Welded flange production levels and the technical requirements should be consistent with the corresponding requirements JB4726-4728, according to certain standards for the production and processing of Hebei cheap sale 20 # flange to ensure the production and processing of products meet national quality standards. 1 0.25MP-1.0MPa, PN is carbon steel, austenitic stainless steel welded flange allows the use of grade Ⅰ forgings. 2 In addition to these provisions, as 1.6MPa-6.3MPa, PN welded flange should conform Ⅱ Ⅱ grade or above grade level requirements forgings. Welded flange connection: 20 # flange flange nuts, bolts connection. Welding flange distortion, sealed, widely Hebei 20 # flange manufacturers, mainly used in pressure or temperature fluctuations pipeline or high temperatures, high pressure and low temperature piping flanges 20 # mounds production base, the advantages the price is cheaper, does not exceed the nominal pressure 2.5MPa; are also used to transport expensive pipeline flammable, explosive medium, nominal in PN16MPa around. By the chemical industry standard points: integral flange (IF), threaded flange (Th), plate flat welding flange (PL), weld neck flange (WN), with a neck flat welding flange (SO), Cheng Plug welding flange (SW), butt ring loose flange (PJ / SE), flat welding ring loose flange (PJ / RJ), lining cover flange (BL (S)), flange cover (BL ). 2, according to the petrochemical industry standard score: threaded flange (PT), welded flange (WN), flat welding flange (SO), socket welding flange (SW), loose flange (LJ), flange Cover (not table note). 3, according to the industry standard of machinery: Overall flanges, welded flanges, welded flange plate, butt Loose plate flange, flat plate welding ring loose flange, plate flange ring loose flange, flange cover. 20 # flange _ Hebei Cathay shelf _20 # mounds production base flange provided by Hebei Cathay. Cathay Pacific Pipeline Equipment Co., Ltd. Hebei (www.hbgtgd.com) in the elbows, flanges, tees, reducers, crosses, the socket, forgings, threaded pipe fittings and other products and other industries have a higher visibility, integrity management, both quality service, welcome to inquire, or consult our "Business League call" it!