This standard specifies the types and dimensions of tongue-and-groove welded steel pipe flanges with nominal pressures PN 1.6, 2.5, 4.0, 6.3, 10.0, 16.0 MPa and PN 5.0, 11.0, 15.0, 26.0 MPa. This standard applies to tongue-and-groove welded steel pipe flanges with nominal pressures PN1.6 to PN26.0 MPa. GB/T 9115.3-2000 Tongue-and-groove welded steel pipe flanges GB/T9115.3-2000 Standard download decompression password: www.bzxz.net

1 Scope
National Standard of the People's Republic of China
Steel pipe welding neck flanges with tongue and groove face
GB/T9115.3—2000
Replaces GB/T9115.24~9115.30—1988This standard specifies the types and dimensions of steel pipe flanges with groove face welding with nominal pressure PN of 1.6, 2.5, 4.0, 6.3, 10.0, 16.0MPa and PN of 5.0, 11.0, 15.0, 26.0MPa. This standard is applicable to steel pipe flanges with groove face welding with nominal pressure PN1.6~PN26.0MPa. 2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard by reference in this standard. When this standard is published, the versions shown are all valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T9112-2000 Types and parameters of steel pipe flanges GB/T9124-2000 Technical conditions for steel pipe flanges 3 Types and sizes of flanges
3.1 The types of PN1.6, PN2.5, PN4.0, PN6.3, PN10.0 and PN16.0 MPa sample groove face welded steel pipe flanges shall comply with the provisions of Figure 1, and the dimensions shall comply with the provisions of Tables 1 to 6. 3.2 The types of PN5.0, PN11.0, PN15.0 and PN26.0 MPa sample groove face welded steel pipe flanges shall comply with the provisions of Figure 2, and the dimensions shall comply with the provisions of Tables 7 to 10.
4 Technical requirements for flanges
4.1 The technical requirements for flanges shall comply with the provisions of GB/T9124. 4.2 The maximum non-impact working pressure of the flange at different temperatures shall comply with the provisions of Appendix A (Standard Appendix) of GB/T9124-2000.
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. 4.3
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 1", and the matching British pipe is not marked) and the standard number. 5.2 The type code of the flange sealing surface shall comply with the provisions of GB/T9112. 5.3 Marking examples
Face-to-face welding steel pipe flange with nominal diameter of 80 mm and nominal pressure of 4.0 MPa (40 bar) (equipped with metric pipe): flange DN80-PN40T (Series I) GB/T9115.32000Face-to-face welding steel pipe flange with nominal diameter of 80 mm and nominal pressure of 5.0 MPa (50 bar) (equipped with imperial pipe): flange DN80-PN50G GB/T9115.3—2000Approved by the State Administration of Quality and Technical Supervision on September 28, 2000 and implemented on July 1, 2001
GB/T9 115.3—2000
Figure 1 Sample groove surface (TG) butt welding steel pipe flange
(Applicable to PN1.6, PN2.5, PN4.0, PN6.3, PN10.0 and PN16.0MPa) Wne
3x888.com
Flange welding end
(Outer diameter of steel pipe)
Series 1
Series I
Bolt hole
Center circle
GB/T9115.3—2000
PN1.6MPa(16bar) sample groove Face welding steel pipe flange sealing surface
Use PN4.0MPa flange size
21502092
Series 1 Series I
Flange welding end
(steel pipe outer diameter)
Series 1
Series I
Bolt hole
Center circle
GB/T9115.3—2000
2PN2.5MPa(25bar) sample groove face welding steel pipe flange table 2
Use PN4.0MPa flange size
1140109 2
Series I
Flange welding end
(outer diameter of steel pipe)
Series 1
Series I
Bolt hole
Center circle
GB/T9115.32000
3PN4.0MPa (40bar) sample groove face welding steel pipe flange sealing surface
Series 1 Series 1
Flange welding end
(outer diameter of steel pipe)
Series 1
Series 1
Connection ruler
Bolt hole
Center circle| |tt||GB/T9115.3—2000
Table 4PN6.3MPa(63bar) Sample groove face welding steel pipe flange seal
Flange
Series 1 Series I
Flange welding end
(steel pipe outer diameter)
Series 1
Series 1
Connection size
Bolt hole
Center circle
GB/T9115.3—2000
Table 5PN10.0MPa(100bar) Sample groove face welding steel pipe flange seal||t t||Series 1 Series I
Flange welding end
(Outer diameter of steel pipe)
Series 1
Series I
Bolt hole
Center circle
GB/T9115.3—2000
Table 6PN16.0MPa(160bar) sample groove face welding steel pipe flange seal
Series 1 Series I
GB/T9115.3—2000
Figure 2 Groove face (TG) butt welding steel pipe flange
(Applicable to PN5.0, PN11.0, P N15.0 and PN26.0MPa）9
Flange welding end
(steel pipe outer diameter)
Bolt hole
Center circle
GB/T9115.32000
PN5.0MPa(50bar) Sample groove face welding steel pipe flange sealing surface
Flange neck
Flange welding end
(steel pipe outer diameter)
Bolt hole
Center circle
GB/T9115.3—2000
PN11.0MPa(110bar ）Size of sample groove for welding steel pipe flange
703.5692.5
Sealing surface
Flange welding end
(outer diameter of steel pipe)
Bolt hole
Center circle
GB/T9115.3—2000
Table 9PN15.0MPa(150bar)Size of sample groove for welding steel pipe flange
Sealing surface
Use PN26.0MPa sizebzxz.net
128.5106.5
703.5692.5
Flange
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