BIS Certification Consultant for Galvanized Steel Sheets (Plain and Corrugated) | IS 277:2003 | Qualitance India

BIS Certification Consultant for Galvanized Steel Sheets (Plain and Corrugated) | IS 277:2003 | Qualitance India

Introduction

Galvanized steel sheets are widely used in construction, roofing, infrastructure, industrial fabrication and manufacturing. The zinc coating provides corrosion protection to the steel substrate, helping improve durability in suitable service conditions. In India, galvanized steel sheets and strips are covered by the IS 277 series of Indian Standards. The specification addresses plain galvanized sheets, strips supplied in coils and corrugated galvanized sheets, including requirements relating to the base steel, zinc coating, mechanical properties, dimensions, workmanship and testing. Important standards update: Although this article uses the requested title referring to IS 277:2003, BIS records IS 277:2003 as withdrawn on 14 March 2022. The BIS Product Manual available for certification is based on IS 277:2018 – Galvanized Steel Strips and Sheets (Plain and Corrugated). Manufacturers should confirm the applicable edition and current certification requirements before filing an application. <Cite refs={["turn262761search0","turn908893view0"]}/> Qualitance India provides BIS Certification Consultancy for galvanized steel sheet manufacturers, helping with product-scope assessment, documentation, testing coordination and factory inspection preparation.

What Are Galvanized Steel Sheets?

Galvanized steel sheets are steel sheets or strips coated with zinc to help protect the underlying steel from corrosion. Depending on the manufacturing process and intended application, these products may be supplied as:

• Plain galvanized steel sheets
• Galvanized steel strips and coils
• Corrugated galvanized steel sheets
• Sheets with specified coating classes and finishes

Plain sheets may be used for fabrication and manufacturing, while corrugated sheets are commonly used in roofing and cladding applications. The appropriate product grade, coating class, dimensions and finish depend on the applicable standard and purchaser requirements.

What Is IS 277?

IS 277 is the Indian Standard for Galvanized Steel Sheets (Plain and Corrugated), with the current published revision identified in the BIS Product Manual as IS 277:2018, Seventh Revision. The standard covers galvanized steel strips and sheets in plain and corrugated forms. Its requirements address the steel substrate, zinc coating, mechanical properties, dimensions, finish and product quality. <Cite refs={["turn908893view0","turn262761search21"]}/> Key areas covered by the current product documentation include:

• Chemical composition of the base steel
• Zinc coating mass
• Mechanical properties, where applicable
• Bend testing
• Coating finish and surface treatment
• Surface finish and freedom from defects
• Mass and dimensional tolerances
• Dimensions of plain sheets and strips
• Dimensions and profile requirements for corrugated sheets
• Product marking and test certification

The precise acceptance criteria must be checked against the applicable edition of the standard and its amendments.

Is BIS Certification Mandatory for Galvanized Steel Sheets?

BIS lists galvanized steel sheets under the compulsory-certification framework. The BIS Scheme-I product listing includes IS 277:2003, and BIS material concerning steel products identifies galvanized steel sheets among products covered by compulsory certification. <Cite refs={["turn262761search5","turn262761search24"]}/> However, the standard edition and legal applicability must be checked carefully because IS 277:2003 has been withdrawn and IS 277:2018 is listed in current BIS laboratory records. Before manufacturing, importing or selling galvanized steel sheets, businesses should verify:

1. The currently applicable edition of IS 277.
2. The latest Quality Control Order and any amendments.
3. The applicable BIS certification scheme and licence requirements.
4. Whether any exemptions or special provisions apply to the particular product or transaction.
5. The marking, testing and conformity requirements applicable to the manufacturer.

Do not rely solely on an older licence listing or the existence of an Indian Standard to determine the current legal position.

Applicable BIS Certification Scheme

The BIS Product Manual for IS 277:2018 describes certification under Scheme-I of the BIS (Conformity Assessment) Regulations, 2018. <Cite refs={["turn908893view0"]}/> Where a BIS licence is required, the general certification process involves:

1. Confirming the applicable standard and product category.
2. Identifying the intended product grades, coating classes, finishes and dimensions.
3. Reviewing the manufacturing process and testing arrangements.
4. Preparing the company and factory documentation.
5. Submitting the application and applicable fees.
6. Arranging product testing and factory assessment as required by BIS.
7. Responding to observations raised during application scrutiny or inspection.
8. Obtaining the applicable licence before using the BIS Standard Mark on covered products.

The exact process depends on the current BIS requirements, the manufacturing setup and the proposed licence scope.

