Steel for electrically welded round link chains is a type of metal material used to manufacture strong chains that are commonly used for lifting, securing loads, and industrial applications. These chains are widely used in construction, transportation, and heavy-duty operations where strength and durability are important. The steel must be tough, reliable, and capable of handling heavy loads without breaking.
BIS certification ensures that the product must meet the required quality and performance standards as per IS 6967:1973 set by the Bureau of Indian Standards (BIS).
what is is 6967:1973 ?
This is the Indian Standard for steel used in electrically welded round link chains. This standard is set by the Bureau of Indian Standards (BIS) to ensure all requirements are properly met and the steel is :
- Strong enough to handle heavy loads safely
- Tough and durable for continuous industrial use
- Resistant to wear and mechanical stress
- Reliable for use in lifting and load-bearing applications
- Made with proper chemical composition and quality finish
Testing and inspection requirements for welded round link chains
To ensure proper strength, durability, and safety of steel used for electrically welded round link chains, the standard defined by the Bureau of Indian Standards (BIS) specifies clear testing and inspection requirements during manufacturing.
What are R and S?
- R (Required): Test must be done in the manufacturer’s own lab
- S (Subcontracting Allowed): Test can be done in an external BIS-approved lab
Material Quality Tests
- Chemical Composition Test (S) – Ensures correct steel composition for strength and durability
- Tensile Strength Test (R) – Checks the load-bearing capacity of the steel
- Yield Strength Test (R) – Ensures the steel can handle stress without permanent deformation
Mechanical Performance Tests
- Elongation Test (R) – Checks flexibility and ability to stretch without breaking
- Bend Test (R) – Ensures steel can withstand bending during chain formation
- Impact Test (S) – Verifies resistance to sudden shocks and loads
Chain Performance Tests
- Proof Load Test (R) – Ensures the chain can handle specified working loads safely
- Breaking Load Test (S) – Checks maximum load capacity before failure
- Weld Strength Test (R) – Ensures welded joints in chains are strong and reliable
Dimensional and Physical Tests
- Link Dimension Check (R) – Ensures proper size and uniformity of chain links
- Surface Finish Test (R) – Checks for defects like cracks, burrs, or rough edges
- Weight and Size Verification (R) – Ensures consistency in production
Durability and Safety Tests
- Hardness Test (R) – Ensures proper hardness for wear resistance
- Corrosion Resistance Test (S) – Ensures protection against rust and environmental damage
- Heat Treatment Verification (R) – Ensures proper treatment for strength and durability
process of bis certification
The BIS certification process ensures the product must meet the required standards for proper and efficient operation. This process is defined 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 labs to check safety, insulation,
heating performance, and electrical protection.
- 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: BIS officials inspect the manufacturing unit to verify the production process,
safety measures, and quality control system.
- Grant of BIS License: If all requirements are met, BIS grants the certification license under Scheme-I.
- Use of ISI Mark: After approval, the manufacturer can use the ISI mark on portable immersion
heaters with a CM/L number, confirming that the product meets BIS standards.
documents required for bis certification
| Basic Details | - GST Certificate
- Email ID & Contact Number
- Factory & Office Address
- Rent Agreement / Lease Deed (if applicable)
|
| Legal Documents | - Partnership Deed (if partnership firm)
|
| Manufacturing Details | - List of machinery
- Process flow chart
- Layout Plan of Factory
|
| 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
- Nature of Printing / Marking on Product
|
| Management Details | - Top Management Details
- Concerned Person for BIS Communication
|
| 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
|
Marking Requirements & License Validity
Marking Requirements
When a manufacturer obtains the BIS License, the ISI Mark for steel link chains must be
applied clearly and permanently on the product or its packaging. In addition to the ISI
Mark, other important details must also be provided on the product or packaging, as
specified in the table below ,this ensures product meets to all quality and safety
standard.
| Requirement | Details |
|---|
| ISI Mark | Indicates that the product is BIS certified and follows to the standard |
| Standard Number | IS 5082:1998 |
| CML Number | Certification Marks Licence (CML) number issued by BIS |
| Manufacturer Details | Name of manufacturer or registered trademark |
| Size Details | Diameter, gauge, or dimensional specifications of product |
| Alloy Information | Grade or designation of aluminium alloy used |
| 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 of BIS Licence for Aluminium Electrical Products
After obtaining BIS Certification for the product, the license is valid for a fixed period and must be maintained by following BIS rules and standards.
| Particulars | Details |
|---|
| Initial 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 |
| Surveillance | 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 |
cOST AND TIMELINE OF CERTIFICATION
The cost of BIS certification includes charges for application, inspection, license, testing, and marking. These fees are paid to BIS as per Scheme I guidelines.
cost breakdown
| No. | Major Charges | Particulars | Amount | Remark |
| 1 | BIS Fees | Application Fee | INR 1,000 | — |
|
| Audit / Inspection Fee | INR 7,000 | — |
|
| License Fee | INR 1,000 | — |
|
| Marking Fee | Depends on product | Discount as per MSME |
| 2. | Testing Charges | Sample Testing Fee | As Applicable | Payable to a BIS-approved laboratory. |
| 3. | EVTL India Service Fee | Consultancy & Support | As per actual | Depends on product type and factory location. |
Foreign Manufacturers
| No. | Major Charges | Particulars | Amount | Remark |
| 1. | BIS Fees | Application Fee | USD 15 | Payable via SWIFT to BIS. SAARC countries can pay INR with 18% GST. |
|
| Audit Charges | USD 3,200 – 5,900 | Depend on Country |
|
| License Fee | USD 15 | — |
|
| Marking Fee | Depends on product | — |
| 2. | Testing Charges | Sample Testing Fee | As Applicable | Payable to a BIS-approved laboratory. |
| 3. | EVTL India Service Fee | Consultancy & Support | As per actual
| Based on product and manufacturing location. |
to know the process in detail, please visit:
Under BIS Registration Products ISI and CRS
conclusion
BIS certification for steel for electrically welded round link chains as per IS 6967:1973
ensures that the product meets the required quality and performance standards for safe
and reliable use in lifting and load-bearing applications. It also ensures that the steel is
properly tested for strength, durability, weld quality, and load capacity, making it suitable
for industrial use and reducing the risk of failure.
With the support of an experienced BIS consultant like EVTL India, manufacturers can
complete the certification process smoothly, avoid errors, and get timely approval for
their products.
