ERW Welded Steel Tubes BS6323-5 for mechanical purpose

ERW Welded Steel Tubes BS6323-5 for mechanical purpose Cold Drawn Welded Tubes Standard: BS6323-5 Seamless and Welded steel tubes for Automobile,Mechanical and General Engineering Purposes  Part 5: Specific requirements for electric resistance welded (including induction) steel tubes Steel Grade: ERW1 ERW2 ERW3 ERW4 ERW5 Applications: for Auto Industry / for Machinery Use/Mechanical and General Engineering Purposes  Size range: O.D.:6-350mm W.T.:1-30mm L:max12000mm Diameter Tolerance 1 2 3 over Up to and including KM condition D/a GKM, GZF,NKM, NZF condition 20<D/a≤40 　 ≤40 GKM,GZF, NKM, NZF condition≤20 mm mm mm…