(DPS) Dual-Layer Epoxy Anti-Corrosion Powder Coating
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.
Send product request
Other supplier products
 |
Metallic matte MT-019/94027 | Introduction No. MT-019/94027 Color Metallic color Surface Metallic matte System Weather-resistant polyester Sco... |
 |
Soft Starry Grey powder coating | Product Features With a special skin feel formula, the surface of the coating after powder solidification has a touch similar to that of the skin,... |
 |
Blue Sand Texture Powder Coating | What is Powder Coating? Powdercoating is a new type of 100% solid powder coating which does not contain solvents. With no solvent, no pollution, e... |
 |
Epoxy Anti-Corrosion Powder Coating for Firefighting Steel Pipes | Surface Finish Options Overview Product Introduction: This product is formulated using linear phenolic epoxy resin, polyurethane-modified... |
 |
Flat high gloss MT-049/7B666 | Introduction No. MT-049/7B666 Color White Surface Flat high gloss System Polyester Scope of application Lightin... |
Same products
 |
High Concentration Plastic Color Masterbatch Factory Direct Supply | Seller: 861445 | We are a professional color masterbatch manufacturer with years of R&D experience in plastic ... |
 |
Acid Ink Blue G Factory | Seller: TIANJIN LEADING IMPORT & EXPORT CO., LTD | Acid Ink Blue G Factory 【Application of Acid Ink Blue G 】 mainly used for making blue or ... |
 |
Acid Black ATT Factory | Seller: TIANJIN LEADING IMPORT & EXPORT CO., LTD | Acid Black ATT Factory 【What’s Acid Black ATT】 is made of acid black 10B and acid o... |
 |
Acid Black 10B Factory | Seller: TIANJIN LEADING IMPORT & EXPORT CO., LTD | Acid Black 10B Factory is mainly suitable for dyeing and printing wool ,silk and nylon fabri... |
 |
Sulphur Dyes | Seller: TIANJIN LEADING IMPORT & EXPORT CO., LTD | Sulphur Dyes BuyDye supplies a range of sulphur dyes for cotton-based textile dyeing, includ... |
