... , 904L 2) OD: 6mm-830mm WT: 1mm-40mm Seamless Stainless Steel Pipe 1) Grade: 304, 316L, 321H, 317L, 347H, 310S, 2205 ... , 2507, 904L 2) OD: 6mm-830mm WT: 1mm-40mmStainless Steel Seamless Pipe1) Grade: 304/L/H, 316/L/H, 321 ... used in fertilizer, petroleum, central-station, boiler, power station, shipping military, chemical industry, environment protection, traffic, metallurgy and mine, printing and ...