Flange type parts
flange parts are a kind of disk parts, mainly used for the connection between pipes and equipment.
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Flange
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Flange parts
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Flange type parts
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flange parts are a kind of disk parts, mainly used for the connection between pipes and equipment. The flange is provided with holes. The two flanges are tightly connected by bolts and sealed with gaskets. Flange parts are widely used in chemical equipment, pressure vessels and pipeline engineering.
The main function of flange parts is to pre-tighten the bolts, so that the gasket between the sealing surface of the flange is pressed and tightened, and the uneven gap on the sealing surface of the flange is filled, so as to prevent the permeability leakage of the medium through the capillary holes inside the gasket and the interface between the gasket and the sealing surface. The flange connection has the advantages of reliable sealing, high strength and wide range of adaptation, so it is the most widely used in chemical and pharmaceutical equipment and pipelines .
There are many types of flange parts according to different classification standards. According to the material classification, there are 20 steel, A105, Q235A, etc. According to the type of sealing surface, there are plane (FF), protruding surface (RF), convex surface (M), concave surface (F), etc. According to the national standard classification, there are integral flange, threaded flange, butt welded flange, neck flat welded flange and so on. In addition, there are also types of flanges classified by chemical, petrochemical and mechanical standards .
The following points should be noted when using flange parts: First, different pressure flanges have different thicknesses and use different bolts; Secondly, when installing, it is necessary to ensure that the pre-tightening specific pressure of the bolt pre-tightening force acting on the gasket is not lower than the pre-tight sealing specific pressure; Finally, choose the appropriate flange type and sealing surface form to ensure the reliability and safety of the connection
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