Cast Iron fitting socket ( Coupling) 1.1/8''-6'' 2 BS,ANSI,DIN Thread Standard ... iron pipe fittings: elbows, tees, sockets, bends, nipples, unions, crosses, flanges, plugs, backnuts, crosses over, round caps etc. Cast Iron Pipe ... iron pipe fittings: elbows, tees, sockets, bends, nipples, unions, crosses, flanges, plugs, backnuts, crosses over, round caps etc.MaterialMalleable ironTechnicsCastingSize1/8 ...