(DPS) Dual-Layer Epoxy Anti-Corrosion Powder Coating
Getaquote
whats/app：+86 132 6275 2056
WEB: std-coatings.com
Product Introduction:
This dual-layer epoxy powder coating system is carefully formulated using special epoxy resins and functional curing agents. The base layer, like other epoxy anti-corrosion powder coatings, offers excellent anti-corrosion properties. The outer layer, while maintaining anti-corrosion properties, enhances protective performance. Compared to a three-layer PE structure, it offers a lower comprehensive anti-corrosion cost.
Product Usage:
Suitable for complex anti-corrosion environments, especially pipelines crossing through mountainous, river, and hilly areas.
Product Features:
Excellent adhesion between the base material and the epoxy layers.
Strong resistance to permeation and corrosion with high curing completion rate.
High hardness of the outer coating, dense coating, scratch-resistant, and good resistance to plant root penetration.
Excellent high-temperature cathodic disbondment resistance and superior mechanical properties.
Powder Performance:
Powder Coating Performance Parameters
| Test Item | Technical Specification | Remarks |
|---|---|---|
| Appearance | Uniform color, no lumps | Visual inspection |
| Particle Size Distribution | Residuals ≤4.0 at 150um, ≤0.2 at 250um | Q/CNPC 38-2002 Appendix C |
| Volatile Content (%) | ≤0.6 | Q/CNPC 38-2002 Appendix B |
| Gellation Time at 205±3°C (s) | ≥12 | Q/CNPC 38-2002 Appendix A |
| Curing Time at 230°C (min) | ≤3 | SY/T 0315-2005 |
| Magnetic Substance Content (%) | ≤0.002 | GB/T 6570 |
Cured Powder Coating Performance Parameters
| Test Item | Technical Specification | Remarks |
|---|---|---|
| Appearance | Smooth, uniform color, no bubbles, no cracks, allows slight orange peel | Visual inspection |
| Adhesion (Grade) | 1-2 | SY/T 0315-2005 |
| Negative Electrode at 24h (mm) | ≤6.5 | SY/T 0315-2005 |
| Negative Electrode at 28d (mm) | ≤8 | SY/T 0315-2005 |
| Cross-sectional Crack Rate | 1-4 | SY/T 0315-2005 |
| Coating Surface Porosity Rate | 1-4 | SY/T 0315-2005 |
| Bending Resistance (3°) | No cracks | SY/T 0315-2005 |
| Volume Resistivity | ≤1*10¹³ | GB/T 1410 |
| Electric Strength (MV/m) | ≥30 | GB/T 1408.1 |
| Impact Resistance (1.5J at -30°) | No leakage points | SY/T 0315-2005 |
| Chemical Resistance | Qualified | SY/T 0315-2005 |
| Wear Resistance (Abrasion Method) | ≤3 | SY/T 0315-2005 |
| Salt Spray Test (1000h) | Coating shows no change | GB/T 1771-1991 |
Execution Standard:
Q/CNPC 38-2002 “Technical Specification for Double Layer Fusion Bonded Epoxy Powder Coating on Steel Pipes”
Curing Conditions:
| Property | Specification | Remarks |
|---|---|---|
| Temperature | 200-230°C for 3-1.5 minutes | Medium-frequency heating recommended |
Application Parameters:
| Parameter | Specification | Notes |
|---|---|---|
| Applicable Equipment | Frictional charging spray, corona electrostatic spray | |
| Film Thickness | 250-500um | Adjustable according to workpiece requirements |
Storage Period:
The product can be stored for 6 months in dry conditions below 30°C.
The used coating must be re-sealed immediately to prevent moisture absorption affecting performance.
Packaging: 20kg paper boxes lined with plastic bags.
在线联系供应商
Other supplier products
 |
Pure polyester weather-resistant powder coating | Product model OWP Product characteristics Excellent weather resistance and mechanical properties Product application Used for surface coating ... |
 |
Automotive components powder coatings MT-A1230/MT-EN155G /MT-PE 55-9403 | WA：+86 132 6275 2056 WEB: std-coatings.com Product Description MT-A1230 series covers a wide range of powder coatings specifically designed to... |
 |
Sand-Textured Wood Grain Powder | Getaquote whats/app：+86 132 6275 2056 WEB: std-coatings.com Introduction Sand-textured wood grain powder is a specialized powder coating designed t... |
 |
Villa Elevator Powder Coating | Getaquote whats/app：+86 132 6275 2056 WEB: std-coatings.com Aesthetic and Functional Excellence: The coating provides an aesthetically pleasing ... |
 |
Sand Texture Powder Coatings | Getaquote whats/app：+86 132 6275 2056 WEB: std-coatings.com Introduction Sand texture powder coatings are a specialized type of powder that for... |
Same products
 |
Metallic flat high gloss MT-049/98010 | 卖方: Standard International Group (HK) Limited | Getaquote whats/app：+86 132 6275 2056 WEB: std-coatings.com Introduction No. MT-049/98010 Co... |
 |
Pure epoxy powder coating | 卖方: Standard International Group (HK) Limited | Getaquote whats/app：+86 132 6275 2056 WEB: std-coatings.com Product model CH Product characterist... |
 |
Epoxy polyester powder coating | 卖方: Standard International Group (HK) Limited | Getaquote whats/app：+86 132 6275 2056 WEB: std-coatings.com Product model GA, SF, FX, etc. Produc... |
 |
Pure polyester weather-resistant powder coating Factory Supplier | 卖方: Standard International Group (HK) Limited | Getaquote whats/app：+86 132 6275 2056 WEB: std-coatings.com Product model OWP Product characteris... |
 |
Metallic flat semi-gloss Powder Coating MT-049/97003 | 卖方: Standard International Group (HK) Limited | Getaquote whats/app：+86 132 6275 2056 WEB: std-coatings.com Introduction No. MT-049/97003 Co... |
