... , 2205, 2507, 904L 2) OD: 6mm-830mm WT: 1mm-40mm Stainless Steel Seamless Pipe1) Grade: 304/L/H, 316/L/H, 321 ... 310S, 2205, 2507, 904L, etc.2) Standard: ASTM A312, ASTM A213, ASTM A269, ASTM A5113) Size: OD: 6mm-830mm ( NPS: 1 ... : The products are widely used in fertilizer, petroleum, central-station, boiler, power station, shipping military, chemical industry, environment protection, traffic, ...