Describes the requirements for steel tubes for use in automotives including two and three wheelers, in sizes up to and including 114.3 mm outside diameter and these are indicated in the following sections: Section 1 - General requirements; Section 2 - Cold drawn seamless steel tubes (CDS); Section 3 - Electric resistance welded/high frequency induction welded steel tubes (ERW/HFIW); and Section 4 - Cold drawn electric resistance welded/high frequency induction welded steel tubes (CEW).