... welding 3.Material:carbon steel, stainless steel and alloy. Elbow:Our factory belong to the Haihao group,which is the ... manufacturers in the group. We mainly produce pipe fittings including elbow, Tees, cross,reducer and flanges,and use the crapes ... stainless steel and alloy. Production Name45 / 90 / 180 , Long / Short Radius Elbows, Equal / Reducing Crosses, Concentric / Eccentric Reducers, Caps, Stub ...