High-Performance Epoxy Primer – ISO 21809-3 Compliant for Pipeline Field Joints

Product Introduction

Our high-performance epoxy primer is a two-component, solvent-free epoxy system specifically engineered for pipeline field joint corrosion protection. Fully compliant with ISO 21809-3 requirements, it serves as the critical bonding layer in heat shrink sleeve systems, ensuring field joints achieve the same level of protection as the mainline coating.

Key Features & Benefits

• • ISO 21809-3 Compliant: Meets the stringent requirements of the international standard for field joint coatings, providing assurance of quality and performance.

  • Superior Adhesion: Bonds firmly to blast-cleaned steel and compatible factory coatings including PE, PP, and FBE.

  • Excellent Cathodic Disbondment Resistance: Protects against coating disbondment under cathodic protection, ensuring long-term integrity in buried and immersed conditions.

  • Fast Curing: Rapid cure enables quick overcoating with heat shrink sleeves, improving field installation efficiency.

  • High-Build Application: Recommended thickness of 150–500 μm can be achieved in a single application.

  • Solvent-Free: 100% volume solids formulation minimizes VOC emissions and eliminates solvent entrapment risks.

Key Characteristics

Typical Properties

System Integration

This primer is designed to work as an integrated component of heat shrink sleeve systems, compatible with common field joint coating configurations including three-layer PE and PP systems. When used with compatible shrink sleeves, the complete system meets the requirements for operating temperatures up to 100°C or higher depending on grade. The epoxy layer provides the critical bond between the steel substrate and the shrink sleeve adhesive, forming a durable, watertight corrosion protection structure for pipeline field joints