BIS Certification for Specification for Steel Wire for spokes IS 6902: 1973

Steel wire for spokes is a type of metal wire used to make spokes in wheels such as bicycles, motorcycles, and other vehicles. These wires connect the hub to the rim and help in maintaining the shape, balance, and strength of the wheel. They must be strong, flexible, and durable to handle load, tension, and continuous movement without breaking.

To ensure the quality and reliability of this wire, the Bureau of Indian Standards (BIS) provides certification as per IS 6902:1973. BIS certification ensures that the steel wire meets the required standards for strength, durability, and proper finish, making it safe and suitable for use in wheel spokes.

what is is 6902:1973 ?

This is the Indian Standard for steel wire used for spokes, which are commonly used in wheels of bicycles, motorcycles, and similar vehicles. It is a standard set by the Bureau of Indian Standards to ensure that the wire is safe, reliable, and suitable for use in wheel applications.

This standard ensures that the wire is:

Strong enough to handle tension and load in wheel spokes
Flexible to withstand continuous movement without breaking
Resistant to wear and mechanical stress
Properly finished with a smooth surface to avoid defects
Durable for long-term use in different conditions
Consistent in size, quality, and manufacturing standards

testing and inspection requirements

To ensure proper strength, flexibility, and reliability of the product, 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 laboratory
S (Subcontracting Allowed): Test can be done in a BIS-approved or external laboratory

Material Quality Tests

Chemical Composition Test (R) – Ensures correct levels of carbon, manganese, sulphur, and phosphorus
Raw Material Verification (R) – Confirms input material meets required standards

Mechanical Performance Tests

Tensile Strength Test (R) – Checks the wire’s ability to handle tension without breaking
Bend Test (R) – Ensures the wire can bend without cracking during use

Coating and Surface Tests

Galvanized Coating Test (R) – Ensures proper zinc coating for corrosion resistance (if applicable)
Freedom from Defects Check (R) – Ensures wire is free from harmful defects like cracks or rough edges

Dimensional and Physical Tests

Wire Diameter Check (R) – Ensures correct size as per standard
Tolerance Verification (R) – Confirms uniformity in wire thickness
Coil Inspection (R) – Ensures consistency within each coil

process of bis certification

The BIS certification process for Specification for Steel Wire for Spokes IS 6902: 1973—involves multiple steps designed to thoroughly evaluate a product's compliance with the required standards. Here is a general overview of the certification process:

Online Registration: Manufacturers register on the BIS Manak Online Portal by submitting company details, factory information, and product specifications. Foreign manufacturers must appoint an Authorized Indian Representative (AIR) in India.
Testing at BIS-Approved Laboratory: Product samples are tested in BIS-approved laboratories to evaluate electrical safety, insulation resistance, heating efficiency, durability, and overall performance as per requirements.
Application Submission: The application is submitted along with laboratory test reports, technical documents, manufacturing process details, and factory information. Foreign manufacturers must also provide AIR-related documents.
Factory Inspection: BIS officials conduct an on-site inspection of the manufacturing unit to verify production processes, quality control systems, safety measures, and compliance with the standard.
Grant of BIS License: If all requirements are successfully met, BIS issues the certification license under Scheme-I, allowing the manufacturer to produce and sell certified products.
Use of ISI Mark: After certification approval, the manufacturer is permitted to use the ISI mark along with a CM/L number on mineral filled sheathed heating elements, confirming compliance with the standard.

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 aluminium extruded round tubes and hollow sections 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 shown 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 6902
CML Number	Certification Marks Licence (CML) number issued by BIS
Manufacturer Details	Name of manufacturer or registered trademark
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 licenses for steel spoke wires

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

BIS ISI Mark Certification Costing And Timeline

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

Indian Manufacturers

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 wire for spokes as per IS 6902:1973 ensures that the product must meet the required standards for strength, flexibility, and reliability in wheel applications. It also ensures that the wire is properly tested for tensile strength, bending performance, surface quality, and dimensional accuracy, making it suitable for safe and long-term use.

With the support and guidance of an experienced BIS consultant like EVTL India, manufacturers can complete the certification process smoothly, reduce errors, and obtain faster approval for their products.