Diesel Polyurea Spray Machine | Bridge Steel Coating
Diesel-powered two-component spray equipment with heated delivery and configured elevation interfaces for a selected marine steel coating system.
Autonomous Heavy Coating for Offshore Bridges & Marine Steel
Diesel-powered two-component spray equipment with heated delivery and configured elevation interfaces for a selected marine steel coating system.
Diesel-powered two-component spray equipment with heated delivery and configured elevation interfaces for a selected marine steel coating system.
The package covers a diesel-powered hydraulic spray skid, heated hoses, the specified gun and pressure-relief interfaces, and controls. Enclosure and access-platform accessories are optional. Coating materials are supplied separately; blasting equipment and fuel are customer interfaces. Hazardous-area suitability, generator placement, load and delivery configuration require project-specific documentation.
Material Flow and Working Principle
Autonomous Power & Pneumatic Supply
The integrated diesel engine drives an onboard 40 kW generator and heavy screw compressor, providing autonomous three-phase electricity and clean dry compressed air without site umbilical lines.
High-Efficiency Instant Chemical Heating
Chemicals are pumped from 200 L drums through multi-stage cast-aluminum instant heaters, bringing components to 65–75°C to lower viscosities for high-pressure impingement.
High-Elevation Hydraulic Pumping
Heavy-duty hydraulic cylinders displace fluids at a fixed 1:1 volumetric ratio, maintaining 21 MPa pressure across 90-meter hose runs to reach bridge box girders.
High-Pressure Impingement Hot Spraying
Materials collide within the mechanical-purge spray gun at 120 m/s, instantly atomizing onto grit-blasted steel (Sa 2.5) to build a seamless 2.0 mm elastomeric protective barrier.
Auto-Relief Safety & Mechanical Purge
An automated pressure-dump valve vents fluid within 3 seconds if tip blockage occurs, while the gun's mechanical cleanout rod prevents internal curing without solvents.
Model and Technical Parameters
Configuration references from the supplied HF-BRG200-DSL brief. Pressure circuit designation, output, heating and hose capability require confirmation under the stated operating conditions. Coating properties and laboratory qualification belong to the selected material/substrate system and require original reports.
| Technical Parameter | HF-BRG200-DSL |
|---|---|
| Components | 2 Components (1:1 Fixed Volumetric Ratio) |
| Output Range (g/s) | 2.5 to 11.0 kg/min (Continuous spray output) |
| Mixing Ratio Range | 1:1 Fixed (Volumetric ratio) |
| Ratio Accuracy | ±1.0% (Under fluid pressure differential < 1.5 MPa) |
| Power Supply | Autonomous Diesel (40 kW, 380V 50Hz onboard generator) |
| Working Pressure | 16.0 to 21.0 MPa (Hydraulic fluid delivery lines); circuit designation to be confirmed |
| Tank Capacity (L) | Direct drum feed (Optional 100 L day tanks) |
| Weight | 2,800 kg (Complete diesel-hydraulic containerized skid) |
| Dimensions (L×W×H) | 3600 mm x 1800 mm x 2100 mm |
| Onboard Generator Output | 40 kW (Silent diesel generator set); Continuous duty cycle |
| Vertical Pumping Lift | Up to 60 meters (Heated hose vertical reach); Working pressure at 19 MPa |
| Primary Heaters Power | 18 kW (9 kW per component); Inline fluid heating blocks |
| Marine Salt Spray Resistance | > 8,000 hours (Coating system test); ASTM B117 neutral salt spray; supplied coating-system result pending original specimen and test records |
Key Equipment Features
The package covers a diesel-powered hydraulic spray skid, heated hoses, the specified gun and pressure-relief interfaces, and controls. Enclosure and access-platform accessories are optional. Coating materials are supplied separately; blasting equipment and fuel are customer interfaces. Hazardous-area suitability, generator placement, load and delivery configuration require project-specific documentation.
Onboard Power Interface
The specified diesel/generator package is matched to the complete electrical load and site placement.
Elevated Delivery Configuration
Total hose length is separate from vertical lift; gun-end pressure and temperature require operating records.
Configured Pressure Controls
Relief, hoses and controls are selected and verified as a complete system; response claims require original tests.
Material-System Qualification
Salt-spray and UV performance belong to the selected primer, membrane and topcoat system, not the spray machine alone.
