Cangzhou Bohai Pipe Fittings Co., GB 20 # flange weld neck flange Loose ring Flange Loose ring with butt weld neck flange Loose ring flange plate flat welding ring Loose plate flange plate turned loose flange locking device after another in order to meet the needs of the marine 20 # flanges, with shank with holes, these holes can be loosened when the bolt is not subject to vibration. Some of the flange bolts threaded rod not 20 # flange welded to be meticulous, called thin rod bolt flange. This flange bolts in favor of change by force coupling. There are special high strength bolts on steel. head will become bigger and more. size also varies galvanized steel bar is molten matrix metal and iron alloy layer produced by the reaction. Flange Standard: HG20592-2009 (PN series) \ HG20615-2009 (Calss series) Cangzhou Bohai Tube Co. specializes in manufacturing large flange # 20 large flange is a disk-shaped parts, the most common projects in the pipeline, flanges are used in pairs. In the pipeline project, mainly used to connect pipe flanges in the pipeline need to be connected, and a variety of mounting flange, low-pressure pipe flange connection can use silk, using more than 4 kg pressure welding flanges plus seal point between the two flange, then bolted. differential pressure flanges have different thickness and use different bolts pumps and valves and pipe connections when these facilities and equipment local, also made of the corresponding flange shape, also known as the flange connection. All in two planes surrounding the use of bolted connections simultaneously closed flat welding parts 20 # flanges, generally known as the "flange" such as ventilation pipe connections, this type of parts can be called "flange parts." belt diameter flat welding flange 20 #, 20 # flanges, Cangzhou Bohai Ltd provided by Cangzhou Bohai fittings. Cangzhou Bohai Pipe Fittings Co., Ltd. (www.czbh628.com) (www.hbbh628.com) strong, credible, and other industries in Hebei Cangzhou tee accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Cangzhou Bohai and you hand into the brilliant, for a better future!