Product Types and Licence Scope

The IS 277:2018 Product Manual covers galvanized steel strips and sheets in plain and corrugated forms. The scope of a licence can include parameters such as grade, designation, coating class, coating finish type, surface treatment and dimensions. <Cite refs={["turn908893view0"]}/>

1. Plain galvanized steel sheets and strips

These products may be supplied as cut sheets or coils. Their applicable specification and licence scope should identify the relevant grade, coating requirements and dimensions.

2. Corrugated galvanized steel sheets

Corrugated sheets have a formed profile designed for their intended application. Relevant product characteristics include thickness, dimensions, corrugation depth, corrugation pitch and coating requirements.

3. Product grade and designation

The current Product Manual identifies ordinary and other specified grades and designations. The actual grades that may be included depend on the applicable standard, manufacturing capability and certification assessment.

4. Coating class

The zinc coating class is an important part of the product specification. The selected coating class must be supported by appropriate production controls and testing.

5. Surface treatment and coating finish

The licence scope may also specify coating finish and surface-treatment categories, as applicable. The manufacturer should declare the variants it intends to supply and confirm the associated requirements before applying for certification. The licence scope should be prepared against the current Product Manual rather than copied from an older IS 277:2003 licence.

Raw Materials Required

The current BIS Product Manual identifies cold-rolled steel sheets and strips conforming to the relevant parts of IS 513, hot-rolled steel sheets and strips conforming to IS 1079, and zinc ingots conforming to specified grades of IS 209 or IS 13229 among the raw-material references. <Cite refs={["turn908893view0"]}/>

1. Base steel

The base steel must conform to the applicable requirements for the selected product and grade. Manufacturers should maintain incoming-material identification and test documentation.

2. Zinc ingots

The zinc used for galvanizing must meet the applicable requirements. Supplier certificates and incoming-material records should be maintained.

3. Material traceability

The manufacturing unit should maintain records linking incoming steel and zinc to the production lots and finished galvanized products. The exact raw-material acceptance criteria and testing requirements should be checked against the current standard and the applicable inspection and testing plan.

Manufacturing Process for Galvanized Steel Sheets

The production process depends on the type of galvanized product and the manufacturer's equipment. A typical process includes the following stages.

Step 1: Incoming material inspection

Steel sheets, strips or coils and zinc ingots are checked against their applicable specifications. The manufacturer records the material identity and relevant supplier documentation.

Step 2: Surface preparation

The steel surface is prepared for galvanizing. Suitable surface preparation is necessary for consistent coating formation and adherence.

Step 3: Galvanizing

The steel is passed through the galvanizing process so that the zinc coating forms on the steel surface. The manufacturing unit must control the process to achieve the specified coating characteristics.

Step 4: Coating inspection

The coated material is inspected for coating mass, finish, surface treatment and visible defects as applicable.

Step 5: Forming and corrugation

For corrugated sheets, the coated steel is formed to the required profile. Relevant dimensions and corrugation characteristics are checked against the specification and purchaser requirements.

Step 6: Final inspection and testing

The finished sheets or coils are checked for mechanical properties, bend performance, dimensions, mass, coating characteristics and other applicable requirements.

Step 7: Identification and dispatch

Conforming products are identified, recorded and supplied with the relevant test documentation. Where BIS certification applies, marking must comply with the current licence and standard requirements.

Testing Requirements for IS 277:2018

Testing helps establish whether galvanized steel sheets and strips meet the applicable specification.

1. Chemical composition

The chemical composition of the base steel is checked against the relevant requirements. The current Product Manual includes provisions for product analysis and refers to recognised chemical or instrumental test methods. <Cite refs={["turn908893view0"]}/>

2. Zinc coating mass

The mass of the zinc coating is an important performance characteristic. The Product Manual refers to IS 6745 for determining coating mass.

3. Mechanical properties

Mechanical testing may include yield stress, tensile strength and elongation, as applicable to the grade and purchaser requirements.

4. Bend test

The bend test evaluates the product's behaviour under the specified bending conditions. The current Product Manual identifies bend testing as part of the inspection and testing plan. <Cite refs={["turn908893view0"]}/>

5. Coating finish and surface treatment

The coating finish and surface treatment are assessed against the applicable specification and the declared product requirements.

6. Surface finish and workmanship

The sheets are examined for surface quality and freedom from defects that could affect conformity or suitability for the intended use.

7. Mass and dimensions

The product is checked for mass, thickness, width, length and other applicable dimensional requirements.

8. Corrugation dimensions

For corrugated sheets, testing and inspection may include corrugation depth, pitch, profile and associated dimensions. The exact test methods, acceptance limits and sampling frequency must be taken from the current edition of IS 277 and its applicable inspection and testing plan.

