This standard specifies the types and dimensions of concave and convex integral steel pipe flanges with nominal pressure PN of 1.6, 2.5, 4.0, 6.3, 10.0, 16.0 MPa and nominal pressure PN of 5.0, 11.0, 15.0 and 26.0 MPa. This standard is applicable to concave and convex integral steel pipe flanges with nominal pressure PN1.6 to PN26.0 MPa. GB/T 9113.2-2000 Concave and convex integral steel pipe flanges GB/T9113.2-2000 Standard download decompression password: www.bzxz.net

1 Scope
National Standard of the People's Republic of China
Integral steel pipe flanges
with male and female face
GB/T 9113. 22000
Replaces GR/T 9113.9~9113.15-1988This standard specifies the types and dimensions of integral steel pipe flanges with concave and convex faces with nominal pressures PN of 1.6, 2.5, 4.0, 6.3, 10.0, 16.0MPa and nominal pressures PV of 5.0, 11.0, 15.0 and 26.0MPa. This standard is applicable to integral steel arm flanges with nominal pressures PV1.6~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 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, PN1.0, PN6.3, PN10.0 and PN16.0MPa convex integral 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, PN5.0 and PN26.0MPa concave and convex integral 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 regulations of (Appendix A of B/T9124--2000 (Appendix of the standard).
Approved by the State Administration of Quality and Technical Supervision on September 28, 2000, implemented on July 1, 2001
GB/T 9113. 2--2000
Figure 1 Concave and convex surface (MF) integral steel pipe flange (applicable to PN1.6, PN2.5, PN4.0, PN6.3, PN10.0 and PN16.0MPa) 33
GB/T9113.2—2000
Table 1 PN1.6MPa (16bar) concave and convex surface integral steel pipe flange connection dimensions
Bolt hole
Center circle
Sealing surface
Use PN4.0MPa flange dimensions
PN2.5MPa (25bar) concave and convex surface integral steel pipe flange connection dimensions
Bolt hole
Center circle
Sealing surface
Use PN4.oMPa dimensions| |tt||Flange neck
Flange collar
GB/T9113.2—2000
Table 3PN4.0MPa (40bar) concave and convex surface integral steel pipe flange connection size
Bolt hole
Center circlebZxz.net
Sealing surface
PN6.3MPa (63bar) concave and convex surface integral steel pipe flange connection size
Bolt hole
Center circle
Sealing surface
Flange neck
Flange neck
GB/T9113.2—2000
Table 5PN10.OMPa (100bar) concave and convex surface integral steel pipe flange connection size
Bolt hole
Center circle||t t||Sealing surface
PN16.0MPa (160bar) is called convex integral steel pipe flange connection size
Bolt hole
Center circle
Sealing surface
Flange neck
Flange pre
GB/T9113.2—2000
Figure 2 Concave and convex surface (MF) integral steel pipe flange (applicable to PN5.0, PN11.0, PN15.0 and PN26.0MPa)3
GB/T9113.2-2000
PN5.0MPa (50bar) is called convex integral steel pipe flange Table 7
Connection size
Bolt hole
Center circle
Sealing surface
PN11.0MPa(110bar) called convex integral steel pipe flange connection size
bolt hole
center circle
sealing surface
flange neck
GB/T9113.2—2000
PN15.0MPa（150bar）concave and convex integral steel pipe flange table 9
connection size
bolt hole
center circle
sealing surface
PN26.OMPa flange size
PN26.OMPa（260bar） called concave integral steel pipe cover connection size
bolt hole
center circle
sealing surface
rule neck
flange neck
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