GOST 8950-75
GOST 8950−75 Connecting parts from malleable cast iron with cylindrical thread for pipelines. Tees with two transitions. Main dimensions (with Amendments No. 1, 2)
GOST 8950−75
Group B61
INTERSTATE STANDARD
CONNECTING PARTS FROM MALLEABLE CAST IRON WITH CYLINDRICAL THREAD FOR PIPELINES. TEES WITH TWO TRANSITIONS
Basic dimensions
Ductile iron fittings with parallel thread for pipelines. Tees with two passages. Basic dimensions
ISS 23.040.40
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 8950−59
EDITION (September, 2010) with Changes No. 1, 2 approved in September 1980 and March 1983 (IUS sizes 11−80, 7 to 83)
1. The principal dimensions of tees shall be as specified in the drawing and in the table.
The standard fully complies ST SEV 3300−81.
Drawing. The principal dimensions of tees
Note. The drawing does not define the design of the tee.
Dimensions in mm
Conditional pass |
Thread | Weight uncoated kg no more* | ||||||
| Option GOST 8944−75 | ||||||||
| 1 | 2 | |||||||
| 20х15х15 |
G |
G |
G |
30 | 31 | 28 | 0,158 | 0,169 |
| 20х20х15 |
G |
G |
G |
33 | 33 | 31 | 0,185 | 0,198 |
| 25х20х15 |
G 1 — | G |
G |
35 | 36 | 31 | 0,215 | 0,232 |
| 25х15х20 |
G 1 — | G |
G |
32 | 34 | 30 | 0,215 | 0,232 |
| 25х20х20 |
G 1 — | G |
G |
35 | 36 | 33 | 0,246 | 0,266 |
| 25х25х15 |
G 1 — | G 1 — | G |
38 | 38 | 34 | 0,251 | 0,270 |
| 25х25х20 |
G 1 — | G 1 — | G |
38 | 38 | 36 | 0,255 | 0,276 |
| 32х20х20 |
G 1 |
G |
G |
36 | 41 | 33 | 0,299 | 0,331 |
| 32х20х25 |
G 1 |
G |
G 1 — | 36 | 41 | 35 | 0,329 | 0,356 |
| 32х25х25 |
G 1 |
G 1 — | G 1 — | 40 | 42 | 38 | 0,374 | 0,408 |
| 40х25х32 |
G 1 |
G 1 — | G 1 |
42 | 46 | 40 | 0,477 | 0,518 |
_______________
* For inquiries.
Note. Weight of galvanized fittings should not exceed the weight non more than 5%.
Examples of symbols
Tee with two transitions uncoated with a 25 mm by
15 mm and
20 mm:
Tee 25х15х20 GOST 8950−75
The same zinc-coating:
Tee TS-25х15х20 GOST 8950−75
(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:
SB. Standards. — M.: STANDARTINFORM, 2010
