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Specification: 1/2 "~ 240" (10-6000)
Pressure rating: 0.6MPa ~ 32MPa, 150Lb ~ 2500Lb, PN0.25-PN42.0
Material: 304, 304L, 321, 316, 316L, 310S and other materials
Ministry of Chemical Industry standard: HG5010-52 ~ HG5028-58, HGJ44-91 ~ HGJ65-91, HG20592-2009[G20615-2009 (Calss series)]
Application: boiler pressure vessel, petroleum, chemical industry, shipbuilding, pharmaceutical, metallurgy, machinery, food and other industries.
Pressure vessel flange
Specifications: DN300~3000
Product Note: Pressure vessel flange Application industry: HVAC power building water supply pressure vessel accessories, pressure pipeline accessories.
Product category: Flange series
Application industries: HVAC, electricity, building water supply, pressure vessel fittings, pressure pipeline fittings.
Application technical parameter
Seal nominal pressure PN, MPa (bar) 0.6 1.0 1.6 2.5 4.0 6.4
Concave and convex surface (MFM) DN1300~3000 DN300~3000 DN400~2000 DN300~800
Tenon surface (TG) DN1300~3000 DN300~3000 DN300~3000 DN300~800
Full plane (FF) DN300~3000 DN300~3000 DN300~3000 DN300~800
Flat welded flange
The flat welded flange includes plate flat welded flange and neck flat welded flange.
Flat welded flange (PL)
The flat welded flange is suitable for the connection of steel pipe with nominal pressure not exceeding 2.5MPa. The sealing surface of the flat welded flange can be made of smooth type, concave and convex type and tenon type three. The application of smooth flat welded flange is the largest. It is mostly used in the case of moderate medium conditions, such as low-pressure unpurified compressed air and low-pressure circulating water.
Flat welded flange with neck (SO)
The neck height of flat welded flange with neck is low, which improves the stiffness and bearing capacity of the flange. Compared with the butt welding flange, the welding workload is large, the welding rod consumption is high, can not withstand high temperature and high pressure and repeated bending and temperature fluctuations, but the field installation is more convenient, can omit the weld patting and kneading process, and is more popular.
Neck Butt welding (WN)
Butt welded flange: Neck flange welding is often referred to as "high junction" flange. The aim is to transfer pressure in the pipe, thereby reducing the concentration of high stress in the flange. Neck flange welds are best designed for butt welds that offer flanges due to their inherent structural value. However, the price is relatively high, because the production process of the product is complex.
Threaded (threaded) flange:
The threaded flange is connected with a thread. But the center of the product has a thread size corresponding to the pipe. Its main advantage is that it can be assembled without welding.
In addition, there are sliding flanges and lap flanges.
Socket welding Flange (SW)
Sealing surface form: protrudate (RF), concave and convex (MFM), mortise and groove (TG), ring joint (RJ)
According to the chemical (HG) industry standard:
Integral flange (IF), threaded flange (Th), flat welded flange (PL), butt welded flange with neck (WN), flat welded flange with neck (SO), socket welded flange (SW), butt welded ring loose flange (PJ/SE), flat welded ring loose flange (PJ/RJ), lining flange cover (BL(S)), flange cover (BL)
According to the petrochemical (SH) industry standard:
threaded flange (PT), butt welded flange (WN), flat welded flange (SO), socket welded flange (SW), loose sleeve flange (LJ), flange cover (not noted).
According to the mechanical (JB) industry standard:
whole flange, butt welded flange, plate flat welded flange, butt welded ring plate loose sleeve flange, flat welded ring plate loose sleeve flange, flanging ring plate loose sleeve flange, flange cover.
According to the national (GB) standard:
integral flange, threaded flange, butt welded flange, with neck flat welded flange, with neck socket welding flange, butt welded with neck loose sleeve flange, flat welded flange, butt welded ring plate loose sleeve flange, flat welded ring plate loose sleeve flange, flanged ring plate loose sleeve flange, flange cover.
Connection mode:
flange (flange) connection is the two pipes, fittings or equipment, first fixed in a flange flange, between the two flanges, plus flange pad, bolted together to complete the connection. Some pipe fittings and equipment have their own flanges, which are also flange connections. Flange connection is an important connection mode in pipeline construction. The flange connection is easy to use and can withstand greater pressure. In industrial pipes, in the home, the pipe diameter is small, and it is low pressure, and the flange connection is not visible. If you are in a boiler room or production site, there are flanged pipes and equipment everywhere.
According to the connection method, the type of flange connection can be divided into: plate flat welded flange, flat welded flange with neck, butt welded flange with neck, socket welded flange, threaded flange, flange cover, butt welded with neck ring loose flange, flat welded ring loose flange, ring groove flange and flange cover, large diameter flat flange, large diameter high neck flange, figure 8 blind plate, butt welded ring loose flange, etc
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