title>JB/T 978-1977 Welded hinged pipe joints - JB/T 978-1977 - Chinese standardNet - bzxz.net
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JB/T 978-1977 Welded hinged pipe joints

Basic Information

Standard ID: JB/T 978-1977

Standard Name: Welded hinged pipe joints

Chinese Name: 焊接式铰接管接头

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

associated standards

alternative situation:JB 978-1967

Publication information

other information

Drafting unit:Jinan Foundry and Forging Machinery Research Institute

Focal point unit:Mechanical Standardization Institute

Proposing unit:The First Machine Industry Ministry Standardization Institute

Introduction to standards:

This standard applies to the articulated pipe joints in the oil-based medium management system, with a nominal pressure of 320kgf/cm2 and a working temperature of -25 to 80°C. JB/T 978-1977 Welded articulated pipe joints JB/T978-1977 Standard download decompression password: www.bzxz.net

Some standard content:

The First Machinery Industry Department of the People's Republic of China standard welded hinged pipe joints
JB978-77
Replaces JB978--67
This standard applies to hinged pipe joints in oil-based pipeline systems, with a nominal pressure of 320kgf/cm2 and a working temperature of -25~80℃.
Applicable pipe outer diameter 10~28mm
Marking example:
Pipe outer diameter D. 28mm hinged pipe joint
Pipe joint 28JB978-77bzxZ.net
The First Machinery Industry Ministry of the People's Republic of China issued the First Machinery Industry Ministry Standardization Institute proposed that the applicable pipe outer diameter is 34~50mm
Implementation on May 1, 1977
Jinan Foundry and Forging Machinery Research Institute and others drafted 343
M10×1
(18)(12) (M20×1.5)
(M24×1.5)
M27×2
M33×2
M42×2
M48×2
Note, (
JB978--77
) The inner size is limited to the selection of agricultural machinery pipe joints. Technical conditions are in accordance with the provisions of JB1003-77.
Standard No.
JB998-77
Joint body
The material of the seamless steel pipe is 15, 20 steel, and the precision is ordinary grade. 2
JB982—77
Assembly
JB999--77
M10×1.5×25
M14×1.5×32
M18×1.5×38
M20×1.5×38
M22×1.5×48
M24X1.5X48
M27×2×55
M33×2×70
M42×2×85
M48×2×95
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