This standard specifies the types and sizes of convex and concave face welding steel pipe flanges with nominal pressure PN of 1.6, 2.5, 4.0, 6.3, 10.0, 16.0 MPa and 5.0, 11.0, 15.0, 26.0 MPa. This standard is applicable to convex and concave face welding steel pipe flanges with nominal pressure PN1.6 to PN26.0 MPa. GB/T 9115.2-2000 Concave and convex face welding steel pipe flanges GB/T9115.2-2000 Standard download decompression password: www.bzxz.net

1 Scope
National Standard of the People's Republic of China
Concave and convex face welding steel pipe flanges
Steel pipe welding neck flangeswith male and female face
GB/T 9115.2—2000
Replaces GB/T9115.17~9115.231988
This standard specifies the types and dimensions of concave and convex face welding steel pipe flanges with nominal pressure PN of 1.6, 2.5, 4.0, 6.3, 10.0, 16.0MPa and nominal pressure PN of 5.0, 11.0, 15.0, 26.0MPa. This standard is applicable to concave and convex face welding steel pipe flanges with nominal pressure PN1.6~PN26.0MPa. 2 Referenced StandardsWww.bzxZ.net
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, 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 PN16.0MPa concave and convex face welding 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 PN26.0MPa concave and convex face welding 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.
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 I", 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 example
Raised face butt welding steel pipe flange with nominal diameter of 80mm and nominal pressure of 4.0MPa (40bar) (equipped with metric pipe): Flange DN80-PN40M (Series I) GB/T9115.2-2000 Concave face butt welding steel pipe flange with nominal diameter of 80mm and nominal pressure of 5.0MPa (50har) (equipped with imperial pipe); Flange DN80-PN50 F GB/T 9115.2-2000 Approved by the State Administration of Quality and Technical Supervision on September 28, 2000 and implemented on July 1, 2001
GB/T9115.2-2000
Figure 1 is called raised face (MF) butt welding steel pipe flange (applicable to PN1.6, PN2.5, PN4.0, PN6.3, PN10.0 and PN16.0 MPa)2000
GB/T 9115.2-
7602097
09-~01
2—2000
GB/T 9115.2
201o20
#26896
#28 #98
GB/T9115.2—2000
GB/T 9115. 2
GB/T 9115.2--2000
102602
GB/T9115.2—2000
GB/T9115.2--2000
Figure 2 Concave and convex surface (MF) butt welding steel pipe flange (applicable to PN5.0, PN11.0, PN15.0 and PN26.0 MPa)93
GB/T9115.2--2000
Household ship standard
China
GB/T 9115. 2-2000
269802
0691529
——0
GB/T 9115.2--2000
Specified by user
1695269102
188269
0·989
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.