Seamless Steel Pipe Standard: ASTM, API 5L, DIN Steel Grade: API 5L Gr.B, ASTM A106/A53, St37, St52, P235GH, P235TR1, P235TR2, and so on. Thickness: 1.0 to 60mm SCH20-SCH120 Length range: 2 to 13m Diameter: 10 to 762(2/5 to 30-inch) Squair/ rectangular Pipe Sizes: 15x15-400x400 mm Thickness: 1.5-12.5 mm Length: 3-13m Steel Grade: S235JR, S355JR, S235 G2H, S355G2H, ASTM A500 Gr *****