BIS issued the date of withdrawal of Indian

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Commercial Compliance The Bureau of Indian Standards, on January 19, 2026, issued the date of withdrawal of Indian Standards related to pipes.

The following IS have been withdrawn on January 16, 2026:

• IS 5433 – 1969 Specification for Oil Well Steel Casing Pipes and Couplings

• IS 6647 – 1972 Specification for Drill Pipes for Use in Oil or Natural Gas Wells

• IS 9443 – 1980 Guidelines for Marking Purity of Silver on Silver Articles/Ornaments

[Notification No. HQ-PUB017/1/2020-PUB-BIS (1409)]

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BIS issued the date of withdrawal of Indian Standards related to Pipes