... pipes, oil pipes, ERW pipes, seamless steel pipes,elbow,reducer,tee,caps,flange,tube etc.. TYPES: elbows, ... seamless and welded ,L/R, S/R, 45deg,90deg,MATERIAL : carbon steel,alloy steel,stainless steel, A234 WPB ... pipes, ERW pipes, seamless steel pipes,elbow,reducer,tee,caps,flange,tube etc...1. Butt ... weld Elbow 45degree & 90degree Long Radius &Short Radius2. Butt ...