45 degree elbow,90 degree elbow,180 degree elbow,straight/reducing tee,straight/reducing cross,stub end,cap,concentric/eccenctric reducer,butt-welding fitting,socket fitting,thread fitting,barrel/welding/hex/hex reducing/swage nipple,full/half coupling,round/hex/square plugs,hex bushing,socket/thread union,elbolet,weldolet,sockolet,thredolet,seamless/welded pipe,pipe line,WN/SO/PL/BL/SW/TH flange