Hot-rolled steel strips are used in the manufacturing of welded tubes and pipes. This type of steel strip is fabricated using the rolling technique at high temperatures. Hot-rolled steel strips are favorable because of their high strength and durability in resisting mechanical stresses during the manufacturing process. Besides, hot-rolled steel strips enhance the efficient manufacture of tubes and pipes.
It is necessary to adhere to the BIS certification standards to ensure the steel strip satisfies the expected quality. The criteria for assessing the quality of steel strips have been laid down in IS 10748:2025, where chemical composition, tensile properties and other factors have been taken into account. Furthermore, the certification process involves inspecting and verifying the product to determine its compliance with the established technical specifications.
What is IS 10748: 2025?
This is the Indian Standard for hot-rolled steel sheets used in the manufacturing of welded pipes. It mentions the mechanical properties and dimensions to ensure reliable operation of the tubes. As per the BIS (Bureau of Indian Standards), these steel products are:
- Tested for tensile strength
- Checked for dimensional accuracy
- Assessed for bend performance
- Verified for surface quality
Eligibility Criteria for Welded Tube BIS Approval
BIS authorisation under IS 10748: 2025 is required for businesses involved in manufacturing, importing, or supplying Hot-rolled steel strip in India.
Applicable to:
- Manufacturers (India) - Must get BIS approval if the steel strips are covered under QCO.
- Foreign Manufacturers - Need certification to export the product to India.
- Importers/Brand Owners - Must ensure that the products are BIS-certified before sale.
- Sellers/Distributors - Should only sell certified steel products.
Testing and Inspection Requirements
To ensure reliable performance of hot-rolled steel strips used for welded tubes and pipes, the Bureau of Indian Standards outlines the minimum requirements under IS 10748: 2025. This certification ensures that manufacturers meet the quality requirements for steel products. The BIS testing parameters and quality checks for the rolled steel plates are listed below:
| Test Group | What is Tested | Purpose |
|---|
| Chemical Composition Tests | Carbon, silicon, manganese, phosphorus, sulphur and other alloying elements | Ensures material meets required chemical standards for strength and weldability |
| Tensile Strength Tests | Yield strength, tensile strength, and elongation properties | Ensures mechanical strength and load-bearing capability of steel |
| Bend Tests | Ability of steel plate/sheet/strip to withstand bending without cracking | Ensures ductility and suitability for forming and fabrication |
| Dimensional & Tolerance Tests | Width, thickness, length, and permissible tolerances | Ensures product conforms to specified dimensions and uniformity |
| Surface Quality & Defect Tests | Freedom from surface defects like cracks, laminations, and flaws | Ensures material is suitable for further processing and end use |
| Condition of Delivery Tests | Supply condition such as as-rolled, normalized, or thermomechanical rolling | Ensures correct processing condition as per buyer requirement |
| Coil Characteristics Tests | Telescopicity, edge condition, and coil shape uniformity | Ensures proper coil handling, storage, and processing performance |
How to apply for Steel Sheet for Welded Pipe BIS Approval?
The BIS Authorisation process ensures that the steel plates meet the required standards for proper and efficient operation. This process is set by the Bureau of Indian Standards (BIS) and includes the following steps:
- Online Registration : Manufacturers register on the BIS Manak portal by submitting company, factory, and product details. Foreign manufacturers must appoint an Authorized Indian Representative (AIR).
- Testing at BIS-Approved Laboratory: Product samples are tested in BIS-approved laboratories for bend performance, dimensions, tolerances, and surface quality.
- Application Submission : The application is submitted along with test reports, technical documents, and factory details. Foreign manufacturers must also submit AIR-related documents.
- Factory Inspection: The Bureau of Indian Standards officials inspect the manufacturing units to verify the production process, safety measures, and quality control system.
- Grant of BIS License: Upon successful verification of all requirements, BIS grants the certification license under Scheme-I.
- Use of ISI Mark : Once approved, the manufacturer can use the ISI mark on the product with a CM/L number, confirming that the product meets BIS standards.
