-testing facility available<br \/>\n\u2611 Calibration certificates available<br \/>\n\u2611 Quality-control system established<br \/>\n\u2611 Representative samples prepared<br \/>\n\u2611 Test reports completed<br \/>\n\u2611 BIS documents prepared<br \/>\n\u2611 Factory ready for assessment<br \/>\n\u2611 Test certificate format prepared<br \/>\n\u2611 BIS marking arrangements established<\/p>\n<h2>Frequently Asked Questions<\/h2>\n<h3>1. What is IS 6006:2014?<\/h3>\n<p class=\"isSelectedEnd\">IS 6006:2014 is the Indian Standard for <strong>Uncoated Stress Relieved Strand for Prestressed Concrete \u2013 Specification<\/strong>.<\/p>\n<h3>2. Is BIS certification mandatory for IS 6006:2014?<\/h3>\n<p class=\"isSelectedEnd\">Yes. IS 6006:2014 is included in the Steel and Steel Products (Quality Control) Order, 2024, which requires the specified product to bear the Standard Mark under a BIS licence according to Scheme-I.<\/p>\n<h3>3. Which BIS scheme applies?<\/h3>\n<p class=\"isSelectedEnd\">Certification is under <strong>Scheme-I<\/strong>.<\/p>\n<h3>4. What types of strand are covered?<\/h3>\n<p class=\"isSelectedEnd\">The standard covers two-wire, three-wire and seven-wire strands. Seven-wire strands are classified as Class 1 and Class 2.<\/p>\n<h3>5. What is the sample requirement?<\/h3>\n<p class=\"isSelectedEnd\">The Product Manual specifies 3 metres for mechanical testing, 3 metres for relaxation testing and 50 grams of drillings for chemical testing.<\/p>\n<h3>6. Is product grouping available?<\/h3>\n<p class=\"isSelectedEnd\">Yes. The Product Manual provides grouping guidelines based on strand construction, size and class.<\/p>\n<h3>7. Which sample is used for grouping?<\/h3>\n<p class=\"isSelectedEnd\">The highest size of wire from each group is tested to cover the varieties within that group, subject to the grouping provisions and manufacturing\/testing capability.<\/p>\n<h3>8. Can one sample cover all strand sizes?<\/h3>\n<p class=\"isSelectedEnd\">Not automatically. Coverage depends on the applicable group and the representative sample selected under the BIS grouping guidelines.<\/p>\n<h3>9. What are the main tests?<\/h3>\n<p class=\"isSelectedEnd\">Important tests include chemical composition, strand construction, diameter, weight, breaking strength, proof load, elongation, relaxation and workmanship\/finish.<\/p>\n<h3>10. Is relaxation testing required?<\/h3>\n<p class=\"isSelectedEnd\">Yes. Relaxation is a key requirement of the standard and is separately addressed in the Product Manual and testing arrangements.<\/p>\n<h3>11. Why is relaxation testing important?<\/h3>\n<p class=\"isSelectedEnd\">It assesses the loss of stress under sustained loading and is important for the long-term performance of prestressing steel.<\/p>\n<h3>12. What is a proof-load test?<\/h3>\n<p class=\"isSelectedEnd\">Proof-load testing verifies performance under the specified proof-loading condition.<\/p>\n<h3>13. Is tensile testing required?<\/h3>\n<p class=\"isSelectedEnd\">Yes. Breaking strength and related tensile properties are important mechanical requirements.<\/p>\n<h3>14. Is elongation tested?<\/h3>\n<p class=\"isSelectedEnd\">Yes. Elongation forms part of the mechanical-performance requirements.<\/p>\n<h3>15. Is chemical testing required?<\/h3>\n<p class=\"isSelectedEnd\">Yes. Chemical composition is an important conformity requirement.<\/p>\n<h3>16. What raw material is specified?<\/h3>\n<p class=\"isSelectedEnd\">The Product Manual identifies wire under Clause 4.1 of IS 6006:2014 as the relevant raw-material provision.<\/p>\n<h3>17. Is a Universal Testing Machine required?<\/h3>\n<p class=\"isSelectedEnd\">A suitable UTM is required for the applicable tensile testing.<\/p>\n<h3>18. Is a relaxation testing machine required?<\/h3>\n<p class=\"isSelectedEnd\">An appropriate relaxation-testing arrangement is required for the applicable relaxation test.<\/p>\n<h3>19. Does every laboratory offer relaxation testing?<\/h3>\n<p class=\"isSelectedEnd\">No. Current BIS LIMS records show that some laboratories do not offer stress-relaxation testing, while others provide dedicated relaxation-test facilities.<\/p>\n<h3>20. Can relaxation testing affect the certification timeline?<\/h3>\n<p class=\"isSelectedEnd\">Yes. Long-duration relaxation tests can significantly extend the laboratory-testing schedule.<\/p>\n<h3>21. What is the current relaxation testing cost?<\/h3>\n<p class=\"isSelectedEnd\">Current BIS LIMS examples show approximately \u20b930,000 for a 1000-hour relaxation test at one laboratory, with another displayed package at \u20b937,000 including the 1000-hour test.<\/p>\n<h3>22. What is the current non-relaxation testing cost?<\/h3>\n<p class=\"isSelectedEnd\">One current BIS laboratory listing shows \u20b94,035 excluding proof-stress and relaxation testing.