JB/T 2771-1992 PN16.0～32.0MPa joint

This standard specifies the type, size, and technical requirements of external threaded connection joints for forged high-pressure valves. This standard applies to joints with nominal pressure pN16.0~32.0MPa and nominal diameter DN3~200mm. JB/T 2771-1992 PN16.0～32.0MPa joints JB/T2771-1992 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of Chinawww.bzxz.net
PN16.0~～32.0MPa Joint
Subject Content and Scope of Application
This standard specifies the type, size, technical requirements, etc. of external threaded joints for forged high-pressure valves. JB/T 2771 *92
Replaces JB277170
This standard applies to joints with nominal pressure PN16.0~32.0MPa and nominal diameter IN3~25mm 2 Reference Standards
GB699 Technical Conditions for High-quality Carbon Structural Steel
GB1220 Stainless Steel Bars
JIB/T450 Technical Conditions for PN16.0~~32.0MPa Forged Angle High-pressure Valves, Pipe Fittings, Fasteners Structural Type and Size
The type and size of the joint shall be as specified in Figure 1 and Table 1. R0.5
Marking example
Connector with inner diameter of 6mm:
Connector 6JB/T2771
Approved by the Ministry of Machinery and Electronics Industry of the People's Republic of China on 1992-07-20The rest
199301-01Implementation
Nominal pressure
25.0,32.0
Nominal diameter DN
Technical requirements
The materials of the connector shall comply with the provisions of Table 2.
ICrl8Ni12Mo2Ti
JB/T 2771--92
The mechanical properties of the connector after heat treatment shall comply with the provisions of Table 3. 4.2
1Cr18Ni12Mo2Ti
Inspection rules
The magnetic particle inspection and other technical conditions of the connector shall comply with the provisions of JB/T450. Additional Notes:
This standard was proposed and managed by the Hefei General Machinery Research Institute of the Ministry of Machinery and Electronics Industry. This standard was drafted by the Hefei General Machinery Research Institute of the Ministry of Machinery and Electronics Industry. The main drafters of this standard are Huang Mingya and Wang Xiaojun. 100
Standard No.
GB 699
GB1220
N·m/cm\
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