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中文DBG Series Full Hydraulic Pipe Puller
Product Overview
The SEMW DBG Series Full Hydraulic Pipe Puller is auxiliary equipment for extracting steel casing in foundation drilling and cast-in-place pile construction. Designed to grip and pull casing during withdrawal operations, it can be used alongside full casing rotators, casing oscillators, or rotary drilling equipment according to the approved construction method.
Four models—DBG1300, DBG1600, DBG2100 and DBG2500—provide different casing size ranges and hydraulic pull-out forces. Choosing the correct model depends on casing diameter, embedded depth, ground resistance and available lifting and drilling equipment.
Ø600–2400 mm Across the SeriesFour models cover different casing diameters; each model has its own working range.
Up to 8000 kNMaximum rated pull-out force varies from 3600 to 8000 kN by model.
Hydraulic Clamping & Remote ControlHydraulic casing clamping and a separately powered station support controlled extraction.
DBG Model Comparison
The four models are differentiated primarily by their casing range, clamping-cylinder stroke, maximum pulling force and working-device weight. The dimensions below are taken from the supplied SEMW DBG series brochure.
| Working Device Parameter | DBG1300 | DBG1600 | DBG2100 | DBG2500 |
|---|---|---|---|---|
| Casing extraction range | Ø600–1300 mm | Ø800–1600 mm | Ø1000–2000 mm | Ø1200–2400 mm |
| Clamping-cylinder stroke | 235 mm | 235 mm | 160 mm | 180 mm |
| Maximum pull-out force | 3600 kN | 4500 kN | 6000 kN | 8000 kN |
| Up-and-down travel | 600 mm | 600 mm | 600 mm | 600 mm |
| Maximum pull-out speed | 25 mm/s | 22 mm/s | 36 mm/s | 22 mm/s |
| Working-device weight | 8 t | 10 t | 21 t | 25 t |
Hydraulic Power Station
The DBG Series uses electric-motor-driven hydraulic power stations. The DBG1300 and DBG1600 share one listed power configuration, while the DBG2100 and DBG2500 use a higher-output configuration.
| Power Station Parameter | DBG1300 / DBG1600 | DBG2100 / DBG2500 |
|---|---|---|
| Motor model | YE2-250M-4 | YE2-250M-4 |
| Installed motor power | 55 kW | 110 kW (55 kW × 2) |
| System pressure | 30 MPa | 30 MPa |
| Hydraulic oil tank capacity | 600 L | 750 L |
| Power-station weight | 3 t | 4 t |
| Control mode | Wireless remote control | Wireless remote control |
Pipe Pulling Operation & Site Application
After the required foundation drilling or concreting operations, the pipe puller grips the casing and applies vertical hydraulic pulling force. The extraction procedure must be coordinated with the casing design, concrete-placement sequence and site-specific method statement.
Typical uses: withdrawing temporary casing in cast-in-place piling, casing recovery following full casing drilling, and selected casing-removal operations in geotechnical construction. Tool suitability and achievable extraction loads depend on actual site conditions.
How to Select a DBG Pipe Puller
Choosing a DBG model is not simply a matter of selecting the largest pull-out force. Match the required casing diameter to the published extraction range first, then assess the casing length, ground friction, predicted extraction load, working-platform bearing capacity and available hydraulic power supply.
DBG1300 / DBG1600Suitable for evaluating Ø600–1600 mm casing requirements within each model's specified range.
DBG2100Ø1000–2000 mm range with a published maximum pull-out force of 6000 kN.
DBG2500Ø1200–2400 mm range and the highest published force of this four-model series: 8000 kN.
Frequently Asked Questions
Q1. What is the difference between a DBG pipe puller and a casing rotator?
Q2. Which DBG model provides the highest casing extraction force?
Q3. What is the casing range of the DBG2100?
Q4. Do all DBG models use the same hydraulic power station?
Q5. What site information should be shared before requesting a quotation?
Send SEMW your casing diameter, ground conditions and required pulling force for equipment selection support. See the related DAG steel column implantation equipment for a separate foundation installation application.
