Classification and Application of Stainless steel flange standard
Stainless steel flange specification: 1 / 2 "~80" (DN10-DN5000) stainless steel flange pressure grade: 0.25Mpa ~250Mpa (150Lb ~2500Lb) stainless steel flange common standard: GB: GB9112-88 (GB91131-88~GB912336-88) American Standard: ANSI B16.5, ANSI 16. 47 Class150,300,600,900,1500 (WN, SO, BL, TH, LJ, SW) Daily Standard: JIS 5K, 10K, 16K, 20K (PL, SO, BL): DIN2527,2543,2545,2566,2572,2573,2576,2631,2632,2633,2634,2638 (PL, SO, WN, BL, TH) UNI2276,2277,2277,2,278,6083,6084,6088,6089,2299,2280,220,2281,2282,2283 (PL, SO, WN, BL, TH) British Standards: BS45 04, 4506 Chemical Industry Ministry Standard: HG5010-52~HG5028-58, HGJ44-91~HGJ65-91, HG20592-97(HG20593-97~HG20614-97), HG20615-97(HG20616-97~HG20635-97) Mechanical Department Standard: JB81-59~JB86-59, JB / T79-94~JB / T86-94 Pressure Vessel Standard:JB1157-82~JB1160-82, JB4700-2000~JB4707-2000 Marine Flange Standard:GB/T11694-94, GB/T3766-1996, GB/T11693-94, GB10746—89, The GB / T4450- -1995, GB / T11693-94, GB573-65, GB2506-89, CBM1012-81, CBM1013, etc Stainless steel flange (flange is also called flange plate or protruding edge. It is a part where the pipe is connected with the pipe. Connect to the pipe end. The flanges have holes that can penetrate bolts to connect the two flanges closely. Flanges are sealed with liners. Fange fittings (flanged pipe fittings) means fittings with flange (ange or catch). It may be made of cast or threaded or welded. The stainless steel flange coupling (flange, joint) consists of a pair of flanges, a gasket, and several bolt nuts. The gasket is placed between the two flange sealing surfaces. After tightening the nuts, the specific pressure on the gasket surface reaches a certain value after the deformation, and fill the uneven part on the sealing surface, so that the connection is tight without leakage. Some pipe fittings and equipment have brought their own flange plate, but also belong to the flange connection. Flange connection is an important connection mode for pipeline construction。Stainless steel flange metal performance is good, and has a strong corrosion resistance, is often used in steel structure, such as stainless steel flange, stainless steel flange also become no rust acid resistant steel flange, its metal surface is smooth, not easy to oxidation with air, so often used in high pressure water pipes and corrosion pressure pipe, stainless steel flange excellent performance.
