This standard specifies the types and dimensions of flat-face and raised-face flat-weld steel pipe flanges with nominal pressure PN of 0.6, 1.0, 1.6, 2.5, 4.0 MPa and nominal pressure PN of 2.0, 5.0, 11.0, 15.0 and 26.0 MPa. This standard applies to flat-face and raised-face flat-weld steel pipe flanges with nominal pressure PN0.6 to PN26.0 MPa. GB/T 9116.1-2000 Flat-face and raised-face flat-weld steel pipe flanges with necks GB/T9116.1-2000 Standard download decompression password: www.bzxz.net

1 Scope
National Standard of the People's Republic of China
Hubbed slip-on-welding 'steel pipe flangeswithflatface or raised face
GB/T 9116.12000
Replaces GB/T 9116.1-9116-1C1988
This standard specifies the types and dimensions of flat-face and raised-face flat-welded steel pipe flanges with nominal pressure PN of 0.6, 1.0, 1.6, 2.5, 4.0 MPa and nominal pressure PN of 2.0, 5.0, 11.0, 15. (and 26.0 MPa. This standard applies to flat-face and raised-face flat-welded steel pipe flanges with nominal pressure PNO.6~PV26.0 MPa. 2 Reference standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised to make Parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T91122000 Types and parameters of steel pipe flanges GB/T91242000 Technical conditions for steel pipe flanges 3 Types and sizes of flanges
3.1 The types of PNO.6, PN1.0, PN1.6, PN2.5 and PN4.0MPa flat face flat-welded steel pipe flanges shall comply with the provisions of Figure 1, and the sizes shall comply with the provisions of Tables 1 to 5. 3.2 The types of PNO.6, PN1.0, PN1.6, PN2.5 and PN4.0MPa raised face flat-welded steel pipe flanges shall comply with the provisions of Figure 2, and the sizes shall comply with the provisions of Tables 1 to 5 3.3 The type of PN2.0MPa flat face flat-welded steel pipe flange with neck shall comply with the provisions of Figure 3, and the size shall comply with the provisions of Table 6. 3.4 The type of PN2.0 and PN5.0MPa raised face flat-welded steel pipe flange with neck shall comply with the provisions of Figure 1, and the size shall comply with the provisions of Table 6 and Table 7.
3.5 The type of PN11.0, PN15.0 and PN26.0MPa raised face flat-welded steel pipe flange with neck shall comply with the provisions of Figure 5, and the size shall comply with the provisions of Table 7 to Table 10.
4 Technical requirements for flanges
4.1 The technical requirements for flanges shall comply with the provisions of GB/T9124. 4.2 Flanges shall not be The maximum impact working pressure at temperature shall comply with the provisions of Appendix A (Standard Appendix) of GB/T9124-2000.
4.3 The welding joint type and groove size of the flange shall comply with the provisions of Appendix B (Suggestive Appendix) of GB/T9124-2000. 5 Marking
5.1 The flange shall be marked according to the nominal diameter, nominal pressure, sealing surface type code, matching steel pipe series code (the matching metric pipe code is Series II, and the matching British pipe is not marked) and standard number. Approved by the State Administration of Quality and Technical Supervision on September 28, 2000, implemented on July 1, 2001
GB/T 9116. 1-2000
5.2 The type code of the flange sealing surface shall comply with the provisions of GB/T9112. 5.3 Marking examples
5.3.1 Marking examples for flat-surface steel pipe flanges with necks Flat-surface steel pipe flanges with nominal diameter of 100 mm and nominal pressure of 2.5 MPa (25 bar) (for metric pipes): flange DN100-PN25FF (Series 1) GB/T9116.12000 Flat-surface steel pipe flanges with necks with nominal diameter of 100 mm and nominal pressure of 2.5 MPa (25 bar) (for imperial pipes): flange DN100-PN25 FF GB/T 9116.1-20005.3.2 Marking examples of raised face flat weld steel pipe flanges Raised face flat weld steel pipe flange with a nominal diameter of 80 mm and a nominal pressure of 2.5 MPa (25 bar) (for metric pipes): Flange DN80-PN25RF (Series 1) GB/T9116.12000 Raised face flat weld steel pipe flange with a nominal diameter of 100 mm and a nominal pressure of 5.0 MPa (50 bar) (for imperial pipes): Flange 1N100-PN50 RF GB/T 9116.1--2000 Figure 1
Flat face (FF) flat-welded steel pipe flange with neck
(Applicable to TPNO.6, PN1.0, PN1.6, PN2.5 and PN4.0MPa) D
Figure 2 Raised face (RF) flat-welded steel pipe flange with neck (Applicable to PNO.6, PN1.0, PN1.6, PN2.5 and PN4.0MPa) GB/T9116.1--2000
GB/T 9116. 1—2000
GB/T9116.1--2000wwW.bzxz.Net
Figure in
GB/T9116.1--2000
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GB/T 9116. .---2000
Figure
GB/T9116.1---2000
Figure 3 Flat face (FF) flat weld steel pipe flange with neck (applicable to PN2.0MPa)
Figure 4 Raised face (RF) flat weld steel pipe flange with neck (applicable to PN2.0 and PN5.0MPa)
GB/T 9116.1---2000
Figure 5 Raised face (RF) flat-welded steel pipe flange with neck (applicable to PN11.0, PV15.0 and PN26.0MPa) 2000
GB/T9116.1
Figure
GB/T9116.1-2000
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GB/T9116.1--2000
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