... 2.WT 0.89-24mm 3.Dup Super Duplex Seamless Stainless Steel Tubes & Pipes 2205/UNS S31803 1) Grade: TP304/TP304L/TP316L/TP321 ... A790ASTM SB163, SB165, SB167, SB407, SB423, SB444EN10216-5 TC1, TC2, DIN 17456, DIN17458JIS G3459, G3463, GOST 9940, GOST 9941Quality ControlISO 9001 ... , DNV, LR,GL,ABS, NK, KR, CCS. Stainless steel tube: Features:STANDARDS: AISI,ASTM,DIN,JIS,GB,GOST,ENGRADE :201,301,304/TP304 ...