... fitting 4.T/T,L/C weld on elbow 5.API,CE,ISO Elbow fittings and pipe fittings 1. Material: carbon steel ... 312545 Duplex$super duplex stainless steel ASTM A 815 UNS S31803, UNS S32750, UNS S32760 STANDARDSANSI, ISO, JIS, DIN, BS,GB, SH, HG ... for Off-Shore Applications FORGED PIPE FITTINGS Production Nameelbow ,street elbow,boss, tee, coupling ,half coupling,cap,plug,union,hex nipple ...