... degree elbow 1, Products: 90 Deg. LR Elbow, 90 Deg. SR Elbows, 180 Deg. LR Elbow, 180 Deg. SR Elbow, 45 Deg. LR Elbow, 45 Deg. SR Elbow ... and inspection systems, mainly manufacture elbow, tee, reducer, cap, flange, cross, nipple, socket fitting, expansion joint and other series ... are qualified and permitted to produce pressure pipeline unit for oil, chemical industry, and electricity group. Meanwhile, ...