标准号:IS 2039 Pt.1-1991
发布日期:1991/6/1 12:00:00
实施日期:1999/12/31 12:00:00
适用范围:This Indian Standard provides for steel tubes for cycle and cycle rickshaw purposes in sizes up to and including 44.5 mm in outside diameter and covers the following types of tubes:Type of Steel Tube ReferenceTubes DesignationElectric resistance ERW Part IIwelded and induction welded tubesCold finished electric CEW Part IIIresistance welded and induction welded tubes