1.O.D.:seamless1"-24",welding 1"-80" 2.Type:seamless and welding 3.Material:carbon steel, stainless steel and alloy. Elbow:Our factory belong to the Haihao group,which is the pipe fittings and flanges manufacturers group.Cangzhou Huadian high pressure pipe fittings Co., Ltd and Cangzhou Huadian Container Fittings Co., Ltd are the two biggest manufacturers in the group. We mainly produce pipe ...