Epoxy Powder Coating for Fusion Bonded 3PE Anti-Corrosion Coating of Pipelines
We are a manufacturer based in China, specializing in high-quality Epoxy Powder Coating for Fusion Bonded 3PE Anti-Corrosion Coating of Pipelines for industrial clients worldwide. Technical support and custom formulation available.
Category：Application industries | Brand：MT
Introduction
Product Characteristics
Fusion bonded 3PE consists of an epoxy powder primer layer, adhesive layer, and polyethylene layer. All three layers are applied by spraying or dipping processes. After coating, there is no obvious interface between the three layers, providing stronger peel strength compared with traditional wrapped 3PE coatings. It also overcomes the problems of poor adhesion at weld seams and reduced coating thickness in traditional wrapped 3PE systems, significantly reducing the risk of 3PE coating anti-corrosion failure.
· Outstanding resistance to cathodic disbondment;
· Excellent storage stability;
· The three layers are fused into an integrated structure with extremely strong peel resistance;
· Outstanding resistance to cathodic disbondment;
· Excellent storage stability;
· Complies with GB/T 23257 Polyethylene Anticorrosive Coating for Buried Steel Pipelines;
· Complies with CSA Z245.20 Series-18 Plant-applied External Coatings for Steel Pipe;
· Complies with DIN 30670 Polyethylene Coatings for Steel Pipes and Fittings;
· Complies with ISO 21809-1 Petroleum and Natural Gas Industries — External Coatings for Buried or Submerged Pipelines Used in Pipeline Transportation Systems — Part 1: Polyolefin Coatings (3-Layer PE and 3-Layer PP).
Performance Specifications of Epoxy Powder
|
Item |
Test Method |
Performance Specification |
| Curing Time (min) 230℃ | GB/T 23257 | ≤5; customized according to requirements |
| Curing Time (min) 250℃ | GB/T 23257 | ≤3; customized according to requirements |
| Gel Time (s) 230℃ | GB/T 6554 | 12~60; customized according to requirements |
| Density (g/cm³) | GB/T 4472 | 1.3~1.5 |
| Particle Size Distribution (%) 150μm | GB/T 6554 | ≤3 |
| Particle Size Distribution (%) 250μm | GB/T 6554 | ≤0.2 |
| Non-volatile Content (%) 105℃ | GB/T 6554 | ≥99.4 |
Performance Specifications of Epoxy Coating
|
Item |
Test Method |
Performance Specification |
| Cathodic Disbondment Resistance (mm) 65℃, -1.5V, 48h | GB/T 23257 | ≤5 |
| Cathodic Disbondment Resistance (mm) 65℃, -1.5V, 30d | GB/T 23257 | ≤15 |
| Bending Resistance -20℃, 2.5° | GB/T 23257 | No cracks |
| Adhesion (Grade) 75℃, 48h | GB/T 23257 | 1 |
Application Areas
Suitable for 3PE anti-corrosion coating applications on various pipelines, including long-distance transmission pipelines, water supply pipelines, and other pipeline systems.
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