Stainless Steel Pipe ASTMA312M, ASTMA269, ASTMA213, Materials:TP304,TP304L,TP316,TP316L,TP321 Stainless Steel Seamless Pipe1) Outside Diameter: 6 - 356mm 2) Thickness: 0.5 - ... heat exchangers,natural gas industry, pharmaceutics, water transfer, environmental . 316 Stainless Steel Pipe