JB/T 1883-1977 Welded end straight long pipe joint

JB/T 1883-1977 Welding end straight long pipe joint JB/T1883-1977 standard download decompression password: www.bzxz.net

The First Machinery Industry Department of the People's Republic of China standard welded straight-through long pipe joints
JB1888-77
This standard applies to straight-through long pipe joints in oil-based pipeline systems, with a nominal pressure of 320kgf/cm2 and a working temperature of -25 to 80°C.
Marking example:
Tube outer diameter D.18mm, thread diameter d22mm, pitch 1.5mm straight-through long pipe joints 18/M22×1.53B1883-77
The First Machinery Industry Department of the People's Republic of China issued the proposal of the First Machinery Industry Department Standardization Research Institute and implemented on May 18, 1977
Jinan Foundry and Forging Machinery Research Institute and others drafted 389||tt ||6(M10×1)
8(M14×1.5)
10(M18×1.5)bZxz.net
15/(M22×1.5)
M27×2
2820(M27×2)
M33×2
25(M33×2)
M 42×2
32(M42×2)
JB 1883-77
8/16.535/59.517
1216.53560.519
Standard No. B2099
JB981-77
162665111
Note: Dimensions in brackets should not be used as much as possible.
j65113
721225560
7212460
7813465
Technical conditions shall comply with the provisions of JB1003-77. 70
GB1235
O-ring
Rubber I-4
JB1884-77
Joint body
Parts nominal
M12×1.25[
[M16×1.5
6/M10×1
10/M10 × 1
KAOKAca-
Assembly
10/M14x 1.5
[16× 2.4
20×2,4
M27x1.520x2.4
[M30×1.524x2.4
M30x1.524x2.4
M42×2
M52×2
M60×2
The material of the seamless steel pipe is 15, 20 steel, and the precision is ordinary grade. 390
14/M14 × 1.5
14/M18×1,5
18/M18×1.5
18/M22×1.5
22/M22 ×3.1!
28/M33X2
34/M33X2
34/M42× 2
42/M42X2
42/M48×2
50/M48X2
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