This standard specifies the types and dimensions of raised face welded ring loose sleeve steel pipe flanges with nominal pressure PN of 2.0, 5.0, 11.0, 15.0, 26.0 and 42.0 MPa. This standard applies to raised face welded ring loose sleeve steel pipe flanges with nominal pressure PN2.0 to PN42.0 MPa. GB/T 9118.1-2000 Raised face welded ring loose sleeve steel pipe flanges with nominal pressure PN9118.1-2000 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of ChinabzxZ.net
Loose hubbed steel pipe flanges with welding neck collarwith raised face
1 Scope
GB/T 9118.1--2000
Replaces GB/T 9118.1~~9118.2-1988This standard specifies the types and dimensions of raised face steel pipe flanges with welding neck collarwith raised face with nominal pressure PN of 2.0, 5.0, 11.0, 15.0, 26.0 and 42.0MPa.
This standard is applicable to raised face steel pipe flanges with welding neck collarwith raised face with nominal pressure PN2.0~PN42.0MPa. 2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard by reference in this standard. The versions shown are valid when this standard is published. 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
PN2.0, PN5.0, PN11.0, PN15.0, PN26.0 and PN42.0MPa The types of raised face welded ring with neck loose sleeve steel pipe flanges shall comply with the provisions of Figure 1, and the dimensions shall comply with the provisions of Tables 1 to 6. 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 flanges at different temperatures shall comply with the provisions of Appendix A (whose 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 and 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 welded ring neck loose sleeve steel pipe flange with nominal diameter of 80mm and nominal pressure of 5.0MPa (50bar): Flange DN80-PN50 RF GB/T 9118.1--2000 Approved by the State Administration of Quality and Technical Supervision on September 28, 2000 1809
Implementation on July 1, 2001
GB/T9118.1-—2000
Note: 1 is the wall thickness of the short section, which is generally the wall thickness of the steel pipe; t2 should not be less than the minimum wall thickness of the steel pipe. Figure 1 Raised face (RF) butt welding ring with neck loose sleeve steel pipe flange (applicable to PN2.0, PN5.0, PN11.0, PN15.0, PN26.0 and PN42.0MPa) 181
9118.1—2000
GB/T9118.1--2000
Torque only
GB/T9118.12000
()°98
GB/T 9118.1-2000
—5-0
GB/T9118. 1
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