... price 3.ISO,CE,ANSI certification 4.Seamless welded Socket Weld ElbowPurpose:Elbow are the pipe fitting Used in ... the bend, flange elbow, reducer elbow, tooth bend, stamping elbow inside andoutside screw, pushing elbow, socket elbow ,butt weld elbow,inside ... systems, mainly manufacture elbow, tee, reducer, cap, flange, cross, nipple, socket fitting, expansion joint and other series products. elbow: ...