Regarding the styles of weld lip gaskets
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In the Code for Design of Industrial Metal Piping (GB50316-2000), requirement (2) regarding the selection of flanges in 13.1.3.6 states that in addition to the use of weld lip gaskets, the nominal pressure class of the flange must also be taken into consideration.... What does a weld lip gasket look like? Manufacturers of gaskets offer this type of gasket.
HG 20530-1992 Welding lip sealing rings for steel pipe flanges – Refer to the standard
The term \"welding lip gasket\" is a common name used in China; \"welding gasket\" is a more accurate designation. Depending on the different operating conditions, there are various types of gasket welding methods; their main purpose is to compensate for the relative displacement of the equipment due to temperature or pressure, thereby ensuring zero leakage and enabling repeated use.