Stainless Steel Seamless Pipes is a hollow steel bar, a large number of pipes used for conveying fluids, such as oil, gas, water, gas, steam,heat exchanger,mechinical machine. In addition, engaging in bending, torsional strength of the same, lighter, and they are also widely used in the manufacture of mechanical parts and engineering structures. Also used in producing all kinds of conventional weapons, the barrel, artillery shells and so on. Grade(UNS): 304/304L/304H(1.4301/1.4306/1.4948);316/316L(1.4401/1.4404);316Ti(1.4571);321(1.4541);309S(1.4833);310S(1.4845); 317L(1.4438);321H(1.4878);347H(1.4550);2205(1.4462) ;S31803,2507 Outside Dia: OD0.5-550mm Wall Thickness: WT0.05-80mm Standards(Norm): EN 10216-5;DIN 17456;DIN 17458 GB/T14975;T14976;T13296;GB5310; ASTM A213;A269;A312;A511;A789;A790; JIS G3459;G3463; GOST 9940;GOST 9941;