... 321)Standard: ASTM A213/ASME SA213 2)Material: TP304,TP304L,TP316L,TP321,TP310S,TP317L 3)Size: 1/2" ~ ... 20"SCH10-SCH160S,6 ~ 610 ASTM A213 TP304L Stainless Steel Seamless Pipes 1)Standard: ASTM A213/ASME SA2132 ... )Material: TP304,TP304L,TP316L,TP321,TP310S,TP317L3)Size: 1/2" ~ 20 ... Asia, Western Europe and So on. ASTM A213 TP304L Stainless Steel Seamless Pipes