structure use seamless pipe, fluid transfer use seamless pipe, boiler use seamless pipe, boiler use high-pressure seamless pipe Stainless Steel Seamless Round Pipe Dimension Table No.Specification(mm)No.Specification(mm)1 ... *8-12 Main Drade:201, 201B, 201H, 301, 302, 303, 304, 304L, 304H, 309S, 309H, 310S, 316, 316L, 317, 317L, 347 ...