... the bend, flange elbow, reducer elbow, tooth bend, stamping elbow inside andoutside screw, pushing elbow, socket elbow ,butt weld elbow,inside screw elbow. Our elbow through ISO 9001 ... , JIS Wall thickness: 2mm to 150mm, sch10, shc20, std sch40, sch 80, sch160, schxxs Coating:black paint,hot galvanized,cold galvanized ...