Stainless Steel Tube ASTMA312M, ASTMA269, ASTMA213, Materials:TP304,TP304L,TP316,TP316L,TP321 Stainless Steel Seamless Pipe1) Outside Diameter: 6 - 356mm 2) Thickness: 0. ... , boiler heat exchangers, natural gas industry, pharmaceutics, water transfer, environmental . Stainless Tube