... diameter21.3-762mmWall thickness2.5-60mmStandardASME SA213,ASME SA210,ASTM A335,ASTM A333,DIN17175,GB/T9163,GB/T8162,GB/T3087, ... pressure boiler, high pressure fluid, oil refining mechanical property Standard GradeTensile strength(MPa) Yield strength(MPa) Elongation rate (%)HardnessGB308710335 ... , bicycle frames and construction used in steel scaffolding ASTM A519 Seamless Alloy Fluid Steel Pipe