(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
 |
Gasoline stripper inhibitor STD-20 | Gasoline stripper inhibitor STD-20 has the functions of anti-oxidation, anti-polymerization, cleaning and dispersing. This additive can effectively... |
 |
Blue series powder coating | Getaquote whats/app：+86 132 6275 2056 WEB: std-coatings.com Light blue silver powder coating MT-4116A Silver blue powder coating MT-PMA0002 |
 |
Polyester based powder coating MT-OA010G White | Product Description MT-OA010G is a polyester based powder coating, formulated without TGIC. Powder Properties Chemical type Polyester TGI... |
 |
Yellow powder coating | Getaquote whats/app：+86 132 6275 2056 WEB: std-coatings.com MT-3042 Bright gold MT-3040 Red gold MT-3039 Champagne gold MT-3038 Red... |
 |
Ultra flat thin powder coating | Application areas: Aluminum doors and windows curtains, automotive field, household appliances More excellent performance Leveling flatness comp... |
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... |
