... ,TP321,TP310S,TP317L 3)Size: 1/2" ~ 20"SCH10-SCH160S,6 ~ 610 ASTM A312 TP304 2 Inch Schedule 40 Stainless Steel Seamless Pipes ... SA3122)Material: TP304,TP304L,TP316L,TP321,TP310S,TP317L3)Size: 1/2" ~ 20"SCH10-SCH160S,6 ~ 610mm Product Namestainless steel seamless pipeStandardsASTM ... , Eastern Asia, Western Europe and So on. ASTM A312 TP304 2 Inch Schedule 40 Stainless Steel Seamless Pipes