1)Sizes (O.D. x W.T): from 13.7mm -- 323.9mm 2)Standard: DIN 1629 3)Steel Grade: st37.0, st44.0, st52.0, st55, ck45 4)Surface: oiled or black painted to prevent rust 5)Marking: as per customer's requirement Inner packing: Caps on two ends of every pipe Outer packing: Hexagonal shape bundles wrapped with strong steel trip or according to customers'requests. In bundles
