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Designed to verify the circular integrity of conduits after backfilling, these proving mandrels are constructed from high-density polyethylene for exceptional durability and natural lubricity. Each unit is assembled with galvanized wire rope and secured with aluminum ferrules, forming sturdy eyelets at both ends for easy rope attachment during hauling.


| Model No. | Weight (kg) | Dimensions (mm) | Approx Equip OD (9mm) | Conduit Nom OD (mm) | Mandrel Length (mm) |
|---|---|---|---|---|---|
| DPM-014T | - | 24 x 14 | 14 | - | - |
| DPM-018T | - | 30 x 18 | 18 | - | - |
| DPM-024T | - | 40 x 24 | 24 | - | - |
| DPM-028T | - | 45 x 28 | 28 | - | - |
| DPM-032T | - | 55 x 32 | 32 | - | - |
| DPM-038T | - | 60 x 38 | 38 | - | - |
| DPM-050E | 0.15 | 270 x 40 | 40 | 50 | 80 |
| DPM-050T | 0.15 | 270 x 47 | 47 | 50 | 80 |
| DPM-063E | 0.3 | 350 x 52 | 52 | 63 | 100 |
| DPM-063T | 0.35 | 350 x 60 | 60 | 63 | 100 |
| DPM-080 | 0.95 | 500 x 74 | 74 | 80 | 180 |
| DPM-100 | 2 | 500 x 90 | 90 | 100 | 180 |
| DPM-125 | 2.85 | 565 x 118 | 113 | 125 | 245 |
| DPM-150 | 3.2 | 565 x 130 | 130 | 150 | 245 |
| DPM-200 | 4.5 | 600 x 184 | 184 | 200 | 280 |