Hot rolled steel pipe is produced by heating a solid billet or bar and then punching it by rotating it as it rolls on rollers. Finishing then takes place in multi-pass size reduction mills. Tolerances and finish are similar to other hot finished steel products. The size and grade range is more limited than cold working due to the nature of the process involved. This tube is used where dimensional accuracy and surface finish are unimportant or secondary, or where the desired tolerances, finish and final mechanical properties are to be achieved by machining and heat treatment.

STEEL DRAWN TUBES ACCORDING TO DIN2448 NORM