Stainless Steel Pipe 1.size: 3/8" ~ 36", 6mm--830mm ... 316, 316L 4.length:5.8M,6M,9M Stainless Steel Pipe1.size: 3/8" ~ 36", 6mm--830mm2.thickness ... 321H, 304LN4.length:5.8M,6M,9M,12M ProductStainless Steel PipeStandardASTM A312, ASTM A213, ASTM A269, ASTM A511, ... testing equipment such as ultrasonic testing machine, eddy current testing machine,Mechanics testing machine to make sure high quality.