1. Scope
This standard specifies the general rules for selection of the steel pipe flange, gaskets and bolting (PN designated).
This standard is applicable to the steel pipe flange, gaskets and bolting which are specified in the HG/T 20592 - HG/T 20613.
2. Normative References
The following provisions contained in the following standards are turned into the provisions of this national standard by being referred in this national standard. For date reference, the subsequent amendments to (excluding amending error in the text) or revisions of, any of these publications do not apply. And parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. For undated references, its latest edition referred to applies.
HG/T 20592 "Steel Pipe Flanges (PN Designated)"
HG/T 20606 "Non-metallic Flat Gaskets for use with Steel Pipe Flanges (PN designated)"
HG/T 20607 "PTFE Envelope Gaskets for use with Steel Pipe Flanges (PN designated)"
HG/T 20609 "Metal Jacketed Gaskets for use with Steel Pipe Flanges (PN designated)"
HG/T 20610 "Spiral Wound Gaskets for use with Steel Pipe Flanges (PN designated"
HG/T 20611 "Covered Serrated Metal Gaskets for use with Steel Pipe Flanges (PN designated)"
HG/T 20612 "Metallic Ring Joint Gaskets for use with Steel Pipe Flanges (PN designated)"
HG/T 20613 "Bolting for use with Steel Pipe Flanges (PN designated)"
3. Selection Specification
3.0.1 Pipe Flange
2. Normative References
3. Selection Specification
Appendix A (Informative) Operating Instructions of the Pipe Flange for Gaskets
