... producing saw pipes, oil pipes, ERW pipes, seamless steel pipes,elbow,reducer,tee,caps,flange,tube etc.. TYPES: elbows, seamless ... ,tee,caps,flange,tube etc...1. Butt weld Elbow 45degree & 90degree Long Radius &Short Radius2. Butt weld Straight Tees & Reducing Tees ... socket weld , threaded, lap joint, blind, spectacle, orifice, ring and long welding neck flanges.SIZE: 1/2 inch-72 inchWALL THICKNESS ...