Circle-circle pipe reducers
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| Marking | А1,mm | А2,mm | Б,mm | Е1,mm | Е2,mm | d1,mm | d2,mm | S,mm |
| SP-2 | 220 | 300 | 90 | 270 | 356 | 14х28 | 14х28 | 2 |
| SP-2-01 | 218 | 298 | 90 | 270 | 356 | 14х28 | 14х28 | 3 |
| SP-24 | 300 | 380 | 90 | 356 | 436 | 14х28 | 14х28 | 2 |
| SP-24-01 | 298 | 378 | 90 | 356 | 436 | 14х28 | 14х28 | 3 |