ASME B16.9 A234WPB 45 degree welding elbow Material:carbon steel,stainless steel and allloy ... , electric power, shipbuilding, papermaking, construction, etcOthers We can also produce kinds of elbows, tees, reducers and mechanical processing machines of elbows ... under the ISO 9001:2000 strictly. ASME B16.9 A234WPB 45 degree welding elbow