1. ERW STEEL PIPE 2.GB/T19001-2000 IDT ISO9001:2008 3.Size:19-219mm ,Wall thickness:0.6mm-8.5mm 4.

1. ERW  STEEL PIPE2.GB/T19001-2000 IDT ISO9001:2000 3.API SPEC 5L ; GB/T9711.1-97;

4. thickness: 0.6-8.5mm 5.OD: 19-219mm 6.material: Q195 Q235,Q345,A53,A106,ST37,

ERW STEEL TUBES