Dual-Layer Epoxy Anti-Corrosion Powder Coating -best powder coat for outdoor use
Product Introduction:
This dual-layer epoxy powder coating is formulated using multiple types of epoxy resins and functional curing agents. The base layer, like other epoxy anti-corrosion coatings, offers excellent corrosion resistance. The outer layer not only maintains corrosion protection but also enhances the protective properties, making it suitable for highly demanding anti-corrosion environments, especially for pipelines crossing mountainous areas, rivers, and hilly regions.
Product Features:
Excellent adhesion between the base layer and the substrate, as well as between the epoxy layers.
Strong resistance to permeation and corrosion.
The outer layer has high hardness and density, is scratch-resistant, and provides good resistance to plant root penetration.
The coating has excellent resistance to high-temperature cathodic disbondment.
Powder Coating Performance Parameters
| Item | Quality Indicator | Test Method |
|---|---|---|
| Appearance | Uniform color, no lumps | Visual inspection |
| Volatile Content (%) | ≤ 0.6 | Q/CNPC 38-2002 Appendix B |
| Curing Time (230°C) (min) | ≤ 3 | SY/T 0315-2005 |
| Magnetic Substance Content (%) | ≤ 0.002 | GB/T 6570 |
Cured Powder Coating Performance Parameters
| No. | Test Item | Technical Indicator | Test Method |
|---|---|---|---|
| 1 | Appearance | Smooth, uniform color, no bubbles, cracks; slight orange peel allowed | Visual inspection |
| 2 | Adhesion (Grade) (24h or 48h) | 1-2 | SY/T 0315-2005 |
| 3 | Cathodic Disbondment Resistance (24h or 48h) (mm) | ≤ 6 | SY/T 0315-2005 |
| Cathodic Disbondment Resistance (28d) (mm) | ≤ 8 | SY/T 0315-2005 | |
| Cross-Section Porosity of Base Layer | 1-4 | SY/T 0315-2005 | |
| Bonding Surface Porosity of Base Layer | 1-4 | SY/T 0315-2005 | |
| 4 | Flexibility (2°) (0° or -30°) (Ordinary Grade) | No cracks | Q/CNPC 38-2002 Appendix D |
| Flexibility (1.5°) (0° or -30°) (Enhanced Grade) | No cracks | Q/CNPC 38-2002 Appendix D | |
| Impact Resistance (10J) (Ordinary Grade) | No pinholes | Q/CNPC 38-2002 Appendix E | |
| Impact Resistance (15J) (Enhanced Grade) | No pinholes | Q/CNPC 38-2002 Appendix E | |
| Scratch Resistance (30Kg) (Ordinary Grade) | Scratch depth ≤ 350 µm, no leakage | Q/CNPC 38-2002 Appendix F | |
| 8 | Scratch Resistance (50Kg) (Enhanced Grade) | Scratch depth ≤ 500 µm, no leakage | Q/CNPC 38-2002 Appendix F |
Compliance Standard: Q/CNPC 38-2002
Application Fields:
Complex anti-corrosion environments, especially pipelines crossing mountainous areas, rivers, and hilly regions.
Application Process:
Electrostatic spraying.
Precautions:
The steel pipe surface should be free of oil and moisture; the surface treatment quality should reach Sa2 1/2 level (GB/T 8923); the anchor pattern depth should be 50-90 mm; dust and abrasives on the steel pipe surface should be blown clean.
The product should be stored in a well-ventilated, dry indoor environment with a temperature below 30°C, away from heat sources, corrosive chemicals, and chemical solvents, and protected from strong light exposure; the stacking height should not exceed four layers; avoid long-term pressure, ensure the packaging box is sealed to prevent caking and moisture, which can affect fluidization performance.
在线联系供应商
Other supplier products
 |
Functional Powder Coatings for Industry | Our Functional Powder Coatings go beyond aesthetics—built to endure harsh environments, resist damage, and meet specific technical standards.... |
 |
Architectural aluminum powder coating MT-D35 | Product Description MT-D35 is a series of durable powder coatings specially formulated TGIC- free for the use on architectural aluminum which conf... |
 |
Thermosetting Decorative Powder Coating | I. Product Introduction Thermosetting decorative powder coating is a new generation of metal surface treatment technology. It forms a wear-resista... |
 |
Matt Powder Coating | Introduction As a professional powder coating manufacturer in China, we specialize in producing high-quality Matt Powder Coatings with customized ... |
 |
Leaf Effect Powder Coatings | Leaf vein effect powder coatings have garnered widespread attention in both the industry and among consumers as a new type of decorative coating. I... |
Same products
 |
Sucralose | 卖方: Shanghai Yifu Food Ingredients Co., Ltd | Thermal properties of SucraloseMelting point / Decomposition point: Approximately 125°C (deco... |
 |
High quality Sucralose | 卖方: Shanghai Yifu Food Ingredients Co., Ltd | Safety Information for SucraloseDangerous Goods Mark: XiDangerous Goods Classification Code: 36/3... |
 |
Sucralose | 卖方: Shanghai Yifu Food Ingredients Co., Ltd | Sucralose is widely used in processed foods such as beverages, chewing gum, dairy products, dried... |
 |
Sucralose | 卖方: Shanghai Yifu Food Ingredients Co., Ltd | Sucralose is a calorie-free, highly sweetening agent substance derived from sucrose. It is in the... |
 |
Sucralose | 卖方: Shanghai Yifu Food Ingredients Co., Ltd | Sucralose is also known as Trisodium Phosphate. It is a powerful food sweetener, with the trade n... |
