Double Layer External Fusion Bonded Epoxy Powder Coating for Pipeline
We are a manufacturer based in China, specializing in high-quality Double Layer External Fusion Bonded Epoxy Powder Coating for Pipeline for industrial clients worldwide. Technical support and custom formulation available.
Category：Application industries | Brand：MT
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.
Inquiry
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