Standard API | ASTM | BS | DIN | DNV | GB | ISO | JIS | KS | LR | NF | Others ASTM Standard Number A 269 (Seamless and Welded Austenitic Stainless Steel Tubing for General Service) Grade TP304 TP304L TP304LN TP316 TP316L TP316LN TP317 TP321 TP347 TP348 XM-10 XM-11 XM-15 XM-19 XM-29 TPS31254 S31725 S31726 S30600 [ All grade ]