JB/T 977-1977 Welded branch pipe joints
Basic Information
Standard ID:
JB/T 977-1977
Standard Name: Welded branch pipe joints
Chinese Name:
焊接式分管管接头
Standard category:Machinery Industry Standard (JB)
state:in force
Date of Implementation:2004-11-01
standard classification number
Standard Classification Number:Machinery>>General Parts>>J15 Pipe Accessories
Publication information
other information
Introduction to standards:
JB/T 977-1977 Welded branch pipe joint JB/T977-1977 Standard download decompression password: www.bzxz.net
Some standard content:
The First Machinery Industry Department of the People's Republic of China Standard Welded Branch Pipe Fittings
JB977-77
Replaces JB977-87
This standard applies to branch pipe fittings in oil-based pipeline systems, with a nominal pressure of 320kgf/cm2 and a working temperature of -25 to 80℃.
Marking example:
Branch pipe fittings with a pipe outer diameter of 28mm, and a fitting body of 28JB977-77
Issued by the First Machinery Industry Department of the People's Republic of China Proposed by the Standardization Research Institute of the First Machinery Industry Department Implementation on May 1, 1977
Drafted by Jinan Foundry and Forging Machinery Research Institute, etc. 341
JB977-77bZxz.net
Standard No.
Technical conditions are in accordance with the provisions of JB1003-77. 1
JB98077
JB981—77
GB1235-
O-ring
Rubber-4
M12×1.25
M36×2
M42×2
M52×2
2. The material of the seamless steel pipe is 15, 20 steel, and the precision is ordinary grade. 342
JB997—77
Joint body
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