<\/p>\n<h3>23. Are these laboratory charges fixed?<\/h3>\n<p class=\"isSelectedEnd\">No. Charges vary by laboratory, test scope, exclusions, testing facility and applicable taxes.<\/p>\n<h3>24. Is factory inspection required?<\/h3>\n<p class=\"isSelectedEnd\">The BIS certification process requires the manufacturer to demonstrate suitable manufacturing and testing capability.<\/p>\n<h3>25. Is an in-house laboratory required?<\/h3>\n<p class=\"isSelectedEnd\">The Scheme of Testing and Inspection requires a suitably equipped and staffed laboratory for the prescribed testing arrangements.<\/p>\n<h3>26. Are calibration records required?<\/h3>\n<p class=\"isSelectedEnd\">Yes. Testing equipment must be periodically checked\/calibrated and records maintained.<\/p>\n<h3>27. Are test records required?<\/h3>\n<p class=\"isSelectedEnd\">Yes. Test and inspection records must be maintained and made available to BIS when required.<\/p>\n<h3>28. Is a test certificate required?<\/h3>\n<p class=\"isSelectedEnd\">Yes. The BIS Scheme of Testing and Inspection provides for a test certificate for each consignment of certified material.<\/p>\n<h3>29. What information is given on the coil?<\/h3>\n<p class=\"isSelectedEnd\">The prescribed coil label includes manufacturer identification, material name, size\/designation and class where applicable, strand length and coil number.<\/p>\n<h3>30. Can Qualitance India help with BIS certification for IS 6006:2014?<\/h3>\n<p class=\"isSelectedEnd\">Yes. Qualitance India provides complete consultancy covering product scope, grouping, sample planning, testing coordination, documentation, factory preparation, BIS application, inspection assistance, licence processing and post-licence compliance.<\/p>\n<h2>Related BIS Certification Services<\/h2>\n<p class=\"isSelectedEnd\">Qualitance India also provides consultancy for:<\/p>\n<ul data-spread=\"false\">\n<li>BIS Certification<\/li>\n<li>ISI Mark Certification<\/li>\n<li>Steel Product Certification<\/li>\n<li>Prestressed Concrete Steel Certification<\/li>\n<li>BIS Scheme-I Certification<\/li>\n<li>BIS Licence Renewal<\/li>\n<li>BIS Scope Extension<\/li>\n<li>Product Testing Coordination<\/li>\n<li>BIS Documentation<\/li>\n<li>Factory Inspection Assistance<\/li>\n<li>Quality Control Order Applicability<\/li>\n<li>Product Grouping Guidance<\/li>\n<li>Technical Compliance Support<\/li>\n<\/ul>\n<h2>Related Steel &amp; Prestressed Concrete Products<\/h2>\n<p class=\"isSelectedEnd\">Manufacturers may also require BIS certification consultancy for:<\/p>\n<ul data-spread=\"false\">\n<li><strong>IS 6003<\/strong> \u2013 Indented Wire for Prestressed Concrete<\/li>\n<li><strong>IS 1785 (Part 1)<\/strong> \u2013 Cold-Drawn Stress Relieved Steel Wire for Prestressed Concrete<\/li>\n<li><strong>IS 1785 (Part 2)<\/strong> \u2013 Plain Hard-Drawn Steel Wire for Prestressed Concrete<\/li>\n<li><strong>IS 14268:2022<\/strong> \u2013 Uncoated Stress Relieved Low Relaxation Seven-Wire Strand for Prestressed Concrete<\/li>\n<li>Fusion Bonded Epoxy Coated Reinforcing Bars<\/li>\n<li>Other regulated prestressing steel products<\/li>\n<\/ul>\n<p class=\"isSelectedEnd\">The applicable standard should always be verified against the exact product before certification.<\/p>\n<h2>Why Choose Qualitance India?<\/h2>\n<p class=\"isSelectedEnd\">Qualitance India provides complete BIS consultancy for manufacturers requiring certification for regulated steel products.<\/p>\n<h3>Product Assessment<\/h3>\n<p class=\"isSelectedEnd\">We identify the applicable Indian Standard and certification route.<\/p>\n<h3>Scope Planning<\/h3>\n<p class=\"isSelectedEnd\">We help determine the appropriate product types, classes and designations.<\/p>\n<h3>Grouping Guidance<\/h3>\n<p class=\"isSelectedEnd\">We help select representative samples according to BIS grouping provisions.<\/p>\n<h3>Testing Coordination<\/h3>\n<p class=\"isSelectedEnd\">We coordinate mechanical, chemical and relaxation testing.<\/p>\n<h3>Documentation<\/h3>\n<p class=\"isSelectedEnd\">We assist with preparation of BIS application documents and technical records.<\/p>\n<h3>Factory Preparation<\/h3>\n<p class=\"isSelectedEnd\">We review machinery, laboratory facilities, calibration and quality-control arrangements.<\/p>\n<h3>Application Support<\/h3>\n<p class=\"isSelectedEnd\">We assist with BIS application filing and follow-up.<\/p>\n<h3>Factory Inspection Assistance<\/h3>\n<p class=\"isSelectedEnd\">We help prepare the unit for BIS assessment.<\/p>\n<h3>Licence Processing<\/h3>\n<p class=\"isSelectedEnd\">We support the certification process through the licence stage.<\/p>\n<h3>Post-Licence Compliance<\/h3>\n<p class=\"isSelectedEnd\">We provide support for applicable renewal, scope extension and continuing compliance.