May I ask if flat washers need to be added to the flanges of the heat exchanger?
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I’d like to ask everyone: Are flat washers required for the fasteners on the flanges of pressure vessel equipment and pipe nozzles? Why? Are there corresponding standards that have set such requirements?
Flange connections on pressure vessels or pipes usually require gaskets instead of flat washers. Gaskets are used to ensure sealing between flanges and prevent fluid leakage. Decisions regarding whether to use gaskets and what type of gasket to use are generally based on relevant design standards and specifications, such as GB and ASME. It is recommended to consult the design specifications for the specific equipment or seek advice from a professional engineer. .
It’s not necessary; refer to the standard HG (20592-20315)-2009 series for a word-for-word understanding, as the answers you need are contained there.