The wire should be crafted from steel manufactured through open-hearth, duplex, electric, basic oxygen, or a combination of these processes. Each ingot must contain adequate discard to prevent piping, segregation, and other harmful defects.

The ingots, blooms, or billets must undergo rough machining, chipping, grinding, or other preparation methods to eliminate any surface imperfections that could affect the quality of the finished wire. The wire should have a circular cross-section and be devoid of surface defects, piping, and harmful segregation.

Steel wire for spoke nipples must be provided in the designated size. The material supply should meet general requirements outlined in applicable standards, and the wire must be supplied in a drawn state.

TESTS

The subsequent test must be conducted for Steel Wire for Nipples Spokes.

• Tensile test

• Bend test

• Hardness test

• Dump test

• Test for chemical requirements

MARKING

Each coil or wire should be securely bound and fastened, accompanied by a tag clearly marked with the manufacturer's name, type, and size of the wire. Optionally, ISI marks may also be affixed to the material.

To utilize the standard mark (ISI Mark), the Manufacturer is required to obtain a BIS license from the Bureau of Indian Standards. This license is granted following a thorough assessment of manufacturing infrastructure, production processes, and quality control and testing capabilities conducted during an on-site visit to the manufacturing premises.

PROCESS FOR BIS ISI MARK CERTIFICATION