square seamless steel pipe 1.Cold drawn 2.different shapes, high quality 3 Material: carbon steel& alloy steel Products DetailesName square seamless steel pipeTechiqueCold Drawn/cold ... , A53 GR.B,A106 Gr.B, ST45, CK45Alloy steel of 20Cr, 40Cr, 20CrMnTi, 20CrMo, 42CrMo,40MnMoV, ... to prevent rustInner PackingCaps at both ends, steel strong trips on every bundleOuter PackingPE Wrapping outsideMin ...