Sample Requirements for BIS Testing

The BIS Product Manual for IS 277:2018 specifies the following sample quantities. <Cite refs={["turn908893view0"]}/>

Testing purpose	Sample quantity
Mechanical tests	2 samples, each 0.5 m × 0.5 m
Chemical tests	5 pieces, each 5 cm × 5 cm, or 50 g of drillings

These quantities are based on the referenced Product Manual. The actual sampling plan may depend on the product type, declared scope and instructions applicable to the certification application.

Grouping guidelines

The current Product Manual describes the following grouping approach:

• For each classification of corrugated galvanized sheets, a sample of the highest thickness and highest coating mass/grade is drawn to cover the declared range, subject to the manual's provisions.
• For each classification of plain galvanized sheets and strips, a sample of the highest thickness and highest coating mass/grade is drawn.
• To cover both plain and corrugated products under one licence, an additional plain-sheet or strip sample is required for bend testing.
• Manufacturers must have complete manufacturing and testing arrangements for the range proposed for inclusion.
• For adding a further grade classification to an existing licence, samples are drawn according to the relevant procedure.

<Cite refs={["turn908893view0"]}/> Grouping should not be interpreted as automatic coverage of every grade, thickness or coating class. The final licence scope is subject to BIS assessment.

Laboratory and Testing Equipment Requirements

The current Product Manual lists major equipment used for testing galvanized steel sheets and strips. Examples include:

• Spectrometer or other suitable equipment for chemical analysis
• Equipment for determining zinc coating mass
• Universal testing machine for tensile testing
• Steel mandrels and related fixtures for bend testing
• Surface roughness tester
• Vernier caliper and micrometer
• Measuring tape and steel scale
• Weighing balance and supporting laboratory equipment

<Cite refs={["turn908893view0"]}/> The list is indicative. The equipment required at the factory depends on the applicable tests and the manufacturer's proposed product scope. The current inspection and testing plan states that the factory laboratory must be suitably equipped and staffed. The manufacturer must also maintain a calibration plan and test records. Certain tests may be subcontracted only where permitted under the applicable provisions and to an acceptable laboratory. <Cite refs={["turn908893view0"]}/>

Factory Inspection and Quality-Control Requirements

Factory assessment is intended to establish whether the manufacturer can consistently produce galvanized steel sheets and strips conforming to the standard. The current Product Manual defines a control unit by reference to strips or sheets of the same dimensions and coating class manufactured under essentially similar conditions using steel from one cast and zinc ingots from the same cast. It also specifies ongoing testing and recordkeeping requirements. <Cite refs={["turn908893view0"]}/> Manufacturers should prepare the following arrangements:

• Incoming steel and zinc inspection
• Material and production traceability
• Control of galvanizing parameters
• Monitoring of coating mass and finish
• Mechanical and dimensional inspection
• Testing equipment calibration and maintenance
• Records of product inspection and testing
• Segregation and control of nonconforming products
• Test certificates for each consignment as required
• Product marking according to the applicable standard and licence

The Product Manual states that the test certificate for BIS-certified material should include the Standard Mark, cast or control-unit number and corresponding test results. <Cite refs={["turn908893view0"]}/>

Documents Required for BIS Certification

The exact documentation depends on the application and manufacturing setup. The following is a practical preparation checklist.

1. Company documents

• Business registration or incorporation documents, as applicable
• PAN and GST registration, where applicable
• Manufacturing-unit address and contact details
• Authorisation for the person signing the application
• Details of the authorised signatory

2. Manufacturing documents

• Manufacturing process flow chart
• Details of galvanizing facilities and equipment
• Details of sheet-cutting and corrugation facilities, where applicable
• List of manufacturing machinery
• Proposed product grades and coating classes
• Proposed thickness, width and length ranges
• Raw-material specifications and supplier details

3. Quality-control documents

• Quality-control procedures and inspection formats
• Incoming steel and zinc inspection records
• Production and control-unit records
• Coating mass and finish inspection records
• Mechanical and dimensional test records
• Calibration plan and relevant certificates
• Procedures for handling nonconforming products
• Product identification and traceability records

4. Laboratory documents

• Details of in-house laboratory facilities
• List of testing equipment
• Details of testing personnel
• Equipment calibration records
• External laboratory details, if subcontract testing is proposed
• Available test reports for the proposed product scope

This checklist is a preparation guide, not a substitute for the current BIS application checklist. Additional information may be requested during scrutiny or factory assessment.

Common Challenges in BIS Certification

Manufacturers may encounter delays when the proposed scope or testing arrangements do not align with the applicable requirements. Common challenges include:

• Applying against a withdrawn edition of the standard
• Unclear declaration of product grades and coating classes
• Incomplete raw-material traceability
• Inadequate control of zinc coating mass
• Missing mechanical or bend-test records
• Incomplete dimensional inspection records
• Insufficient laboratory equipment or calibration records
• Poor segregation and documentation of nonconforming products
• Assuming one sample automatically covers all product types
• Failure to verify current Quality Control Order provisions and amendments

A pre-application review can help identify these issues before the formal certification process begins.

