The difference between loose sleeve flange and welded flange

Butt welded ring loose sleeve flange and welded flange are common flanges, they have some differences in structure, application range and characteristics.

Structure: The connection modes of the loose sleeve flange and the welded flange are different. The flat welding flange is the welding of two pipes, pipe fittings or equipment to two parallel and vertical flanges with the pipe axis, and then connected by bolts. The loose sleeve flange is the two pipes, pipe fittings or equipment are welded to two flanges with flanges or steel rings, and then connected by bolts. The role of the flanging or steel ring is to provide the sealing surface, and the role of the flange is to press them.

Application: Flat welded flanges are mainly used for the connection of pipelines, especially in pipelines with low pressure and vibration. The loose sleeve flange is mainly used for the connection of steel, aluminum and other non-ferrous metals and stainless acid-resistant steel containers and corrosion resistant pipelines.

Features: The rigidity and tightness of the flat welded flange is relatively poor, while the loose sleeve flange has better flexibility and tightness, and can be easily disassembled and installed.

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