Shijiazhuang flat welding ring loose flange ANSI B16.5 flat welding ring loose flange (Contact: Feng Hongmei Contact: 15932713817, E-mail: 1763757819@qq.com Website: http://www.czhypipe.com /) Cangzhou Hongyuan Pipe Co., Ltd. is the sales of a steel and pipe fittings as one large integrated enterprise. The company is located in the pipeline equipment industry Creator - Hebei Yanshan. East of Huanghua Bohai Sea, north of Beijing and Tianjin, superior environment and convenient transportation. The company mainly engaged in a variety of pipe materials: 304,304 L, 316,316 L, 321,310 S ,18-8, 16Mn, 20 #, 20G, 12Cr1MoVG, P91, 10CrMo910 15CrMo butt welding ring loose flange ships in order to save the material, its structure is divided into two parts, a part of the head of the tube and pipe connected, one made of a welded ring. Flange using a low-grade material, while the part of the use of the tube and pipe of the same material, to achieve the purpose of saving material.