... galvanized welded steel pipe: (1)Standard:AISI,ASTM,JIS,GB,BS (2)Grade:Q235 (3)Technique:cold rolled (4)Type:steel pipe Quick ... -25 days after the prepayment.Specificationshot rolled weldless steel pipe 1)10#,20#,45# 2)GB8162-1999,GB8163 ... :3-45mm 4)OD:21-800mmcold rolled weldless steel pipe1)Material:10#,20#,45#,(Q345)16Mn,12Cr1MoV ... : annealed, normalized and tempered Q235 galvanized welded steel pipe