Flat welding flange structure and characteristics

Flat welding flange is a kind of disc-shaped part, which is common in pipeline engineering. The flanges are used in pairs. In pipeline engineering, the flange is mainly used for the connection of pipelines. In the pipelines that need to be connected, various installations For a flange, the low-pressure pipe can use the wire flange, the welding flange is used for pressure above 4 kg. The sealing point is added between the two butt welding flanges, and then tightened with bolts. The flanges with different pressures have Different thicknesses and use different bolts.

Flat welding flange has poor rigidity and is suitable for occasions with pressure p≤4MPa. Butt welding flange is also called high neck flange, which has high rigidity and is suitable for occasions with high pressure temperature. There are three types of flange sealing surface. : Flat sealing surface, suitable for low pressure, medium occasion; concave and convex sealing surface, suitable for occasions with high pressure; groove sealing surface, suitable for flammable, explosive, toxic medium and high pressure occasions. A gasket is a ring made of a material that is plastically deformed and has strength. Most gaskets are cut from non-metal sheets or are manufactured to a specified size by a professional factory. The material is asbestos rubber sheet. Asbestos board, polyethylene board, etc.; also used metal sheet gaskets made of thin metal sheets (white metal, stainless steel) wrapped with non-metallic materials such as asbestos.