... cold drawn Annealing Cold Drawn Seamless gal square steel pipe tube Specification & Commodity1. Standard: ASTM A 501, ASTM A519 ... 20#, 1020, C22, 1045, C45, 1010, CK10, Q195, Q235, Q345B, S185, S235JR, E235B......3. SizesOD: 18-120mmWT: 1.2-18mmLength ... tubeOctal seamless steel pipe / tubeDodecagon seamless steel pipe / tube......Irregular shape steel pipe / steel barHollow shaft with keywaySolid shaft ...