GOST 8947-75
GOST 8947−75 Connecting parts from malleable cast iron with cylindrical thread for pipelines. The squares transition. Main dimensions (with Amendments No. 1, 2)
GOST 8947−75
Group B61
INTERSTATE STANDARD
CONNECTING PARTS FROM MALLEABLE CAST IRON WITH CYLINDRICAL THREAD FOR PIPELINES.
SQUARES, TRANSITIONAL
Basic dimensions
Ductile iron and steel fittings with parallel thread for pipelines. Transition angles. 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 8947−59
EDITION (September, 2010) with Changes No. 1, 2 approved in September 1980 and March 1983 (IUS sizes 11−80, 7 to 83).
1a. Elbows shall be manufactured in two versions:
1 — with internal thread;
2 — with external thread.
The standard fully complies ST SEV 3298−81.
(Added, Rev. N 2).
1. The basic sizes of angles shall be as specified in the drawing and in the table.
Version 1
Version 2
Note. The drawing does not define the design of the square.
| Dimensions in mm | |||||||
Conditional pass |
Thread | Weight uncoated kg no more* | |||||
| The variant according to GOST 8944−75 | |||||||
| 1 |
2 | ||||||
| 10x8 |
G |
G |
23 | 23 | - | 0,052 | 0,058 |
| 15x10 |
G |
G |
26 | 26 | 33 | 0,077 | 0,084 |
| 20x10 |
G |
G |
28 | 28 | - | The 0.103 | 0,111 |
| 20х15 |
G |
G |
30 | 31 | 40 | 0,134 | 0,148 |
| 25х15 |
G 1 — |
G |
32 | 34 | - | 0,173 | 0,193 |
| 25х20 |
G 1 — |
G |
35 | 36 | 46 | 0,204 | 0,228 |
| 32х15 |
G 1 |
G |
34 | 38 | - | 0,234 | 0,261 |
| 32х20 |
G 1 |
G |
36 | 41 | - | Is 0.260 | 0,289 |
| 32х25 |
G 1 |
G 1 — |
40 | 42 | 56 | 0,321 | 0,364 |
| 40х25 |
G 1 |
G 1 — |
42 | 46 | - | 0,415 | 0,468 |
| 40х32 |
G 1 |
G 1 |
46 | 48 | - | 0,459 | 0,515 |
| 50x40 |
G 2 — |
G 1 |
52 | 55 | - | 0,598 | 0,669 |
| 65х50 |
G 2 |
G 2 — |
61 | 66 | - | 0,794 | 0,855 |
________________
* For inquiries
Note. Weight of galvanized fittings should not exceed the weight non more than 5%.
Examples of symbols
Transitional gon 1 no coverage =40 mm
=25 mm:
Square 1−40х25 GOST 8947−75
The same zinc-coating:
Angle 1-C-40х25 GOST 8947−75.
(Changed edition, Rev. N 1, 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
