The Arrow-4M is a self-propelled X-ray crawler engineered for internal radiographic inspection of medium-small-diameter pipelines in the oil and gas sector. It carries the X-ray generator through the pipe interior, allowing operators to position the radiation source directly at each weld joint for optimal image quality. The integrated magnetic positioning system provides precise, repeatable stopping accuracy at target locations, streamlining the inspection workflow and enhancing both safety and productivity on site.
With an expanded operational diameter range compared to the Arrow-3M, the unit is ideally suited for flowlines, production headers, and distribution piping commonly used in upstream and midstream facilities across the Gulf region. The Arrow-4M combines robust mechanical design with advanced positioning technology, making it a dependable choice for pipeline contractors and inspection companies operating in demanding Middle Eastern field conditions.
| Technical Specifications: | STRELA-4M Delivery Set: | ||
| Pipe diameters (mm) | 325÷920 | Self-propelled CRAWLER unit | 1 |
| Maximum assembled crawler weight (kg) | 70 | X-ray generator 200 kV | 1 |
| Operating range (km) | 5 | Magnetic control system – transmitter – receiver | 1 |
| Travel speed (m/min) | 18 | ||
| Positioning accuracy (mm) | ±1 | ||
| Climbing angle | 30º | Battery pack | 2 |
| Turning radius | ≥10D | Charger set | 1 |
| Motor power (W) | 400 | Extended shaft set | 1 |
| Wheel drive RWD | 6×2 | Cable set | 1 |
| Rechargeable batteries (V, Ah) | 120/17 | Spare parts kit | 1 |
| Operating temperature range | -30º~ +50º | Transport case | 3 |
| Humidity | ≤90% | Equipment documentation (in English) | |
| X-ray tube (model) | XC31A | Passport | 1 |
| Tube voltage (kV) | 100÷200 | Operation manual | 1 |
| Radiation beam (panoramic) | 40º × 360º | Warranty card (12 months) | 1 |
| Automatic tube current (mA) | 3 to 5 | Customs Union / GOST-R Declaration of Conformity | 1/1 |
| Focal spot (mm) | 1.0 × 2.0 | Expert opinion | 1 |
| Penetrating capacity Fe (mm), Agfa D7 film | 25 | Licenses | 1 |
The working structure is divided into three lightweight units (crawler, battery, generator), making assembly convenient for two people.
The model range (Arrow 3M–7M) allows working with pipelines from 219 to 1420 mm.
Forced air flow to the generator while driving reduces downtime between exposures.
The remote magnetic positioning system ensures stopping accuracy with an error of up to 0.5 mm with a wall thickness of up to 35 mm.
Mitsubishi Electric controllers guarantee stable operation and trouble-free automation.
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