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Large flat welding flange: easily obtained, create a simple, low cost, widely used; but less rigid, and therefore should not have used the chemical process piping systems and a high degree of supply and demand, flammable, explosive and high vacuum degree requirements, extremely occasions. sealing surface hazards are flat and raised face.
Advantages Large Flat welding flange is simple to manufacture, low cost, but a large amount of welding work, electrode consumption, can not withstand high temperature, high pressure, repeated bending and temperature fluctuations role, generally used PN≤2.5MPa, at room temperature, t≤0 ℃ operating temperature of the pipeline.
Large plate flat welding flange (HG20593, GB / T9119, JB / T81): easily obtained, create a simple, low cost, widely used; but less rigid, and therefore may not have supply and demand for, flammable, explosive and higher chemical process piping systems and high vacuum degree requirements, extremely hazardous situations. sealing surface type with a flat and raised face.
Industry standardization flange suitable HG20593-1997, national standard GB / T9119-2000, machine standard JB / T81-94
The main dimensions and connection dimensions reference plate flat welding flange (flange) connection is the two pipes, fittings or equipment, each fixed to an upper flange, between two flanges, plus flange gasket, bolted together to complete the connection. some fittings and equipment already comes with flange, also belongs to the flange connection flange connection is an important connection pipeline construction.
Flanged easy to use, able to withstand greater pressure ..
