1) Steel grade: ST37-2, S235JR,Q235A/B, Q345B, Q390B, SS400 2) ... 2.0-16mm 3) Standard: GB/T13793-1 ERW Steel pipe Detailed Product Description 1) Steel grade: ST37-2, S235JR,Q235A/B, Q345B, Q390B ... according to clients' requestPacking: Hexagonal shape bundles wrapped with strong steel trip or according to customers'requests1)Mainly used for general ...