Description
Product Description GOST 17376 Reducer
GOST 17376 Reducer refers to a type of pipe fitting manufactured according to the GOST 17376 standard, which is widely used in Russia and other CIS countries. This standard defines the specifications for steel butt-welded pipe fittings, including reducers.
Types of GOST 17376 Reducers:
- Concentric Reducer:
- The centerlines of the inlet and outlet are aligned.
- Typically used in vertical piping systems.
- Eccentric Reducer:
- The centerlines of the inlet and outlet are offset.
- Commonly used in horizontal piping systems to prevent air pockets.
GOST 17376 Concentric and Eccentric Reducer Dimensions Chart (in lbs)
NOMINAL PIPE SIZE | OUTSIDE DIAMETER | END TO END | |
---|---|---|---|
Inch | D | P | H |
3/4 x 1/2 | 26.7 | 21.3 | 38 |
3/4 x 3/8 | 26.7 | 17.1 | 38 |
1 x 3/4 | 33.4 | 26.7 | 51 |
1 x 1/2 | 33.4 | 21.3 | 51 |
1 1/4 x 1 | 42.2 | 33.4 | 51 |
1 1/4 x 3/4 | 42.2 | 26.7 | 51 |
1 1/4 x 1/2 | 42.2 | 21.3 | 51 |
1 1/2 x 1 1/2 | 48.3 | 42.2 | 64 |
1 1/2 x 1 | 48.3 | 33.4 | 64 |
1 1/2 x 3/4 | 48.3 | 26.7 | 64 |
1 1/2 x 1/2 | 48.3 | 21.3 | 64 |
2 x 1 1/2 | 60.3 | 48.2 | 76 |
2 x 1 1/4 | 60.3 | 42.2 | 76 |
2 x 1 | 60.3 | 33.4 | 76 |
2 x 3/4 | 60.3 | 26.7 | 76 |
2 1/2 x 2 | 73 | 60.3 | 89 |
2 1/2 x 1 1/2 | 73 | 48.3 | 89 |
2 1/2 x 1 1/4 | 73 | 42.2 | 89 |
2 1/2 x 1 | 73 | 33.4 | 89 |
3 x 2 1/2 | 88.9 | 73 | 89 |
3 x 2 | 88.9 | 60.3 | 89 |
3 x 1 1/2 | 88.9 | 48.3 | 89 |
3 x 1 1/4 | 88.9 | 42.2 | 89 |
3 1/2 x 3 | 101.6 | 88.9 | 102 |
3 1/2 x 21/2 | 101.6 | 73 | 102 |
3 1/2 x 2 | 101.6 | 60.3 | 102 |
3 1/2 x 1 1/2 | 101.6 | 48.3 | 102 |
3 1/2 x 1 1/4 | 101.6 | 42.2 | 102 |
4 x 3 1/2 | 114.3 | 101.6 | 102 |
4 x 3 | 114.3 | 88.9 | 102 |
4 x 2 1/2 | 114.3 | 73 | 102 |
4 x 2 | 114.3 | 60.3 | 102 |
4 x 1 1/2 | 114.3 | 48.3 | 102 |
5 x 4 | 141.3 | 114.3 | 127 |
5 x 3 1/2 | 141.3 | 101.6 | 127 |
5 x 3 | 141.3 | 88.9 | 127 |
5 x 2 1/2 | 141.3 | 73 | 127 |
5 x 2 | 141.3 | 60.3 | 127 |
6 x 5 | 168.3 | 141.3 | 140 |
6 x 4 | 168.3 | 114.3 | 140 |
6 x 3 1/2 | 168.3 | 101.6 | 140 |
6 x 3 | 168.3 | 88.9 | 140 |
6 x 2 1/2 | 168.3 | 73 | 140 |
8 x 6 | 219.1 | 168.3 | 152 |
8 x 5 | 219.1 | 141.3 | 152 |
8 x 4 | 219.1 | 114.3 | 152 |
8 x 3 1/2 | 219.1 | 101.6 | 152 |
10 x 8 | 273.1 | 219.1 | 178 |
10 x 6 | 273.1 | 168.1 | 178 |
10 x 5 | 273.1 | 141.3 | 178 |
10 x 4 | 273.1 | 114.3 | 178 |
12 x 10 | 323.9 | 273.1 | 203 |
12 x 8 | 323.9 | 219.1 | 203 |
12 x 6 | 323.9 | 168.3 | 203 |
12 x 5 | 323.9 | 141.3 | 203 |
14 x 12 | 355.6 | 323.9 | 330 |
14 x 10 | 355.6 | 273.1 | 330 |
14 x 8 | 355.6 | 219.1 | 330 |
14 x 6 | 355.6 | 168.3 | 330 |
16 x 14 | 406.4 | 355.6 | 356 |
16 x 12 | 406.4 | 323.9 | 356 |
16 x 10 | 406.4 | 273.1 | 356 |
16 x 8 | 406.4 | 219.1 | 356 |
