Dual-Layer Epoxy Anti-Corrosion Powder Coating (External Coating)
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.
If you're ready to take the next step or Request Free Samples, Leave your message below and we’ll reply soon. 20+ years of chemical manufacturing & export experience, a partner you can trust.
Отправить запрос, связаться с поставщиком
Другие товары поставщика
 |
Tricresyl phosphate (TCP) | Product Details Tricresylphosphate (TCP) Alias: Tricresyl Phosphate Tris (3-methylphenyl) Phosphate Plasticizer TCP Molecular Fo... |
 |
High-Temperature Resistant Powder Coating | Product Introduction:High-temperature resistant coatings are typically defined as those whose films do not change color, do not flake off, and can ... |
 |
Powder coating for elevators | Product description Powder coating for elevators has excellent decorative appearance, and the coating film has excellent corrosion resistance, tou... |
 |
Low Density Polyethylene (LDPE) Powder Coating | We provide a complete range of Polyethylene (PE) Powder Coatings, manufactured in China and shipped globally to serve B2B clients across various se... |
 |
Epoxy Anti-Corrosion Powder Coating for Coal Mine Gas Drainage Pipes | Product Introduction: This product is formulated using phenolic epoxy resin and incorporates self-developed conductive polymers and conductive mat... |
Похожие товары
 |
5.4,4'-Oxydiphenol CAS 1965-09-9 | Продавец: Yufeng International Group Co., Ltd | Product Name: 4,4'-Oxydiphenol Synonyms: 4,4'-Dihydroxydiphenyl ether 4,4'-Oxydiphenol Bis(4-... |
 |
1,1,2,2-Tetrachloroethane CAS 79-34-5 | Продавец: Yufeng International Group Co., Ltd | Product Name: 1, 1, 2, 2-Tetrachloroethane Synonyms: 79-34-5 s-Tetrachloroethane Acetylene te... |
 |
3.Chlorotrifluoroethylene (CTFE) CAS 79-38-9 | Продавец: Yufeng International Group Co., Ltd | Synonyms: CHLOROTRIFLUOROETHYLENE 79-38-9 CTFE Chlorotrifluoroethene 1-Chloro-1,2,... |
 |
2.1,1,2-Trichloroethane CAS 79-00-5 | Продавец: Yufeng International Group Co., Ltd | Product Name: 1, 1，2-Trichloroethane CAS: 79-00-5 Synonyms:79-00-5, Vinyltrichloride, beta-... |
 |
1.1,1,2,2-Tetrachloroethane CAS 79-34-5 | Продавец: Yufeng International Group Co., Ltd | Product Description Product Name: 1, 1, 2, 2-Tetrachloroethane Synonyms: 79-34-5 s-Te... |
