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Help CenterGOST 17378 Concentric Reducing Pipe Fittings
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Our company has various types of stamping abrasive, custom processing of various types of carbon steel / alloy steel / stainless steel concentric reducers, eccentric reducers. Reducing the standard GB, ANSI, GOST and Gezhongfeibiao products. The roundness of the reducer shall not be greater than 1% of the corresponding outside diameter, and the allowable deviation shall be ± 3mm.
GOST 17378 Pipe Reducer Specifications
| |
| Nominal | D1 | D2 | Lenght | Nominal | D1 | D2 | Lenght | ||||
| A series | B series | A series | B series | A series | B series | A series | B series | ||||
| 25×20 | 33.7 | 32 | 26.9 | 25 | 51 | 500×350 | 508 | 529 | 355.6 | 377 | 508 |
| 25×15 | 33.7 | 32 | 21.3 | 18 | 550×550 | 559 | - | 508 | 529 | 508 | |
| 32×25 | 42.4 | 38 | 33.7 | 32 | 51 | 550×450 | 559 | - | 457 | 478 | |
| 32×20 | 42.4 | 38 | 26.9 | 25 | 550×400 | 559 | - | 406 | 426 | ||
| 32×15 | 42.4 | 38 | 21.3 | 18 | 600×500 | 610 | 630 | 508 | 529 | 508 | |
| 40×32 | 48.3 | 45 | 42.4 | 38 | 64 | 600×450 | 610 | 630 | 457 | 478 | |
| 40×25 | 48.3 | 45 | 33.7 | 32 | 600×400 | 610 | 630 | 406 | 426 | ||
| 40×20 | 48.3 | 45 | 26.9 | 25 | 650×600 | 660 | - | 610 | 630 | 610 | |
| 50×40 | 60.3 | 57 | 48.3 | 45 | 76 | 650×500 | 660 | - | 508 | 529 | |
| 50×32 | 60.3 | 57 | 42.4 | 38 | 650×450 | 660 | - | 457 | 478 | ||
| 50×25 | 60.3 | 57 | 33.7 | 32 | 700×600 | 711 | 720 | 610 | 630 | 610 | |
| 65×50 | 76.1 | 76 | 60.3 | 57 | 89 | 700×500 | 711 | 720 | 508 | 529 | |
| 65×40 | 76.1 | 76 | 48.3 | 45 | 700×450 | 711 | 720 | 457 | 478 | ||
| 65×32 | 76.1 | 76 | 42.4 | 38 | 750×700 | 762 | - | 711 | 720 | 610 | |
| 80×65 | 88.9 | 89 | 76.1 | 76 | 89 | 750×600 | 762 | - | 601 | 630 | |
| 80×50 | 88.9 | 89 | 60.3 | 57 | 750×500 | 762 | - | 508 | 529 | ||
| 80×40 | 88.9 | 89 | 48.3 | 45 | 800×700 | 813 | 820 | 711 | 720 | 610 | |
| 100×80 | 88.9 | 108 | 88.9 | 89 | 102 | 800×600 | 813 | 820 | 610 | 630 | |
| 100×65 | 114.3 | 108 | 76.1 | 76 | 800×500 | 813 | 820 | 508 | 529 | ||
| 100×50 | 114.3 | 108 | 60.3 | 57 | 850×700 | 864 | - | 711 | 720 | 610 | |
| 125×100 | 114.3 | 133 | 114.3 | 108 | 127 | 850×600 | 864 | - | 610 | 630 | |
| 125×80 | 139.7 | 133 | 88.9 | 89 | 850×500 | 864 | - | 508 | 529 | ||
| 125×60 | 139.7 | 133 | 76.1 | 76 | 900×800 | 914 | 920 | 813 | 820 | 610 | |
| 150×125 | 139.7 | 159 | 139.7 | 133 | 140 | 900×700 | 914 | 920 | 711 | 720 | |
| 150×100 | 168.3 | 159 | 114.3 | 108 | 900×600 | 914 | 920 | 610 | 630 | ||
| 150×80 | 168.3 | 159 | 88.9 | 89 | 1000×900 | 1016 | 1020 | 914 | 920 | 610 | |
| 200×150 | 168.3 | 219 | 168.3 | 159 | 152 | 1000×800 | 1016 | 1020 | 813 | 820 | |
| 200×125 | 219.1 | 219 | 139.7 | 133 | 1000×700 | 1016 | 1020 | 711 | 720 | ||
| 200×100 | 219.1 | 219 | 114.3 | 108 | 1050×1000 | 1067 | - | 1016 | 1020 | 610 | |
| 250×200 | 219.1 | 273 | 219.1 | 219 | 178 | 1050×900 | 1067 | - | 914 | 920 | |
| 250×125 | 273 | 273 | 168.3 | 159 | 1050×800 | 1067 | - | 813 | 820 | ||
| 250×150 | 273 | 273 | 139.7 | 133 | 1100×1000 | 1118 | 1120 | 1016 | 1020 | 610 | |
| 300×250 | 273 | 325 | 273 | 273 | 203 | 1100×900 | 1118 | 1120 | 914 | 920 | |
| 300×200 | 323.9 | 325 | 219.1 | 219 | 1100×800 | 1118 | 1120 | 813 | 820 | ||
| 300×150 | 323.9 | 325 | 168.3 | 159 | 1200×1100 | 1220 | 1220 | 1118 | 1120 | 711 | |
| 350×300 | 323.9 | 377 | 323.9 | 325 | 330 | 1200×1000 | 1220 | 1220 | 1016 | 1020 | |
| 350×250 | 355.6 | 377 | 273 | 273 | 1200×900 | 1220 | 1220 | 914 | 920 | ||
| 400×200 | 355.6 | 377 | 291.1 | 219 | 1300×1200 | 1321 | 1320 | 1120 | 1120 | 711 | |
| 400×350 | 355.6 | 426 | 355.6 | 377 | 356 | 1300×1100 | 1321 | 1320 | 1118 | 1120 | |
| 400×300 | 406.4 | 426 | 323.9 | 325 | 1300×1000 | 1321 | 1320 | 1016 | 1020 | ||
| 400×250 | 406.4 | 426 | 273 | 273 | 1400×1300 | 1420 | 1420 | 1321 | 1320 | 711 | |
| 450×400 | 406.4 | 478 | 406.4 | 426 | 381 | 1400×1200 | 1420 | 1420 | 1220 | 1220 | |
| 450×350 | 457 | 478 | 355.6 | 377 | 1400×1100 | 1420 | 1420 | 1118 | 1120 | ||
| 450×300 | 457 | 478 | 323.6 | 325 | 1500×1400 | 1524 | 1520 | 1420 | 1420 | 711 | |
| 500×450 | 457 | 529 | 457 | 478 | 508 | 1500×1300 | 1524 | 1520 | 1321 | 1320 | |
| 500×400 | 508 | 529 | 406.4 | 426 | 1500×1200 | 1524 | 1520 | 1220 | 1220 | ||
High-quality products
Reducing pipe, also known as the size of head, it is a chemical pipe fittings, mainly for two different diameter connections; Concentric reducer mainly has the following characteristics: 1, when the flow of fluid in the pipeline changes, such as increased or decreased, the flow rate requirements change is not, are required to use adjustable tube. 2, into the pump inlet, in order to prevent cavitation. 3, and instruments, such as flow meters, regulating valve joints, in order to join with the instrument joints, also need to use different-diameter pipe.
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Pipe Reducer Production Process
Pipe Reducer workshop
Production Process
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