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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
Wide film-forming range;
Excellent corrosion protection;
Excellent fast-drying properties, allowing for quick overcoating;
Volatile organic matter content meets international standards.
Resistant to dry temperatures up to 140°C.
Recommended Applications
As a primer for supporting Coatings, it is suitable for steel structures in the offshore oil and gas, marine steel structures, bridges, wind power, petroleum, chemical, and construction industries. It can also be used as a Topcoat for special applications.
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 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
The substrate temperature must not fall below 5°C and must be at least 3°C above the air dew point. Temperature and relative humidity should be measured near the substrate. Good ventilation is often required in confined areas to ensure proper drying.
When applying the secondary Paint, the paint surface must be dry and free of contamination.
Product Compatibility
Primer: Epoxy zinc-rich primer or epoxy primer
Intermediate: Fast-drying epoxy intermediate
Subsequent Coatings: Chlorinated rubber paint, vinyl chloride paint, polyurethane Topcoat, acrylic paint, polysiloxane Topcoat, fluorocarbon Topcoat, etc.
Storage
Store in accordance with national regulations. The recommended storage temperature is 15-25°C. The storage environment should be dry and well-ventilated. Containers must be kept tightly closed. Shelf Life: 12 months at room temperature.
Packaging
Part A (base): 27 kg, Part B (curing agent): 4.5 kg.
| Technical Specifications | |
| Color | Gray |
| Volume Solids (%) | 75±2% |
| Specific Gravity | 1.6 kg/L |
| Flash Point | 35℃±2 (Closed Cup) |
| Gloss | Matt |
| Volatile Organic Compounds | 220 g/L |
| Recommended Dry Film Thickness | 75-250 μm |
| Flexibility | Good |
| Water Resistance | Good |
| Abrasion Resistance | Excellent |
| Solvent Resistance | Good |
| Film thickness and coating rate | |||
| Description | Minimum | Maximum | Typical |
| Dry Film Thickness (μm) | 75 | 250 | 125 |
| Wet Film Thickness (μm) | 100 | 335 | 170 |
| Theoretical Spreading Rate (m²/kg) | 6.2 | 1.8 | 3.7 |
| Construction Parameters |
|
| Application Method | Spraying: Use airless spraying or conventional spraying |
| Brushing: Recommended for touch-up. | |
| Mixing Ratio (by weight) | Component A: Component B = 6: 1 |
| Pot Life (23℃) | 2 hours (decreases as temperature rises) |
| Thinner/Cleaner | Special thinner |
| Guidelines for Airless Spraying | |
| Nozzle Pressure | 15 MPa |
| Nozzle Orifice | 0.38-0.69 mm |
| Thinner Addition Amount | Special thinner, the addition amount is generally 0-5% of the total paint quantity |
| Guidelines for Conventional Spraying | |
| Nozzle Pressure | 0.3-0.6 MPa |
| Nozzle Orifice | 1.8-2.2 mm |
| Thinner Addition Amount | Special thinner, the addition amount is generally 5-15% of the total paint quantity |
| Brushing and Rolling | |
| Thinner Addition Amount | Special thinner, the addition amount is generally 5-15% of the total paint quantity |
| Drying Characteristics | ||||||
| Substrate Temperature | -5℃ | 0℃ | 5℃ | 10℃ | 23℃ | 40℃ |
| Touch Dry | 7 hours | 90 minutes | 50 minutes | 20 minutes | 10 minutes | 4 minutes |
| Hard Dry | 24 hours | 5 hours | 3 hours | 2 hours | 1.5 hours | 40 minutes |
| Full Cure | 21 days | 15 days | 10 days | 7 days | 5 days | 2 days |
| Minimum Recoat Time | 24 hours | 5 hours | 3 hours | 2 hours | 1.5 hours | 40 minutes |
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