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large diameter flange large caliber flange
The large diameter flat welded flange connection is c♥onvenient to use, can withstand greater pressure, and plays an important r∞ole and value in use. In industrial pipelines, large ↕flange connections are widely used and have different meanings and functions in ≈industry.
Large-caliber flat welded flange refers to the flange that e✔xceeds the size specified by the relevant state departments, ge$nerally refers to the flange of DN2000 or more size, and th✘e production of such flanges should be made by the construction party to provide drawings for production.
The common large diameter flanges are flat welded flanges and b♥utt welded flanges. The structure and scope of use of ≥flat welding large diameter flange and butt welding large diameter flange are different, and the characteristics and advantages can be displayed will be different, so it is n&ecessary to use for different ranges to ensure that the flange plays an important role.
Large diameter flange introduction
Large diameter flange is not easy to deform, sealed wel♥l, widely used, suitable for pressure or temperature≈ fluctuations of the pipeline or high temperature, high pressure and low tempe×rature pipelines, the advantage is that the price is relatively cheap, nominal pressu↔re does not exceed 2.5MPa.
Characteristics of large diameter flange: anti-corrosion,← smooth surface, acid, alkali and high temperature resistance, reasonable price, good texture peφrformance.
Production material and process: 201, 304, 321, 304L, 316L, 310S , 2205, 904L and other carbon steel, stainless steel, alloy steel.
Large diameter flange production process: forging, casting, cutting, rolling these four kinds.
Pressure class description of large diameter flanges: Operating pressures are 75σ, 150, 300, 400, 600 and 900 lb.
The steel of large-diameter flat welded flange is poor, and it λis suitable for occasions where the pressure p≤4MPa; B®utt welded flange, also known as high neck flange, has greater rigidity and is suit$able for occasions with high pressure and temperature. There are three types¥ of flange sealing surface: flat sealing surface, suitable fo↕r occasions where the pressure is not high and the mλedium is non-toxic; Concave and convex sealing surface, suitable for slightly₹ higher pressure occasions; Groove sealing surface, suitable for flamm¶able, explosive, toxic media and high pressure occasions. Different αproperties of flanged pipe fittings have good product performance in different fields, and th÷e effectiveness of different occasions and Spaces will be dif₹ferent.
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