
The PQWT PQ325A and PQ325A+ are compact pipeline inspection robots designed for inspecting pipes with an inner diameter of 110 mm or larger.
Their compact design allows them to operate in relatively narrow pipelines, while the high-definition camera system provides real-time visual information during inspection.
The system combines a mobile inspection robot, cable reel and touch-screen controller to support routine pipeline inspection and maintenance.
With 1080P image resolution, LED lighting and a maximum cable length of 100 m, the PQ325A series is designed to help inspection teams identify internal pipe conditions without relying solely on manual inspection.

Key Features
- Small-Diameter Pipe Inspection: Suitable for pipes with an inner diameter of 110 mm or larger.
- 1080P Camera: Captures high-definition images during inspection.
- Compact Robot Design: The robot body weighs approximately 2.4 kg.
- Water Ingress Alarm: Alerts the operator when the robot detects water submersion.
- 100 m Cable: Supports inspection operations with a cable length of up to 100 m.
- LED Lighting: Six front LED lights and a detachable flashlight support visibility inside pipelines.
- Touch-Screen Control:An 11.5-inch touch-screen tablet supports inspection and recording functions.
Application Scenarios
Pipeline Inspection and Maintenance
The PQWT PQ325A series is designed for routine inspection and maintenance of pipelines where visual access is limited.

Potential applications include:
- Drainage system inspection
- Sewer pipeline maintenance
- Inspection of pipe blockages
- Identification of sediment accumulation
- Assessment of pipe damage
- Inspection of joint misalignment
- Investigation of corrosion and structural defects
- Inspection of narrow and enclosed spaces
The actual application scope should be confirmed according to the robot's operating conditions, pipe environment and customer requirements.
Why Use a Pipeline Inspection Robot?
Traditional pipeline inspection can be time-consuming, particularly when access is restricted or manual inspection is difficult.
A compact inspection robot can provide visual information from inside the pipe, helping operators identify potential problems and determine whether further maintenance is required.
The PQWT PQ325A series combines a compact inspection unit, camera system, lighting and recording functions in one solution.

Main Specifications
| Product model | PQ325A | PQ325A+ |
|---|---|---|
| Cable reel and cable type | 5 mm tensile and wear-resistant twisted-pair cable, manual cable winding | 5 mm tensile and wear-resistant twisted-pair cable, electric cable winding |
| Applicable pipe diameter | pipes with diameter ≥110 mm | |
| Wheels | 60 mm diameter | |
| Inspection distance | ≤100 m | |
| Camera | fixed front camera, 2 megapixels (1080P) | |
| Number of cameras | 1 | |
| Lighting | 6 front high-brightness LED lights + 1 detachable flashlight | |
| Visible distance | 2 m | |
| Robot body material | aluminum alloy + stainless steel | |
| Robot pulling force | 1.7 kg | |
| Maximum speed | 0.24 m/s | |
| Chassis height | 10 mm | |
| Climbing angle | 30° | |
| Controller | 11.5-inch touch-control tablet | |
| Image resolution | 1080P | |
| Cable tensile strength | 50 kg | |
| Communication between cable reel and robot | wired transmission | |
| Communication between cable reel and controller | WiFi connection | |
| Operating temperature | -10°C to 55°C | |
| Charging time | approximately 12 hours | |
| Battery life | ≥8 hours | |
| Main functions | project information, tilt display, direction display, photo and video recording, water ingress alarm, distance recording in meters, constant-speed mode, image zoom, and report generation. | |
| Product weight | robot body 2.4 kg, cable reel 7.2 kg | |
| Product dimensions | robot body 295 × 75 × 70 mm; cable reel 440 × 450 × 360 mm; | |
| Language support | Chinese/English, switches with the system language. | |
| Storage environment | store in a normal-temperature, dry, and cool place. | |



FAQ
1. What pipe diameter is the PQWT PQ325A designed for?
The PQWT PQ325A is designed for pipes with an inner diameter of 110 mm or larger.
2. What is the maximum inspection distance?
The system supports a cable length of up to 100 m. The actual inspection range depends on the operating conditions and equipment configuration.
3. What camera resolution does the robot use?
The robot is equipped with a 2-megapixel camera that provides 1080P image resolution.
4. Can the robot be used for drainage pipe inspection?
The PQ325A series is designed for pipeline inspection and maintenance, including drainage-related applications. Suitability depends on pipe conditions, diameter and operating environment.
5. What is the difference between PQ325A and PQ325A+?
The current product information indicates that the cable reel uses manual winding on the PQ325A and electric winding on the PQ325A+. Confirm the final configuration with the technical team before publishing.










