GOST 8949-75
GOST 8949−75 Connecting parts from malleable cast iron with cylindrical thread for pipelines. Tees transitional. Main dimensions (with Amendments No. 1, 2)
GOST 8949−75
Group B61
INTERSTATE STANDARD
CONNECTING PARTS FROM MALLEABLE CAST IRON WITH CYLINDRICAL THREAD FOR PIPELINES. TEES TRANSITIONAL
Basic dimensions
Ductile iron and steel fittings with parallel thread for pipelines. Transition tees. 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 8949−59
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 tees.
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 | The 0.103 | 0,101 |
| 15х8 |
G |
G |
24 | 24 | 0,115 | 0,111 |
| 15x10 |
G |
G |
26 | 26 | 0,119 | 0,115 |
| 15h20 |
G |
G |
31 | 30 | 0,163 | 0,158 |
| 15h25 |
G |
G 1 — | 34 | 32 | 0,199 | 0,193 |
| 20х8 |
G |
G |
26 | 27 | Of 0.152 | 0,148 |
| 20x10 |
G |
G |
28 | 28 | 0,168 | 0,160 |
| 20х15 |
G |
G |
30 | 31 | 0,183 | 0,178 |
| 20x25 |
G |
G 1 — | 36 | 35 | 0,198 | 0,193 |
| 20х32 |
G |
G 1 |
41 | 36 | 0,206 | 0,202 |
| 25х8 |
G 1 — | G |
28 | 31 | 0,228 | Of 0.219 |
| 25х10 |
G 1 — | G |
30 | 32 | 0,235 | 0,227 |
| 25х15 |
G 1 — | G |
32 | 34 | 0,255 | 0,246 |
| 25х20 |
G 1 — | G |
35 | 36 | 0,285 | 0,277 |
| 25х32 |
G 1 — | G 1 |
42 | 40 | 0,304 | 0,315 |
| 25х40 |
G 1 |
G 1 |
46 | 42 | 0,315 | 0,308 |
| 32х10 |
G 1 |
G |
32 | 36 | 0,342 | 0,334 |
| 32х15 |
G 1 |
G |
34 | 38 | 0,352 | 0,340 |
| 32х20 |
G 1 |
G |
36 | 41 | 0,382 | 0,370 |
| 32х25 |
G 1 |
G 1 — | 40 | 42 | 0,430 | 0,418 |
| 32х40 |
G 1 |
G 1 |
40 | 46 | 0,434 | 0,424 |
| 32х50 |
G 1 |
G 2 — | 54 | 48 | 0,444 | 0,429 |
| 40х15 |
G 1 |
G |
36 | 42 | 0,459 | 0,442 |
| 40х20 |
G 1 |
G |
38 | 44 | 0,494 | 0,474 |
| 40х25 |
G 1 |
G 1 — | 42 | 46 | 0,552 | 0,531 |
| 40х32 |
G 1 |
G 1 |
46 | 48 | 0,616 | 0,557 |
| 40x50 |
G 1 |
G 2 — | 55 | 52 | 0,650 | 0,628 |
| 50х15 |
G 2 — | G |
38 | 48 | 0,672 | 0,646 |
| 50х20 |
G 2 — | G |
40 | 50 | 0,714 | 0,685 |
| 50х25 |
G 2 — | G 1 — | 44 | 52 | 0,788 | 0,752 |
| 50х32 |
G 2 — | G 1 |
48 | 54 | 0,867 | 0,832 |
| 50x40 |
G 2 — | G 1 |
52 | 55 | 0,940 | 0,914 |
| 65х25 |
G 2 |
G 1 — | 47 | 60 | 0,091** | 0,080** |
| (65х32) |
G 2 |
G 1 |
52 | 62 | 1,124 | 1,085 |
| (65х40) |
G 2 |
G 1 |
55 | 63 | 1,192 | 1,160 |
| (65х50) |
G 2 |
G 2 — | 61 | 66 | 1,345 | 1,330 |
| 80х25 |
G 3 — | G 1 — | 51 | 67 | 1,375 | 1,369 |
| 80х32 |
G 3 — | G 1 |
55 | 70 | 1,390 | 1,368 |
| (80 x 40) |
G 3 — | G 1 |
58 | 71 | 1,484 | 1,450 |
| (80x50) |
G 3 — | G 2 — | 64 | 73 | 1,646 | 1,630 |
| (80х65) |
G 3 — | G 2 |
72 | 76 | 1,860 | 1,840 |
| (100x50) |
G 4 — IN | G 2 — | 70 | 86 | 2,826 | 2,765 |
| (100х65) |
G 4 — IN | G 2 |
78 | 89 | 3,150 | 3,040 |
| (100х80) |
G 4 — IN | G 3 — | 84 | 92 | 3,421 | 3,290 |
_______________
* For inquiries.
** The text of the document matches the original. — Note the manufacturer’s database.
Notes:
1. The tees 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
Transition tee without covering with 40 mm to
32 mm:
Tee 40х32 GOST 8949−75
The same zinc-coating:
Tee TS-40х32 GOST 8949−75
(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
