Polyurea Heavy Anti-Corrosion Spray Solution
Engineered for pipelines, bulk storage tanks, and marine steel structures. Delivering pulse-free 21 MPa hydraulic proportioning and 90-meter heated hose reach for pinhole-free seamless barrier protection.
Seamless Barrier Protection Against Severe Corrosive Environments
Critical infrastructure exposed to marine salt spray, acidic crude slurries, and buried electrochemical reactions requires protective coatings with zero pinholes and high crack-bridging capability. Conventional multi-coat paints suffer from lengthy cure times, micro-void porosity, and VOC off-gassing. Haifeng’s Polyurea Heavy Anti-Corrosion Spray Solution utilizes 100% solids, instant-curing polyurea formulations applied via synchronized hydraulic proportioning to create impermeable protective membranes in a single application.
Pulse-Free Volumetric Consistency
The opposed hydraulic drive maintains consistent 1:1 displacement even during stroke reversals, eliminating the volumetric errors that create tacky spots and pinhole porosity.
Zero-Solvent Field Atomization
Mechanically self-cleaning impingement guns mix fast-reacting components inside a miniature chamber without requiring solvent flushes, ensuring compliant operations in confined storage vessels.
Whether addressing 1,420 mm buried transmission pipelines or 50,000 m³ vertical petrochemical storage vessels, our complete equipment solutions ensure precise stoichiometric mixing and stable thermal delivery across challenging project environments.
Complete Surface Preparation and Spraying Process
A rigorous, field-proven sequence ensuring chemical bonding, correct film build, and verified membrane continuity.
Surface Preparation & Profile Profiling
Steel substrates are grit-blasted to achieve ISO 8501-1 Sa 2.5 cleanliness with an anchor profile of 50 to 80 µm, while concrete is mechanically ground and dust-evacuated.
Moisture-Barrier Primer Application
A dedicated low-viscosity, moisture-tolerant epoxy primer is applied to seal microscopic substrate capillaries, prevent outgassing, and enhance polyurea adhesion.
Proportional Chemical Conditioning & Heating
The polyurea A (Isocyanate) and B (Amine) streams are heated independently up to 65–75°C to balance fluid viscosities before entering high-pressure delivery lines.
Standard Engineering System Parameters
Reference technical envelope for Haifeng turnkey hydraulic polyurea spray equipment packages.
| Parameter | Value / Unit | Applicable Configuration / Conditions |
|---|---|---|
| Volumetric Dosing Ratio | 1:1 Fixed (Volumetric) | Dedicated double-acting hydraulic proportioner |
| Continuous Fluid Pressure | 15.0 to 21.0 MPa | Heavy corrosion protection and thick-film elastomeric applications |
| Maximum Spray Flow Rate | 2.0 to 10.0 kg/min | Continuous rate matching manual and automated robot guns |
| Operating Temperature Range | 50°C to 80°C | Multi-stage cast-aluminum block heaters with PID control |
| Max Heated Hose Run | 90 meters | Copper-mesh wrapped thermal jacket maintaining heat to scaffold levels |
| Substrate Adhesion Strength | Greater than 10.0 MPa (Steel) / 3.0 MPa (Concrete) | Pull-off adhesion test (ASTM D4541), failure within concrete |
Core Equipment for This Solution
The Haifeng package includes the hydraulic proportioner, heated hoses, mechanical-purge spray gun, feed pumps and agreed commissioning support. Rotating pipe-handling/spray fixtures are optional. Coating materials are supplied separately; blasting equipment and site power are customer interfaces.
Core Advantages of Haifeng Polyurea Systems
Engineering highlights designed to solve the common issues of pressure drop, hose freezing, and spray tip clogging.
Pinhole-Free Membrane Integrity
Constant hydraulic pressure delivery prevents air injection and stoichiometric drift, delivering defect-free spark-tested barriers.
Instant Gel for Vertical Build
15-second fast cure allows technicians to spray vertical and overhead walls up to 3.0 mm without sagging or run-off.
Exceptional Chemical Resilience
Fully reacted polyurea membranes withstand 10% sulfuric acid, crude salt slurries, and prolonged 5% NaCl salt-spray exposure.
All-Weather Field Adaptability
High-power primary heaters combined with insulated copper-mesh heated hoses permit cold-weather operation down to 5°C.
Related Project Draft
Review the project configuration described in the supplied brief. Project records and reported results require verification before public use.
Frequently Asked Questions
Find answers about Polyurea Heavy Anti-Corrosion Spray Solution, including material selection, equipment configuration and the information needed to plan a production line.
How does the hydraulic proportioner ensure a true 1:1 volumetric ratio?
Can polyurea be applied over concrete structures without blisters?
What safety protections are included for operation inside confined spaces?
How soon can a newly sprayed polyurea lining be returned to service?
Request a Protective Spraying Proposal
Submit your tank, pipeline, or structural project details to receive an equipment configuration proposal.
