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 rolledStandard GB/T8162,GB/T8163,GB/T3094, ASTM A 500, ASTM A 501, ASTM A 519, JIS G3441, JIS G3444, ASTM A 53, DIN1629 and otherwiseMaterialCarbon Steel of 20#, Q235,35#,45# ,16Mn, A53 GR.B,A106 Gr.B, ST45, ...