List of Documents for IS 10748: 2025 Approval
| Document Category | Documents Required |
|---|
| Basic Details | GST Certificate, Email ID & Contact Number, Factory & Office Address, Rent Agreement / Lease Deed (if applicable),Partnership Deed (if applicable for partnership firms) |
| Manufacturing Details | List of Machinery, Process Flow Chart, Factory Layout Plan |
| Raw Material Details | List of Raw Materials, Supplier Details, Raw Material Invoices, Raw Material Test Certificates |
| Testing & Quality Control | List of Testing Equipment, Calibration Certificates, QC/Lab In-charge Appointment Letter & Qualification |
| Production Details | Annual Installed Capacity, Last Year Production Value |
| Product & Packaging Details | Quantity per Package, Nature of Packing, Product Printing / Marking Details |
| Management Details | Top Management Details, BIS Communication Contact Person |
| Brand & Certification Documents | Trademark / Brand Certificate, Consent Letter from BIS Recognized Laboratory |
| Additional Documents | Weekly Off Details, Hygiene Document (if applicable), Relaxation Letter (if applicable), Any Other Relevant Document |
| Foreign Manufacturer Requirement | Appointment of Authorized Indian Representative (AIR) for BIS coordination and compliance in India |
The Foreign manufacturers are required to appoint an Authorized Indian Representative (AIR) in India. The representative is the local point of contact for the Bureau of Indian Standards (BIS) and takes care of all rules and compliance work in India.
Marking Requirements & License Validity
Marking Requirements
Once a manufacturer obtains BIS approval, the ISI Mark for Hot-rolled steel sheets must be clearly and permanently marked on its packaging or on the product. Along with the ISI Mark, important details such as the manufacturer’s identification and licence number (CM/L) must be marked. This ensures the product complies with all performance standards. Further details are mentioned below:
| Requirement | Details |
|---|
| ISI Mark | Indicates that the product is BIS certified and conforms to standards |
| Standard Number | IS 10748: 2025 |
| CML Number | Certification Marks License (CML) number issued by BIS |
| Manufacturer Details | Name of manufacturer or registered trademark |
| Batch / Date | Batch number, heat number, or manufacturing date for traceability |
Note: Marking is typically applied using durable stamping, tagging, or permanent printing to ensure clear identification during handling, storage, and transportation, as per BIS marking requirements.
Validity for Hot-Rolled Steel Sheets BIS License
| particulars | Details |
|---|
| Validity | Typically 1 to 2 years, depending on BIS approval conditions |
| Renewal | Must be renewed before expiry by submitting the application along with the prescribed fee and updated documents |
| Surveillane | Includes periodic factory inspections and market sample testing conducted by BIS |
| Compliance | Continuous following to standard and applicable Quality Control Orders (QCOs) is mandatory |
| Risk | Non-compliance or failed sample testing may lead to suspension or cancellation of the BIS license |
Fee Structure for Hot-Rolled Steel Products
The cost of BIS Approval for a steel strip includes charges for application, inspection, license, testing, and marking. These fees are paid to BIS as per Scheme I guidelines.
| Charge Type | Indian Manufacturers | Foreign Manufacturers |
|---|
| Application Fee | INR 1,000 | USD 15 |
| Audit Charges | INR 7,000 | USD 3,200 – 5,900 |
| License Fee | INR 1,000 | USD 15 |
| Marking Fee | As applicable | As applicable |
| Testing Charges | As applicable | As applicable |
| EVTL India Consultancy Fee | As per actual | As per actual |
Note:
- Application fee for foreign manufacturers is payable via SWIFT (SAARC countries may pay in INR with applicable GST).
- Audit charges for foreign manufacturers vary based on country/location.
- The marking fee is determined based on the product category and production volume (MSME benefits may apply).
- Testing charges are to be paid directly to BIS-recognised laboratories.
- Consultancy fees can vary depending on product type and factory location.
Conclusion
The efficiency of the tubes and pipes that have been welded depends mainly on the quality of the strips of steel being utilized. The compliance with the standards of IS 10748: 2025 ensures the tensile strength and toughness of the hot-rolled steel strip. The problems of weldability and surface finish are unlikely to arise from such material. Completing BIS certification involves multiple technical stages that require proper planning and documentation. The company EVTL India provides assistance in the application process and testing of products for compliance. This ensures easy and hassle-free certification.
