BIS CERTIFICATION FOR COLD-ROLLED MEDIUM, HIGH CARBON, AND LOW ALLOY STEEL STRIP IS 7226:1974

INTRODUCTION

Cold-rolled medium, high carbon and low alloy steel strips are special types of steel made in a specific way to make them better for certain uses. Cold rolling means the steel is passed through rollers at low temperatures, making it smoother and more accurate in size.

Medium carbon steel strips have a medium amount of carbon, making them good for things that need a balance of strength and flexibility, like car parts and machinery. High carbon steel strips have a lot of carbon, making them really hard and resistant to wear. They're used in tough things like cutting tools, springs, and heavy-duty equipment.

Low alloy steel strips have extra elements added, like manganese or chromium, to make them even better for certain jobs. These strips are versatile and can be used in things like buildings, pipelines, and car parts where you need a mix of strength and durability. So, these steel strips are like special versions of steel made to do specific jobs really well, depending on what's needed.

IS 7226:1974 sets the rules for making cold-rolled medium, high carbon, and low alloy steel strips. These strips are like thin, flat pieces of steel, with a thickness up to 3 mm and a width up to 330 mm. They are used in general engineering jobs.

Another standard, IS 1387:1967, outlines the basic requirements for supplying cold-rolled medium, high carbon, and low alloy steel strips. These strips must be softened or softened and rolled again before being delivered in coils (like big rolls). The steel used to make these strips must come from certain processes, and if a different process is used, the buyer needs to be asked first. For instance, if the basic oxygen process is used, the nitrogen content should not be more than 0.007 percent.

The surface of these steel strips must be smooth and without bad defects like scales, rust, blisters, or cracks. Also, the strips must have a shiny finish. So, these standards make sure that the steel strips used in different applications meet certain quality and production requirements.

MANDATORY TESTING

The following tests shall be carried out in accordance with method specified.

·       Chemical composition

·       Hardness test

·       Edge condition

·       Rolling tolerance

·       Surface finish

BIS ISI Mark Certification Costing And Timeline

CONCLUSION

Cold rolled medium, high carbon and low alloy steel strips are an integral part of the mandatory ISI Certification Scheme, as per the IS 7226:1974 standard in India. To import, export, or sell this product in the Indian consumer market, manufacturers must possess the ISI Mark.

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