... ,carbon Standard:ASME,BS,GOST,etc API,ISO,CE,etc pipe fittingsSize -- Seamless:from 1/2" to 24" ,Welded:from 24 ... as customer requirements)Angle -- 22.5 deg, 30deg,45 deg,90 deg,180 deg, 1.0D, 1.5D, 2.0D, 2 ... , construction, etcSpecial design available as the requirement of customer] seamless pipe fittings SCH40