... Stainless Steel Tube/Pipe/Pipes UNS 31803/S32750 1) Grade: TP304/TP304L/TP316L/TP321/201/202 ,SS904L,S32750,2205,Duplex ,Titanium,Titanium alloy ... and others . 2) Standards: ASTM A312/A269/A213/SAE 789/ SAE 7903) O ... , LR,GL,ABS, NK, KR, CCS. Stainless steel tube: Features:STANDARDS: AISI,ASTM,DIN,JIS,GB,GOST,ENGRADE :201,301,304/TP304 ...