BIS-ISI for Steel Tubes, Tubulars, and Wrought Fittings
Product Steel Tubes, Tubulars and Other Wrought Steel Fittings: Steel Tubes Certification Body Bureau of Indian Standards Indian Standard IS 1239:2004(Part1) Scope This standard covers the requirements for welded and seamless plain end or screwed and socketed steel tubes intended for use for water, non-hazardous gas, air and steam.