標準號：IS 3074-1979
發布日期：1980/7/1 12:00:00
實施日期：1999/12/31 12:00:00
適用范圍：1.1 This standard covers the requirements for steel tubes for use in auto-motives including scooters and motorcycles, in sizes up to and including 114.3 mm outside diameter and of the following types:Type of Tube Tube Designation ReferenceCold drawn seamless steel tubes CDS Section 2Electric resistance butt-welded steel ERW Section 3tubesCold drawn electric resistance butt- CEW Section 4welded steel tubes1.2 Details of the grades of tube and materials dealt with under each type are given in subsequent clauses.1.3 All steel tubes covered by this standard shall comply with the require-ments laid down in Section 1, and in addition, with the requirements under each appropriate Section.