<\/p>\n<h2>Contact Qualitance India<\/h2>\n<p class=\"isSelectedEnd\"><strong>Qualitance India \u2013 Your Certification &amp; Compliance Partner<\/strong><\/p>\n<p class=\"isSelectedEnd\"><strong>Phone:<\/strong> +91 93106 15170<br \/>\n<strong>Email:<\/strong> <a href=\"mailto:info@qualitanceindia.com\">info@qualitanceindia.com<\/a><br \/>\n<strong>Website:<\/strong> <a href=\"https:\/\/qualitanceindia.com\/\" data-rich-text-autolink=\"\">https:\/\/qualitanceindia.com\/<\/a><\/p>\n<p class=\"isSelectedEnd\">For <strong>BIS Certification of Uncoated Stress Relieved Strand for Prestressed Concrete as per IS 6006:2014<\/strong>, Qualitance India provides complete support from product assessment and grouping to testing, documentation, factory inspection preparation, BIS application, licence processing and post-licence compliance.<\/p>\n<h2>Conclusion<\/h2>\n<p class=\"isSelectedEnd\">Uncoated stress relieved strand is a critical high-strength steel component used in prestressed concrete construction. Its <strong>breaking strength, proof load, elongation, diameter, chemical composition, relaxation performance, workmanship and finish<\/strong> must be carefully controlled to ensure reliable performance.<\/p>\n<p class=\"isSelectedEnd\"><strong>IS 6006:2014<\/strong> covers two-wire, three-wire and seven-wire strands, including Class 1 and Class 2 seven-wire strands. The BIS Product Manual provides specific grouping guidelines and requires <strong>3 metres for mechanical testing, 3 metres for relaxation testing and 50 grams of drillings for chemical testing<\/strong>.<\/p>\n<p class=\"isSelectedEnd\">The product is covered by the <strong>Steel and Steel Products (Quality Control) Order, 2024<\/strong>, which requires the Standard Mark under a BIS licence according to Scheme-I, with IS 6006:2014 listed for immediate implementation.<\/p>\n<p class=\"isSelectedEnd\">For manufacturers, successful BIS certification requires much more than laboratory testing. Proper product grouping, sample selection, raw-material traceability, manufacturing controls, stress-relieving arrangements, laboratory facilities, calibration, relaxation testing, documentation and factory readiness all need to be managed correctly.<\/p>\n<p class=\"isSelectedEnd\"><strong>Qualitance India provides end-to-end BIS Certification consultancy for Uncoated Stress Relieved Strand for Prestressed Concrete<\/strong>, helping manufacturers manage testing, documentation, factory assessment, application processing, licensing and ongoing compliance.<\/p>\n<p><strong>Need BIS Certification for Uncoated Stress Relieved Strand as per IS 6006:2014? Contact Qualitance India for complete BIS licence and compliance support.<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Introduction Uncoated stress relieved strands are high-strength steel products used extensively in prestressed concrete construction. They are critical components in systems where concrete is intentionally subjected to compressive stresses through the application of tensioned steel, making the quality and long-term performance of the strand extremely important. Uncoated stress relieved strand must possess controlled mechanical properties, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3706,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"slim_seo":{"title":"BIS Certi. for Uncoated Stress Relieved Strand","description":"Get BIS Certification for Uncoated Stress Relieved Strand for Prestressed Concrete as per IS 6006:2014. Complete support for testing, documentation,\u2026"},"_slim_seo_primary_term_category":0,"_slim_seo_primary_term_post_tag":0,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3705","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/qualitanceindia.com\/wp-json\/wp\/v2\/posts\/3705","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/qualitanceindia.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/qualitanceindia.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/qualitanceindia.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/qualitanceindia.com\/wp-json\/wp\/v2\/comments?post=3705"}],"version-history":[{"count":1,"href":"https:\/\/qualitanceindia.com\/wp-json\/wp\/v2\/posts\/3705\/revisions"}],"predecessor-version":[{"id":3707,"href":"https:\/\/qualitanceindia.com\/wp-json\/wp\/v2\/posts\/3705\/revisions\/3707"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/qualitanceindia.com\/wp-json\/wp\/v2\/media\/3706"}],"wp:attachment":[{"href":"https:\/\/qualitanceindia.com\/wp-json\/wp\/v2\/media?parent=3705"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qualitanceindia.com\/wp-json\/wp\/v2\/categories?post=3705"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qualitanceindia.com\/wp-json\/wp\/v2\/tags?post=3705"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}