Large flat welding flange | Hebei Guotai | mounds serves a large flat welding flange provided by Hebei Cathay. Large flat welding flange | Hebei Guotai | Hebei production of large welded flange Cathay Pacific Pipeline Equipment Co., Ltd. Hebei (www.hbgtgd.com) 2014 been newly upgraded launched as iron welded flanges, many customers doubt Quality is better than iron are forged welded flanges welded flanges. In fact, the quality of iron welded flange weld quality and forged flange is the same, but in the end where the flange welded iron can not secure it, that is the most iron welded flange material not protected, because Usually the process, the density of iron weld flange is no problem, but during the production process, iron welded flange blank rarely detected, it is, produced after the iron welded flange material can not guarantee that the two forged flanged pipes, fittings or equipment supply large mounds welded flange, each mounted on a first flange, between two flanges Cangzhou sell large welded flange, with flange pad, fastened together with bolts welded flange Hebei large manufacturers to complete the connection. Some fittings and equipment have been built flange, also belongs to the flange connection. Forged flange connection is an important connection pipeline construction. Forged flanges and easy to use, able to withstand greater pressure. In industrial pipe, forged flange connection using a very wide range. In the family of large welded flange, pipe diameter is small, but low pressure, invisible flange stamping elbow connection. If a boiler room or a production site, everywhere flanged pipes and equipment. Chromium content of 0.1% to 0.5% (forged flange generally free of chromium), the carbon content of 1.0% or less and high temperature forging manufacturing forged flanges, forged flanges some surface hardness (HRC) although You can reach ≥ 56 or more (hardenability layer is only about 15 mm), forged flange material because of its poor hardenability hardness of heart to only 30 degrees, under normal circumstances, forged flanges often treated by water quenching.