... 630mm 2.WT 0.89-24mm 3.Dup Astm A790 Duplex Seamless Stainless Steel Tube/Pipe/Pipes UNS 31803/S32750 1) Grade: ... 825Special MetarialCustom produced per your requirements.SpecificationASTM/ASME A312, A269, A213, A511, A789, A790ASTM SB163, SB165, SB167, SB407, SB423, ... NK, KR, CCS. Stainless steel tube: Features:STANDARDS: AISI,ASTM,DIN,JIS,GB,GOST,ENGRADE :201,301,304/TP304/304L,321/F321,TP316L/316L ...