... .OD:310-813mm 2.WT:6.5-630mm 3.Material:Q235/Q345 4.MOQ:10tons Straight seam steel pipe :1.OD ... -30mm3.Standard:GB/T3091-2008,BS1387,ASTM A534.Material:Q195,Q235,Q215,Q345,20#,30#,45#5.Application:gas,oil,fluid ... at any time or visit our webside !tina wang Tianjin q235 straight seam steel pipe manufacture