mankhwala 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.
Zambiri Zamalonda:
Excellent adhesion between the base layer and the substrate, as well as between the epoxy layers.
Kukana kwamphamvu kwa permeation ndi dzimbiri.
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
| katunduyo | Quality Indicator | Njira mayeso |
|---|---|---|
| Maonekedwe | Uniform mtundu, palibe zotupa | Kuyendera kowoneka |
| Zosasinthika (%) | ≤ 0.6 | Q/CNPC 38-2002 Zowonjezera B |
| Curing Time (230°C) (min) | ≤ 3 | SY/T 0315-2005 |
| Zomwe Zili ndi Magnetic (%) | ≤ 0.002 | GB / T 6570 |
Magwiridwe Ogwira Ntchito Powder Powder
| No. | Chiyeso | Chizindikiro chazamisiri | Njira mayeso |
|---|---|---|---|
| 1 | Maonekedwe | Smooth, uniform color, no bubbles, cracks; slight orange peel allowed | Kuyendera kowoneka |
| 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) | Palibe ming'alu | Q/CNPC 38-2002 Appendix D |
| Flexibility (1.5°) (0° or -30°) (Enhanced Grade) | Palibe ming'alu | 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 |
Muyezo Wotsatira: Q/CNPC 38-2002
Masamba Othandizira:
Complex anti-corrosion environments, especially pipelines crossing mountainous areas, rivers, and hilly regions.
papempho:
Electrostatic spraying.
CHENJEZO:
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.
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