1 Scope
This standard specifies the dimensions and technical requirements of double-jacketed gaskets for the pressure vessel flanges.
This standard is applicable to double-jacketed gaskets for the "B-type Socket-weld Flange" (NB/T 47022) and "Welding Neck Flange" (NB/T 47023).
Note: the use of materials containing asbestos shall comply with requirements of related laws and regulations. During the production and use of gaskets containing asbestos, protective measures shall be taken to avoid any personal health hazard.
2 Normative References
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies. For undated references, the latest edition (including all the amendments) of the normative document applies.
1 Scope 1
2 Normative References 1
3 Code, Designation and Designation Example 1
4 Structural Type and Dimension 2
5 Technical Requirements 5
