JB/T 991-1977 Welded cross pipe joint body
Basic Information
Standard ID:
JB/T 991-1977
Standard Name: Welded cross pipe joint body
Chinese Name:
焊接式四通管接头体
Standard category:Machinery Industry Standard (JB)
state:in force
Date of Release1977-01-17
Date of Implementation:1977-05-01
standard classification number
Standard Classification Number:Machinery>>General Parts>>J15 Pipe Accessories
Publication information
other information
Introduction to standards:
JB/T 991-1977 Welded Cross Pipe Fitting Body JB/T991-1977 Standard Download Decompression Password: www.bzxz.net
Some standard content:
The First Machinery Industry Department of the People's Republic of China standard welded cross pipe joint body
Marking example:
Cross pipe joint body with a pipe outer diameter of 28mm: Joint body 28JB991--77
The First Machinery Industry Department of the People's Republic of China issued the First Machinery Industry Department Standardization Research Institute proposed 362
JB991-77
Replace JB991-67
The remaining 25
Implemented on May 1, 1977bZxz.net
Jinan Foundry and Forging Machinery Research Institute and others drafted the pipe
M12×1.25
M42×2
M52×2
M60×2
Technical conditions are in accordance with the provisions of JB1003-77. JB99177
Nominal size
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