... pushing, stamping, extrusion etc. According to the different shapes use/purpose can be divided into: the groove elbow, card ... tooth bend, stamping elbow inside andoutside screw, pushing elbow, socket elbow ,butt weld elbow,inside screw elbow. Our elbow ... mainly manufacture elbow, tee, reducer, cap, flange, cross, nipple, socket fitting, expansion joint and other series products. elbow:are widely ...