... GB 5310-1995, GB 3087-1999, ASTM A213-2001, ASTM A335-2006Grade:Cr-Mo alloy, A53-A369Grade:12Cr1MoV, 12Cr1MoVG, 15CrMoG, ... 2.Standard: ASTMA213,A333,A335,JIS G3458Alloy Pipe ASTM A335 P91:1) Standard:ASTM A213, A333, A335, ASME SA213, SA333, SA335;JIS G3458,G3462,DIN17175, ... DIN16292) Spec.:O.D.: 6mm-820mmW.T: 0.5mm-70mm3) Material:Cr5Mo (STFA25 STPA25 STBA25 T5 P5 ...