... of Cap:Production NameASTM A234 WPB Carbon Steel Cap,pipe fitting large diameter ,ansi b16.9 bw Size13.7mm-1219.2mm ( ... Bend,Stubtube,Weldolet/Threadolet/Olet,Nipple,Reducing Socket Insert,Union,Pipe ClampInspection Factory in-house or Third Party inpectionApplicationPetroleum industry, ... shipbuilding,onshore platform ASTM A234 WPB Carbon Steel Cap,pipe fitting large diameter ,ansi b16.9 bw