JB/T 998-1977 Welded hinged pipe joint body
Basic Information
Standard ID:
JB/T 998-1977
Standard Name: Welded hinged pipe joint body
Chinese Name:
焊接式铰接管接头体
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
Focal point unit:Mechanical Standardization Institute
Introduction to standards:
JB/T 998-1977 Welded hinged pipe joint body JB/T998-1977 standard download decompression password: www.bzxz.net
Some standard content:
Standard of the First Machinery Industry Ministry of the People's Republic of China Welded hinged pipe joint body
R(ball)=d3/2
Applicable to pipe outer diameter 10-28mm
Marking example:
Hinged pipe joint body with pipe outer diameter 28mm, joint body 28JB998-77
Published by the First Machinery Industry Ministry of the People's Republic of China The First Machinery Industry Ministry Standardization Research Institute proposed 372
JB998-77
Replaced JB998--67
Other ports 3
Applicable to pipe outer diameter 34~50mmWww.bzxZ.net
Implemented on May 1, 1977
Drafted by Jinan Foundry and Forging Machinery Research Institute, etc. Pipe outer diameter
Note, (
Nominal size
) The inner size is limited to the selection of agricultural machinery pipe joints. Technical conditions shall comply with the provisions of JB1003-77. JB998-77
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