What is the installation sequence of non-standard flanges?

What is the installation sequence of non-standard flanges?

Non-standard flanges are flanges used in pipelines during pipeline installation and are used in equipment to refer to the inlet and outlet flanges of equipment. So do you know what is the installation sequence of non-standard flanges

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Flat welding flange

Flat welding flanges can also be called forged flanges, plate flat welding flanges, threaded flanges, PE pipe matching flanges, and steam pipeline flanges.

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large flange

Large flanges are also called rolled flanges, spliced ​​flanges, large diameter flanges, and wind power flanges. Large flanges refer to flanges that exceed the size specified by the relevant state departments. Generally refers to the flange size above DN2000. Such products are all welded products without threaded buttons. The specifications often used for threaded products are DN15-DN100. In the national flange standard GB/T9119-2010, the largest size among the pressure standards of 0.25MPa to 1.6Mpa is DN2000. When it reaches the 2.5MPa pressure standard, the maximum is DN800. The production of such flanges must be produced by the construction party providing drawings. There are three production processes: forging, rolling and splicing. If the product size is too large, it can only be rolled and spliced.

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The connection method of the national standard flange

The national standard flange (flange) connection is to fix two pipes, pipe fittings or equipment on a flange plate first, add flange pads between the two flange plates, and fasten them together with bolts. connect. Some pipe fittings and equipment already have their own flanges, which are also flanged connections. Flange connection is an important connection method in pipeline construction. Flange connection is easy to use and can withstand greater pressure. In industrial pipelines, flange connections are widely used. In the home, the pipe diameter is small, and it is low pressure, and the flange connection is not visible. If you are in a boiler room or production site, there are flanged pipes and equipment everywhere.

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