GB/T3091,GB/T9711 API5L 5CT, ASTM ,德标DIN,日标JIS,英标BS,欧盟、SY/T5037 材质:Q195-Q345A,B,L175-L485,x42-X70,J55,规格:ERW直缝钢管φ114.3mm- φ457.2mm SSAW螺旋钢管ф219mm-ф3000mm 壁厚:2.7mm-15.75mm ,螺旋钢管最大壁厚25mm