... L) Equipment Quality Control: Our products :carbon steel ,alloy steel ,stainless steel pipes and pipe fittingssuch as: long/short ... end cap,eccentric/concentric reducers ;sprial welded steel pipe (SSAW),seamless steel pipe (SMLS) ,and LSAW pipe! The ... Cap, Bushing, Plug, Swage Nipple, Hexagon Nipple,Nipple, Hexagon Nut, Insert, Weldolet, Elbowlet, Sockolet,Thredolet, Nipolet, Letrolet, etcPressure ...