JB/T 1623-1992 Boiler tube hole center distance dimension deviation

This standard specifies the dimensional deviation of the center distance of the tube holes on the pressure parts of boilers. JB/T 1623-1992 Dimensional deviation of the center distance of the boiler tube holes JB/T1623-1992 Standard download decompression password: www.bzxz.net

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Standard of the Machinery Industry of the People's Republic of China
Reduced Series Good Set JB/T1623-92
Pu Yi Zheng Shi
Replace JB1623-83
Dimensional deviation of center distance of boiler tube hole
Second floor
1 Subject content and scope of application
This standard specifies the dimensional deviation of center distance of tube hole on boiler pressure components. This standard is applicable to fixed boilers.
Dimensional deviation of center distance of tube hole
Tong Kang Qing Ben
The dimensional deviation of center distance of tube hole opened by mechanical processing method on boiler pressure components (see Figure 1) shall meet the requirements of Table 1. For steam boilers with rated steam pressure less than 0.1MPa (1kgf/cm), the longitudinal deviation of nominal size not more than 260mm in Table 1 can be relaxed to ±2mm.
Nominal size
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≤260
261~500
501~1000
Longitudinal ±1.5, circumferential ±2.0
Approved by the Ministry of Machinery and Electronics Industry of the People's Republic of China on December 21, 1992 Nominal size
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1001~3150
3151~6300
Implemented on May 1, 1993
Additional instructions:
JB/T1623-92
Guan Ye Hang People's Republic of China
This standard was proposed and managed by Shanghai Power Generation Equipment Complete Design Institute and Shanghai Industrial Boiler Research Institute. This standard was drafted by the Boiler Professional Standard Revision Group. This standard was first revised in 1975 and revised for the second time in 1988. From the date of implementation of this standard, JB162383 "Deviation of center distance of boiler tube hole" shall be invalid.
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