How Qualitance India Can Help

Qualitance India provides BIS Certification Consultancy for galvanized steel sheets, strips, coils and corrugated sheets. Our consultancy support can include:

• Review of the applicable standard and certification route
• Assessment of the proposed product grades and licence scope
• Guidance on coating classes, finishes and dimensions
• Preparation and review of BIS application documentation
• Review of manufacturing and quality-control arrangements
• Guidance on laboratory and calibration requirements
• Sample-testing coordination
• Preparation for factory inspection
• Support in addressing application observations
• Guidance on applicable marking and ongoing compliance requirements

The consultancy scope is finalised according to the manufacturer's requirements and the services agreed for the project. BIS retains authority over application scrutiny, testing acceptance, factory assessment and licence decisions.

Frequently Asked Questions (FAQs)

1. What is IS 277?

IS 277 is the Indian Standard for galvanized steel sheets and strips, including plain and corrugated products. The current Product Manual refers to IS 277:2018. <Cite refs={["turn908893view0"]}/>

2. Is IS 277:2003 still valid?

BIS records IS 277:2003 as withdrawn on 14 March 2022. Manufacturers should refer to the applicable current edition, identified in the Product Manual as IS 277:2018, and confirm any subsequent updates. <Cite refs={["turn262761search0","turn908893view0"]}/>

3. Is BIS certification mandatory for galvanized steel sheets?

BIS identifies galvanized steel sheets within its compulsory-certification framework. However, manufacturers should verify the current legal order, applicable edition and any exemptions or transition provisions before supplying the product. <Cite refs={["turn262761search5","turn262761search24"]}/>

4. What tests are required for galvanized steel sheets?

Important test areas include chemical composition, zinc coating mass, mechanical properties where applicable, bend testing, coating finish, surface treatment, surface quality, mass and dimensions.

5. What sample quantity is specified in the Product Manual?

The IS 277:2018 Product Manual specifies two 0.5 m × 0.5 m samples for mechanical tests and five 5 cm × 5 cm pieces or 50 g of drillings for chemical testing. <Cite refs={["turn908893view0"]}/>

6. Can plain and corrugated sheets be included in the same licence?

The Product Manual provides grouping guidance for covering both types. It specifies an additional plain-sheet or strip sample for bend testing when both plain and corrugated products are included, subject to the applicable provisions and BIS assessment. <Cite refs={["turn908893view0"]}/>

7. Which raw materials are referenced in the Product Manual?

The manual refers to relevant cold-rolled steel sheets and strips under IS 513, hot-rolled steel sheets and strips under IS 1079, and zinc ingots conforming to specified grades of IS 209 or IS 13229. <Cite refs={["turn908893view0"]}/>

8. Is an in-house laboratory required?

The current Product Manual's inspection and testing plan states that the manufacturer must maintain a suitably equipped and staffed laboratory for the specified factory tests. Subcontract testing is permitted only where allowed under the applicable provisions. <Cite refs={["turn908893view0"]}/>

9. Can Qualitance India assist with BIS certification?

Yes. Qualitance India can assist manufacturers with product-scope assessment, application documentation, testing coordination, quality-control review and factory inspection preparation.

Official References

1. BIS Product Manual for IS 277:2018: Galvanized Steel Strips and Sheets – Plain and Corrugated
2. BIS Standard Details for IS 277:2003: Official BIS Standards Portal
3. BIS Laboratory Information Management System: IS 277 Testing Laboratories and Scope
4. BIS Scheme-I Product Listing: Products Under Compulsory Certification
5. BIS Know Your Standard: Official Standards and Certification Information

Always confirm the latest standard edition, Quality Control Order, amendments and applicable BIS certification requirements before filing an application.

Conclusion

Galvanized steel sheets and strips are important products for construction, roofing, industrial fabrication and other applications requiring corrosion protection. Certification preparation involves confirming the correct edition of IS 277, defining the product scope, maintaining raw-material traceability, controlling zinc coating quality and demonstrating conformity through appropriate testing and records. Because IS 277:2003 has been withdrawn and the current Product Manual refers to IS 277:2018, manufacturers should verify the current certification route before starting a new application. Qualitance India supports manufacturers seeking BIS certification for galvanized steel sheets, plain sheets, strips, coils and corrugated sheets through documentation support, product-scope planning, testing coordination and factory inspection preparation. Qualitance India – Improving Quality & Competence Call/WhatsApp: +91 9310615170 Email: info@qualitanceindia.com Website: https://qualitanceindia.com