... 5.offer sample Carbon steel A420 WPL6 ThreadoletPrdoucts Name:Weldolet,threadolet,sockolet,union,plug,coupling,cap,elbow,tee,reducer,cross,bushing,nipple, ... design available according to requirement(2) anti -corrosion and high-temperature resistant with black painting(3) All the production process ... manufacturing experience) Tel: 86-371-60953359Skype htpipeamy Carbon steel A420 WPL6 Threadolet