16 x 6 | 406.4 | 168.3 | 356 |
18 x 16 | 457 | 406.4 | 381 |
18 x 14 | 457 | 355.6 | 381 |
18 x 12 | 457 | 323.9 | 381 |
18 x 10 | 457 | 273.1 | 381 |
18 x 8 | 457 | 219.1 | 381 |
20 x 18 | 508 | 457 | 508 |
20 x 16 | 508 | 406.4 | 508 |
20 x 14 | 508 | 355.6 | 508 |
20 x 12 | 508 | 323.9 | 508 |
20 x 10 | 508 | 273.1 | 508 |
20 x 8 | 508 | 219.1 | 508 |
22 x 20 | 559 | 508 | 508 |
22 x 18 | 559 | 457 | 508 |
22 x 16 | 559 | 406.4 | 508 |
22 x 14 | 559 | 355.6 | 508 |
22 x 12 | 559 | 323.9 | 508 |
24 x 10 | 559 | 273.1 | 508 |
24 x 22 | 610 | 559 | 508 |
24 x 20 | 610 | 508 | 508 |
24 x 18 | 610 | 457 | 508 |
24 x 16 | 610 | 406.4 | 508 |
24 x 14 | 610 | 355.6 | 508 |
24 x 12 | 610 | 323.9 | 508 |
24 x 10 | 610 | 273.1 | 508 |
GOST 17376 Concentric and Eccentric Reducer Weight Chart (in lbs)
Run x Branch | Schedule 40 (lbs) | Schedule 80 (lbs) | Schedule 160 (lbs) |
---|---|---|---|
3/4" x 1/2" | 0.6 | 0.8 | 1.0 |
1" x 3/4" | 1.0 | 1.4 | 1.8 |
1 1/4" x 1" | 1.4 | 2.0 | 2.6 |
1 1/2" x 1" | 1.6 | 2.4 | 3.2 |
2" x 1 1/2" | 2.3 | 3.2 | 4.3 |
2 1/2" x 2" | 3.0 | 4.4 | 5.9 |
3" x 2" | 4.2 | 6.1 | 8.2 |
3" x 2 1/2" | 4.4 | 6.5 | 8.7 |
4" x 3" | 6.1 | 9.1 | 12.2 |
5" x 4" | 8.3 | 12.5 | 16.7 |
6" x 4" | 10.3 | 15.5 | 20.7 |
6" x 5" | 11.0 | 16.5 | 22.0 |
8" x 6" | 16.3 | 24.5 | 32.7 |
10" x 8" | 22.0 | 33.0 | 44.0 |
12" x 10" | 28.6 | 43.0 | 57.3 |
14" x 12" | 37.6 | 56.4 | 75.2 |
16" x 12" | 46.6 | 69.9 | 93.2 |
18" x 16" | 59.0 | 88.5 | 118.0 |
20" x 16" | 71.0 | 106.5 | 142.0 |
24" x 20" | 98.0 | 147.0 | 196.0 |
24" x 10" | 78.0 | 117.0 | 156.0 |
GOST 17376 Concentric and Eccentric Reducer Tolerance
Parameter | Tolerance |
---|---|
Outside Diameter (OD) | Large End: ±1% of nominal OD or ±0.5 mm (whichever is greater) |
Small End: ±1% of nominal OD or ±0.5 mm (whichever is greater) | |
Wall Thickness (WT) | ±12.5% of specified wall thickness |
Reducer Length (L) | ±1.5% of the nominal length or ±3 mm (whichever is greater) |
Concentricity | Offset ≤5% of the nominal OD at the small end (for concentric reducers) |
Eccentricity | Offset ≤5% of the nominal OD at the small end (for eccentric reducers) |
End Preparation | ±1 mm for bevel length and ±2° for bevel angle |
Out-of-Roundness | ≤1% of nominal OD at both ends |
Surface Finish | Free from defects such as cracks, dents, or visible seams |
Marking Tolerance | Legible and durable markings in accordance with ASME, ANSI, or applicable standards |
Advantages:
- Durable and reliable for high-pressure and high-temperature applications.
- Designed for a smooth flow transition, minimizing turbulence and pressure loss.
- Manufactured with precision to meet the dimensional and performance standards of GOST 17376.
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