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Understanding of welding neck flange structure and characteristics

2019-12-27 10:05:50   COMMENT:0 HITS:
    The flat welding flange has poor rigidity, which is suitable for pressure P ≤ 4MPa; the butt welding flange is also called welding neck flange, and the common one is F304  Forged Stainless Steel Weld Neck Flange, which is characterized by high rigidity and suitable for high pressure and high temperature occasions. There are three types of flange sealing surface: plane sealing surface, suitable for low pressure and medium-sized occasions; concave convex sealing surface, suitable for occasions with slightly high pressure; tenon groove sealing surface, suitable for occasions with high inflammable, explosive and toxic media. Under pressure. Gasket is a kind of plastic deformation.

  Most of the gaskets are cut from non-metallic plates or manufactured by professional manufacturers according to the specified dimensions. Materials include asbestos rubber plate, asbestos plate, polyethylene plate, etc. metal composite gasket is also made of thin metal plate (white iron sheet, stainless steel) wrapped with asbestos and other non-metallic materials

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