BIS CERTIFICATION FOR COLD ROLLED CARBON STEEL STRIPS
IS 4397:1999

This standard specifies the requirements for deep drawing cold-rolled carbon steel strips used to make cages/retainers for ball and roller bearings. This strip shall be supplied only in the skin-rolled temper, non-scalloping, and suitable for blanking, deep drawing, and piercing.

Strips are classified into the following grades:

• DD: Deep drawing quality
• EDD: Extra deep drawing quality

Steel shall be produced using an open hearth, an electric basic oxygen process, or a combination of these processes. If any other process is used in manufacturing, the purchaser must be consulted first. Steel must be fully killed. EDD grade, on the other hand, must be supplied only in fully aluminium killed or fully stabilized form using micro alloying elements such as Nb, V, Ti, and B. The finished strip must have a clean, bright, and smooth surface and be free of harmful defects such as laps, seams, lamination scales, rust, blisters, pitting, discoloration, cracked edges, etc. IS 8910 specifies the general requirements for the supply of cold-rolled carbon steel strips.

TESTS

Tests shall be carried out in accordance with the specified standard.

• Chemical composition
• Freedom from defects
• Bend test
• Hardness test
• Cupping test

Packing and marking:

Packing and Marking shall be done as per IS 4397:1999. The mode of packing and method of rust prevention during transit must be agreed upon by the purchaser and the manufacturer. Every package of strips must bear the manufacturer's name or trade-mark, as well as the cast number, size, and mass.

Manufacturers must obtain a BIS license from the Bureau of Indian Standards to use a standard mark (ISI Mark). The Bureau grants a license based on a successful assessment of manufacturing infrastructure, production process, quality control and testing capabilities during a visit to its manufacturing premises.

NOTE:

For Detailed Information about the Procedure for BIS ISI Certification

Conclusion:

If a product falls under the scope of the BIS Conformity Assessment Scheme, All the manufacturers, importers, and foreign entities must obtain BIS ISI Certification. The Bureau may cancel the License if the product fails to meet certification requirements.

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