When using the JB standard system, it should be no less than PN1.6MPa. Are there similar chemical industry standards?
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For pipelines transporting general flammable media, when the older SH standard system is used, the nominal pressure class should be no less than PN2.0MPa; when the JB standard system is used, it should be no less than PN1.6MPa. Are there any similar HG standards?
For chemical process pipelines, the HG standard system also specifies corresponding nominal pressure class requirements. However, to find the specific HG standard that corresponds exactly to the JB benchmark function, it is necessary to consult the relevant HG standard documents. The HG standard is the code for the general standards used by Chinese chemical enterprises, and it applies to industries such as chemicals, petroleum, and plastics. For exact standard references and pressure rating requirements, it is recommended to consult the latest HG standard documents and relevant chemical engineering design codes. .
This applies to fluid-like substances and wound gaskets. See GB50316 and GB20801