GOST 8946-75
GOST 8946−75 Connecting parts from malleable cast iron with cylindrical thread for pipelines. Squares are isolated. Main dimensions (with Amendments No. 1, 2)
GOST 8946−75
Group B61
INTERSTATE STANDARD
CONNECTING PARTS FROM MALLEABLE CAST IRON WITH CYLINDRICAL THREAD FOR PIPELINES. SQUARES BUSHING
Basic dimensions
Ductile iron and steel fittings with parallel thread for pipelines. Union passage elbews. Basic dimensions.
ISS 23.040.60
Date of introduction 1977−01−01
The decision of the State standards Committee of the Council of Ministers of the USSR from
Limitation of actions taken by Protocol No. 2−92 of the Interstate Council for standardization, Metrology and certification (ICS 2−93)
REPLACE GOST 8946−59
EDITION (September, 2010) with Changes No. 1, 2 approved in September 1980 and March 1983 (IUS sizes 11−80, 7 to 83)
This standard applies to through-elbows 90° and 45° malleable cast iron with cylindrical thread for pipelines.
Standard is fully consistent with CT CMEA 3298−81.
(Added, Rev. N 2).
1a. Triangles with an angle of 90° must be manufactured in two versions:
1 — with internal thread;
2 — with external thread.
(Added, Rev. N 2).
1. The basic sizes of triangles with an angle of 90° should correspond to those on features.1 and in table.1.
Version 1
Version 2
Damn.1
Note. The drawing does not define the design of the square.
Table 1
| Dimensions in mm | |||||
Conditional pass |
Thread |
Weight without cover, kg, not more* | |||
| Option for GOST 8944−75 | |||||
| 1 |
2 | ||||
| 8 |
G |
21 | 28 | 0,042 | 0,045 |
| 10 |
G |
25 | 32 | 0,059 | 0,064 |
| 15 |
G |
28 | 37 | 0,094 | The 0.103 |
| 20 |
G |
33 | 43 | Of 0.146 | Of 0.152 |
| 25 |
G 1 — |
38 | 52 | 0,229 | 0,241 |
| 32 |
G 1 |
45 | 60 | 0,352 | 0,351 |
| 40 |
G 1 |
50 | 65 | 0,494 | 0,438 |
| 50 |
G 2 — |
58 | 74 | 0,790 | 0,720 |
| (65) |
G 2 |
69 | 88 | 1,141 | 1,030 |
| (80) |
G 3 — |
78 | 98 | 1,521 | 1,409 |
| (100) |
G 4 — IN |
96 | - | 3,079 | 2,680 |
________________
* For inquiries
Notes:
1. Triangles with specified in the table in brackets is not recommended.
2. Weight of galvanized fittings should not exceed the weight non more than 5%.
Examples of symbols
Passage of the angle bracket 90° 1 no coverage =40 mm:
Elbow 90°-1−40 GOST 8946−75
The same zinc-coating:
Elbow 90°-1-C-40 GOST 8946−75.
(Changed edition, Rev. N 1, 2).
1B. Triangles with an angle of 45° must be manufactured in two versions:
1 — with internal thread;
2 — with external thread.
1B. The principal dimensions of a square with 45° angle should match those in hell.2 and in table.2.
Version 1
Version 2
Damn.2
Note. The drawing does not define the design of the square.
Table 2
| Dimensions in mm | |||
Conditional pass |
Thread |
||
| 10 |
G |
0 | 25 |
| 15 |
G |
22 | 28 |
| 20 |
G |
25 | 32 |
| 25 |
G 1 — |
28 | 37 |
| 32 |
G 1 |
33 | 43 |
| 40 |
G 1 |
36 | 46 |
| 50 |
G 2 — |
43 | 55 |
Examples of symbols
Passage of a square with 45° angle versions 1 no coverage =40 mm:
Elbow 45°-1−40 GOST 8946−75
The same zinc-coating:
Elbow 45°-1-C-40 GOST 8946−75.
(Added, Rev. N 2).
2. The constructive dimensions and technical requirements — GOST 8944−75.
The electronic text of the document
prepared by JSC «Code» and checked by:
the official publication of the
Pipes of metal and connecting
parts to them. Part 4. Pipe black
metals and alloys cast and connective
parts to them. The basic dimensions. Methods
technological tests of tubes:
Compilation of national standards. -
M.: STANDARTINFORM, 2010
