This standard replaces JB 79-82. This standard specifies the types and dimensions of tongue-and-groove face-welded steel pipe flanges with nominal pressures PN of 4.0, 6.3, and 10.0MPa. This standard is applicable to tongue and groove face welded steel pipe flanges with nominal pressure PN4.0~10.0MPa. JB/T 82.3-1994 Tongue and groove face welded steel pipe flange JB/T82.3-1994 Standard download and decompression password: www.bzxz.net

Machinery Industry Standard of the People's Republic of China
Rod groove face welding steel pipe flange
Subject content and scope of application
JB/T 82.3-. 94
Replaces B82 ·59
This standard specifies the type and size of surface welded steel pipe flanges with a nominal pressure PN of 4.0.6.3.10.0MPa. This standard is applicable to grooved surface welded steel pipe flanges with nominal pressure PN4.0~10.0MPa. 2 Reference standard
JB/T 74#
Pipeline flange technical conditions
3 The type and size of the flange should comply with the regulations in Figure 1 and Tables 1 to 3. s:
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Note: 1) The neck slope of PN16.0 and PN20.0MPa flanges is 1:2. Figure 1
4 The technical requirements for flanges are in accordance with JB/T74. 5. The nominal pressure of the flange and the maximum allowable working pressure at different temperatures are in accordance with the provisions of Appendix B of JB/T74. 6 Marking example
nominal diameter 300mm, nominal pressure 4.0MPa, size series 2 sample face welded steel pipe flange: flange 300-40CJB/T82.3—94
nominal Face-welded steel pipe flange with diameter 300mm, nominal pressure 4.0MPa, size series 1: Flange 300-40D (series 1) JB/T82.3-94 Ministry of Machinery Industry of the People's Republic of China 1994-12-09 Approved for implementation on 1995-10-01
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