RD-G300D Directional 300kV High Frequency DC X Ray Flaw Detector 55mm Steel Penetration for Portable NDT Radiography
RD-G300D — Directional 300kV High Frequency DC X Ray Flaw Detector
55mm steel penetration • up to 30-minute exposures • 30kg tube head • DR-ready — built for global NDT inspection companies
Engineered for Inspection Companies That Bill by the Shot
Third-party NDT service providers win projects on throughput, field reliability and cost per radiograph. RD-G300D was designed on all three. Its high-frequency DC constant-voltage generator keeps output ripple within ±1%, producing stable 30-300kV exposures with short exposure times — fewer retakes, sharper films, faster job completion on site.
The directional tube head radiates a 45°±5° beam and penetrates 75mm of steel (600mm FFD, 5 min, density ≥1.5) — enough for girth welds, storage tank seams and pressure vessel joints. Each exposure can run up to 30 minutes with a built-in 4:1 work-rest manager and full over-temperature protection, so the unit watches its own duty cycle while your crew keeps working.
Key Features
| High-Frequency DC Output Ripple ±1%, stable kV and mA, short exposure time, high repeatability |
75mm Steel Penetration 300kV directional beam for thick-wall weld and vessel inspection |
| 30-Minute Continuous Exposure 4:1 duty manager with automatic rest and over-temperature protection |
Field-Portable Design SF6-insulated tube head only 30kg, controller 11kg — easy rigging on site |
| Generator & DR Compatible Strong anti-fluctuation design runs on field generators; RS485 sync to DR systems |
Digital Smart Control Auto conditioning, delayed exposure, exposure records, fault codes with voice & LED alerts |
| Complete Safety Protections Over/under voltage & current, over-temperature, gas pressure & door interlocks, grounded anode |
Proven Technology 10 patents, 6-year R&D program, digital after-sales service with per-unit archives |
Project Track Record
HUIWEI X-ray systems are trusted on critical energy infrastructure projects, including:
 PipeChina National Pipeline Network field weld radiography on long-distance oil & gas pipelines |
 Asian Games Zero-Carbon Methanol Pipeline pipeline safety inspection for the main torch fuel supply system |
Technical Parameters
| Product Type | Portable high frequency DC X ray flaw detector, directional |
| Technology | High frequency DC constant voltage, ripple +/-1% |
| Tube Voltage Range | 30-300 kVp adjustable |
| Tube Current | 1-3 mA adjustable |
| Focal Spot | 3.0 x 3.0 mm |
| Radiation Angle | 45 +/-5 deg (directional) |
| Max Steel Penetration | 75 mm (600mm FFD, 5 min exposure, density >=1.5) |
| Image Sensitivity | K <= 1.8% |
| Work Mode | 4:1 duty with automatic rest, max 30 min per exposure |
| Power Supply | AC 220V +/-10%, 50Hz, 1.5 kVA (generator compatible) |
| Insulation | SF6 gas insulated, 0.35-0.5 MPa at 20 deg C |
| Cooling | Forced air cooling, anode grounded |
| Tube Head Size / Weight | Phi250 x 880 mm / 30 kg |
| Controller Size / Weight | 370 x 310 x 270 mm / 9 kg, microcomputer modular |
| Cables | 25 m control cable (10-core aviation connector) + 5 m power cable |
| Working Temperature | -10 to +50 deg C |
| DR Compatibility | RS485 sync with DR systems; cloud / mobile APP options |
| Protections | Over/under voltage and current, over-temperature, gas pressure interlock, auto conditioning |
| Application | Boiler, pipeline, pressure vessel, petrochemical, aerospace, automotive, shipbuilding, construction NDT |
| Warranty | 12 months |
Standard Configuration
| Item | Specification |
|---|---|
| X-ray tube head (RD-G300D) | SF6 insulated, 30kg, directional 45°±5° |
| Digital controller | 9kg, microcomputer control, LCD display |
| Control cable | 25 m, 10-core, aviation quick connector |
| Power cable | 5 m, 3-core, rubber tensile cable |
| Grounding cable & accessories | Included |
| Operator manual & quality certificate | CE / ISO 9001, factory test record |
| Export packaging | Reinforced plywood case with shock-proof foam |
Optional on request: delayed exposure timer, remote switch, DR flat panel detector, cloud / mobile APP monitoring, custom cable length.
After-Sales Service
| Warranty | 12 months from shipment; free repair or replacement of defective parts |
| Technical Support | Remote troubleshooting by experienced engineers via email / video call |
| Digital Service Records | Per-unit factory archives, repair & commissioning data, authenticity check — full lifecycle tracking |
| Training & Guidance | Operation manual, auto-conditioning guidance and online operator training support |
| Spare Parts Supply | Long-term availability: tube, controller boards, cables, connectors, cooling fan |
Delivery & Business Terms
| MOQ | 1 set (trial orders welcome) |
| Delivery Time | 7-15 working days for production; 2-4 working days if in stock |
| Supply Ability | 500 sets per month |
| Payment Terms | T/T, L/C, Western Union, MoneyGram |
| Packaging & Shipping | Standard export plywood case; sea or air freight |
About HUIWEI
Hangzhou Huiwei NDT Equipment Co., Ltd. (est. 1993) is a national high-tech enterprise specialized in portable industrial X-ray inspection equipment, with a 12,000 m² manufacturing base, joint R&D center with China Jiliang University and 31 patents & software copyrights. The RD-G series high-frequency DC X-ray flaw detector line itself carries 10 patents. HUIWEI systems are used by national oil & gas pipeline operators and major EPC contractors worldwide.
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