Double Layer External Fusion Bonded Epoxy Powder Coating for Pipeline
We are a manufacturer based in China. We specialize in providing high-quality Double Layer External Fusion Bonded Epoxy Powder Coating for Pipeline for industrial clients across various sectors. Whether you need chemicals consultation or technical support, our team is here to help.
Category：Application industries Own Brand：MT /MOQ:100KG /From China/ B2B only.
Introduction
Product Characteristics
· Superior anti-corrosion performance compared with single-layer coatings;
· The double-layer structure is tightly bonded and fused into one integrated coating, with different layers focusing on different protective functions;
· Excellent abrasion resistance and scratch resistance;
· Sand-textured surface layer with excellent anti-slip performance;
· Outstanding chemical corrosion resistance;
· Suitable for crossing and mountainous construction conditions;
· A highly efficient anti-corrosion system fully compatible with cathodic protection systems without barriers;
· High cost-performance ratio, long service life, and low maintenance cost;
· Complies with GB/T 39636 Technical Specification for External Fusion Bonded Epoxy Powder Coating of Steel Pipelines;
· Complies with SY/T 0315 Technical Specification for External Fusion Bonded Epoxy Powder Coating of Steel Pipelines;
· Complies with CSA Z245.20 Plant-applied External Fusion Bond Epoxy Coating for Steel Pipe.
Performance Specifications of Epoxy Powder
|
Item |
Test Method |
Performance Specification (Primer Layer) |
Performance Specification (Top Layer) |
| Curing Time (min) 230℃ | GB/T 39636 | ≤2; customized according to requirements | ≤1.5; customized according to requirements |
| Gel Time (s) 230℃ | GB/T 39636 | ≤30; customized according to requirements | ≤20; customized according to requirements |
| Thermal Property △H (J/g) | — | ≥45; customized according to requirements | ≥45; customized according to requirements |
| Thermal Property Tg2 (℃) | GB/T 39636 | ≥40℃ above maximum operating temperature; can be designed from 95℃ to 140℃ | ≥40℃ above maximum operating temperature; can be designed from 95℃ to 140℃ |
| Density (g/cm³) | GB/T 39636 | 1.3~1.5 | 1.4~1.8 |
| Particle Size Distribution (%) 150μm | GB/T 21782.1 | ≤3 | ≤3 |
| Particle Size Distribution (%) 250μm | GB/T 21782.1 | ≤0.2 | ≤0.2 |
| Magnetic Material Content (%) | JB/T 6570 | ≤0.002 | ≤0.002 |
| Volatile Content (%) | GB/T 39636 | ≤0.6 | ≤0.6 |
Performance Specifications of Epoxy Coating
|
Item |
Test Method |
Performance Specification |
| Cathodic Disbondment Resistance (mm) 65℃, -1.5V, 48h | SY/T 4113.3 | ≤5 |
| Cathodic Disbondment Resistance (mm) 65℃, -1.5V, 28d | SY/T 4113.3 | ≤15 |
| Bending Resistance Standard Grade -30℃, 1.5° | SY/T 4113.5 | No cracks |
| Bending Resistance Reinforced Grade -30℃, 2° | SY/T 4113.5 | No cracks |
| Impact Resistance Standard Grade 10J, 20℃ | GB/T 39636 | No pinholes |
| Impact Resistance Reinforced Grade 15J, 20℃ | GB/T 39636 | No pinholes |
| Porosity (Grade) Cross Section | GB/T 39636 | 1~3 |
| Porosity (Grade) Bonding Surface | GB/T 39636 | 1~3 |
| Scratch Resistance Standard Grade 20℃, 30kg | SY/T 4113.1 | ≤350μm, no pinholes |
| Scratch Resistance Reinforced Grade 20℃, 50kg | SY/T 4113.1 | ≤500μm, no pinholes |
| Adhesion (Grade) 75℃, 24h | GB/T 39636 | 1~2 |
| Adhesion (Grade) 75℃, 28d | GB/T 39636 | 1~3 |
| Dielectric Strength (MV/m) | GB/T 1408.1 | ≥30 |
| Volume Resistivity (Ω·m) | GB/T 31838.2 | ≥1×10¹² |
| Cathodic Disbondment Resistance After 1.5° Bending 20℃, -1.5V, 28d | GB/T 39636 | No cracks |
| Chemical Corrosion Resistance 20℃, 90d | SY/T 4113.9 | No change |
Application Areas
Suitable for pipelines exposed to severe mechanical damage environments such as crossings, sand and gravel impact areas, and other harsh construction conditions.
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