RD-3505 Portable X-ray Flaw Detector | 55mm Penetration NDT Machine for Heavy-Duty Tank & Pipeline Inspection
Product Introduction
The RD-3505 is a top-tier high-power portable industrial X-ray flaw detector developed by Hangzhou Huiwei NDT Equipment Co., Ltd., designed to meet the most stringent non-destructive testing (NDT) demands for thick-wall and large-scale industrial assets.
Building on Huiwei’s 30+ years of technological expertise, the RD-3505 series combines exceptional penetrating power, superior operational efficiency, and industry-leading stability. It features a robust 2.5:1 work-rest cycle, enabling continuous exposure for up to 15 minutes without the need for a 1:1 rest period—delivering a remarkable 50% increase in inspection efficiency. Weighing only 34kg (35kg for TH type), the generator strikes a perfect balance between heavy-duty performance and field portability.
Ideal for critical applications such as double-wall single-image inspection of spherical chemical storage tanks and large-diameter oil/gas pipelines, the RD-3505 series is available in both directional (RD-3505) and circumferential (RD-3505TH) configurations. With an industry-leading maximum penetration depth of 55mm in Q235 steel, this machine is the ultimate choice for high-precision NDT projects in energy, petrochemical, and heavy engineering industries.
Key Product Advantages
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Industry-Leading Penetration Power
Capable of penetrating up to 55mm Q235 steel (directional model) and 50mm (circumferential model), the RD-3505 easily handles ultra-thick-wall workpieces such as large storage tanks and high-pressure pipelines.
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2.5:1 High-Efficiency Cycle (50% Faster)
Supports up to 15 minutes of continuous single exposure with a 2.5:1 rest cycle. This eliminates downtime associated with traditional 1:1 cycle machines, drastically reducing inspection time and labor costs for large-scale projects.
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Ultra-Portable Heavy-Duty Design
Despite its powerful performance, the generator weighs only 34-35kg and features an exquisitely engineered compact structure, making it easy to transport and deploy in remote field sites, high-altitude construction zones, and tight industrial spaces.
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Dual Radiation Modes for Full-Scenario Coverage
- RD-3505 (Directional): Perfect for flat welds, plate structures, and thick-wall component inspection.
- RD-3505TH (Circumferential): Equipped with 25°×360° radiation, it enables one-time exposure for large-diameter pipeline double-wall single-image inspection, completing full-circle weld detection in a single shot.
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Exceptional Stability & Low Failure Rate
Field-proven to deliver consistent, high-quality imaging even in harsh on-site environments. Its low failure rate ensures minimal maintenance downtime, providing long-term reliability for critical project quality control.
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Optimized for Double-Wall Single-Image (DWSI) Technique
Specifically engineered to excel at DWSI inspection of spherical tanks and pipelines, significantly improving workflow efficiency and accuracy for oil & gas and petrochemical projects.
RD-3505 the technical parameters
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Project
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RD-3505
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input
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Input power
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Single-phase AC150-250V 50/60Hz
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Power supply capacity
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No less than 3.0 KVA
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output
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X - ray tube voltage
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170~ 350 KVp
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X ray tube current
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5mA
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mA Stability degree
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± 1%
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Ray tube
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Focal size
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2.5× 2.5
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X-ray irradiation range
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40±5°
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Ray generator
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working pressure
Cooling mode
Insulation way
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0.35MPa ~ 0.5Mpa
Anode ground connection radiator Strong wind cold
Gas insulation SF6
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Size
weight (kg)
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φ320×640
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34
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Maximum penetration
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Thickness steel A3(mm)
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55 mmFe(5 min)
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condition
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focal distance 600mm ,Agfa film,Double lead foil,Liquid temperature 22,Film density ≥1.5
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sensitivity
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superior 2%
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controller
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Size
weight
Circuit
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325×270×180
< 9(kg)
Automatic control and protection
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Environment
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working temperature relative humidity
Altitude
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-30°~ +40°
Not more than 85%
Not higher 1500m
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methods
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fully automatic 4:1 Work and rest,Longest continuous exposure time 15mins
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Key Features of RD Series X-ray Flaw Detectors
1. Portable & User-Friendly:Designed for lightweight mobility, ensuring easy transportation and straightforward on-site operation.
2. Enhanced Radiation Safety:
◦ Includes a delay function to allow operators to retreat from hazardous areas before activation.
◦ Equipped with a comprehensive protection system (over-KV, low/mA, over-temperature) with audible-visual alarms.
3. Intelligent Thermal Management:
◦ Built-in over-temperature protection for the X-ray generator.
◦ Maintains a 1:1 radiation-to-cooling time ratio for consistent performance and longevity.
4. Robust Field Adaptability:
◦ Superior anti-interference capability, supported by a motor system for reliable operation in off-grid environments.
◦ Automatically performs hardware and software self-checks upon startup to ensure readiness.
5. Operator-Centric Design:
◦ Exposure parameters adjustable via intuitive keypad controls; gradual high-voltage ramp protects the generator.
◦ Durable construction enables convenient local operation and simplifies maintenance procedures.
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