Steel pipe 1) Sizes: 1/8 to 24 inches 2) Standards: GB/T8163, ASTM A53, ASTM A106, JISG3452, JISG3454, DIN1629, API5L 1) ... to 24 inches 2) Standards: GB/T8163, ASTM A53, ASTM A106, JISG3452, JISG3454, DIN1629, API5L 3) Surface: Oiled or black ... on two ends of every pipe Outer packing: Hexagonal shape bundles wrapped with strong steel trip or according to customers' Requests carbon steel seamless pipe