API 5L Carbon steel welded pipe ERW 1.steel grade: Q195-Q345 2.OD:20mm- ... ,JIS,GB 4.best price API 5L Carbon steel welded pipe ERWMaterial:Q195,Q215,Q235,Q345 Size: OD16-1420mm ,thickness ... Straight and reducing tee.6)Plate and butt welded steel pipe flange. Material:10#,20#,45#,A106,A53,Q195,Q215, ... ,JIS,GB/T Outer diameter:DN10-920(2inch-40inch) Wall thickness:2-65mm Use:They are extensively used in oil ...