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Founded in 1997, Zhejiang Bolei Coatings Co., Ltd. is a subsidiary of Bolei Industrial Group, with multiple subsidiaries engaged in coatings manufacturing, construction services, new material development, and international trade.
As a professional paint manufacturer based in China, we specialize in anti-corrosion coatings, fireproof coatings, emulsion paints, epoxy floor paints, and JS waterproof paints, widely applied in both industrial and construction sectors.
With advanced production facilities, a strict quality control system, and a stable raw material supply chain, we deliver high-quality and cost-competitive coating products and engineering solutions to our clients worldwide.
Basic Features
As an anti-corrosion primer, it is suitable for various corrosive environments.
Excellent wear and impact resistance.
Excellent self-repairing properties.
Compatible with various Topcoats, including epoxy, polyurethane, chlorinated rubber, and one-component acrylic.
Contains no volatile organic compounds and is odorless.
Dries quickly and requires minimal re-coating.
Recommended Applications
It can be used as a general-purpose, high-performance anti-rust primer for bridges, storage tanks, pipelines, offshore engineering, port machinery, and other applications. It can also be used as a single, complete, long-lasting protective Coating for steel surfaces in moderately to severely corrosive environments and those prone to wear.
Surface Preparation
All surfaces to be painted must be clean, dry, and free of oil and other contaminants. Surfaces must be assessed and prepared in accordance with the international standard ISO 8504.
Cleanliness Level: Abrasive blasting to Sa 2.5 (ISO 8501-1:2007).
Roughness: 40-85 microns using a suitable abrasive (steel shot/angular sand).
Application Conditions
Ambient temperature: 5°C to 35°C. The substrate temperature must be at least 3°C above the dew point. Relative humidity must be less than 85%. Temperature and relative humidity measurements must be taken close to the substrate.
Product Compatibility
Primer: Water-based inorganic zinc-rich primer
Recommended subsequent Coatings: Epoxy high-build paint, epoxy micaceous iron paint, chlorinated rubber paint, vinyl chloride paint, polyurethane Topcoat, acrylic paint, polysiloxane Topcoat, fluorocarbon Topcoat, etc.
Storage
Storage must comply with national regulations. The recommended storage temperature is 15-25°C. Store in a dry and well-ventilated environment. Keep packaging tightly closed.
Protect the curing agent components from freezing. Shelf life: 12 months at room temperature.
Packaging Specifications: Component A (liquid): 10 kg/drum, Component B (zinc powder): 20 kg/drum.
Protect the curing agent components from freezing. Shelf life: 12 months at room temperature.
| Technical Specifications | |
| Color | Zinc Gray |
| Volume Solids (%) | 65 |
| Specific Gravity | 2.1 kg/L |
| Flash Point | Non-flammable |
| Volatile Organic Compounds Content | 0 |
| Water Resistance | Very Good |
| Abrasion Resistance | Excellent |
| Solvent Resistance | Excellent |
| Chemical Resistance | Excellent, pH range 6-10 |
| Film thickness and coating rate | |||
| Minimum | Maximum | Typical | |
| Dry Film Thickness (μm) | 50 | 100 | 75 |
| Wet Film Thickness (μm) | 80 | 160 | 120 |
| Theoretical Spreading Rate (m²/kg) | 6.1 | 3.0 | 4.1 |
| Construction Method | Spray: It is recommended to use a conventional spray or the HVLP method |
| Brush: Recommended for repair | |
| Construction Parameters | - |
| Mixing Ratio (by weight) | Component A: Component B = 10:20 |
| Mixing | Slowly add Component B (zinc powder) to Component A (liquid), stir slowly with a power stirrer until fully mixed, then filter through a 60-mesh sieve. It is recommended to stir continuously during construction to avoid paint sedimentation. |
| Pot Life at 25°C | 5 hours (shortens as temperature rises) |
| Thinner/Cleaner | Water, generally not exceeding 5% of the total paint volume |
| Guidelines for Spraying | - |
| Nozzle Pressure | 0.3 – 0.5 MPa (3 – 5kp/cm², 42 – 70 psi) |
| Nozzle Orifice | 1.08 – 1.8 mm (0.043 - 0.072") |
| Spray Fan Angle | 40 – 80° |
| Precautions | To ensure the daily cleaning of the painting system, improve production efficiency, and stabilize painting quality, it is recommended to use clean water to circulate and clean the entire spraying equipment system for several minutes before and after applying water-based inorganic zinc-rich paint. Moreover, during the entire construction period, a mechanical stirring device should be used for continuous stirring. |
| Drying Characteristics | ||||
| Substrate Temperature | 5°C | 10°C | 23°C | 40°C |
| Touch Dry | 1.5 hours | 30 mins | 15 mins | 5 mins |
| Hard Dry | 2 hours | 80 mins | 30 mins | 20 mins |
| Minimum Recoat Time | 12 hours | 7 hours | 4 hours | 2hours |
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