mitre nonstandard elbow 1.type:long radius,short radius,welded,seamless 2.Material:carbon steel,stainless steel,alloy steel mitre elbow ... typeBW bend pipe/butt weld pipe bend;SW bend pipe/socket weld pipe bend;Threaded pipe bend/TH bend pipe;Seamless pipe bend/SMLS bend pipe;Welded pipe bend/Welded ... :DIN St37.0, St45.8, St52.4,St.35.8,API 5L GR.B, X42,ASTM A860,ASTM A694,ASTM A420 ...