Epoxy
Holding Primer
Epoxy Holding Primer is a premium two-component, solvent-based, amine-cured epoxy holding primer developed to provide temporary corrosion protection for blast-cleaned steel during fabrication, storage, transportation, and construction. Specifically formulated as a weldable prefabrication primer, it protects prepared steel surfaces while allowing welding operations to be carried out without removing the coating. The primer also provides effective cutback protection on external and internal pipe ends until welding has been completed and the final protective coating system is applied. Its excellent adhesion, rapid drying characteristics, and extended overcoating window make it an ideal solution for fabrication yards, structural steel manufacturers, shipbuilding, pipeline construction, and industrial maintenance projects.
Features & Benefits
- Two-component amine-cured epoxy technology
- Solvent-based weldable holding primer
- Designed for blast-cleaned steel
- Excellent temporary corrosion protection
- Weldable prefabrication primer
- Excellent adhesion to prepared steel
- Thin-film anti-corrosive protection
- Provides temporary chemical resistance
- Ideal for fabricated steel components
- Suitable for pipe cutback protection
- Fast drying
- Easy brush, roller, or spray application
- Can be overcoated for up to three months under suitable conditions
- Excellent compatibility with high-performance coating systems
- Reduces corrosion during fabrication and storage
- Suitable for workshop and site applications
- Continuous dry temperature resistance up to 100°C
- Cost-effective protection during project delays
- Ideal for industrial fabrication and maintenance projects
Intended Uses
Epoxy Holding Primer has been developed to protect newly blast-cleaned steel from flash rusting and atmospheric corrosion before the application of a complete protective coating system. It is particularly suited to steel fabrication facilities where structural components, fabricated assemblies, tanks, pipework, and steel sections may remain exposed for extended periods before final painting. As a weldable prefabrication primer, it allows fabrication work to continue efficiently without compromising corrosion protection, making it an excellent choice for structural steel manufacturers, shipyards, pipeline contractors, mining infrastructure projects, and heavy engineering applications. It is also widely used to protect pipe ends after coating until welding and field joint repairs are completed.
Typical Applications:
- Structural steel fabrication
- Steel fabrication workshops
- Pipe fabrication
- Pipeline construction
- Pipe cutback protection
- Steel plate fabrication
- Pressure vessels
- Storage tanks
- Mining structures
- Conveyor systems
- Industrial steelwork
- Shipbuilding
- Offshore fabrication
- Bridge fabrication
- Engineering workshops
- Mechanical fabrication
- Manufacturing plants
- Heavy industrial construction
- Temporary corrosion protection
- Prefabricated steel assemblies
- Steel sections awaiting final painting
- Maintenance fabrication projects
Technical Information:
- Product Type: Weldable Holding Primer
- Technology: Solvent-Based Amine-Cured Epoxy
- Configuration: Two Component
- Colour: Red Oxide
- Finish: Matt
- Mixing Ratio: 4 : 1 (Base : Activator)
- Activator: Epoxy Activator Holding Primer
- Density: 1.22 kg/L
- Volume Solids: 35 ± 2%
- Recommended DFT: 20–30 Microns
- Recommended WFT: 70–85 Microns
- Coverage: 14 m²/L at 25 Microns DFT
- Number of Coats: 1
- Continuous Dry Heat Resistance: 100°C
- Touch Dry: 30 Minutes at 20°C
- Hard Dry: 4 Hours at 20°C
- Full Cure: 7 Days
- Minimum Recoat: 4 Hours
- Maximum Recoat: Up to 3 Months (Depending on Exposure Conditions)
- Pot Life: 8 Hours at 20°C
- Application Methods:
- Brush
- Roller
- Airless Spray
- Conventional Air Spray - Airless Spray Tip: 13–21 Thou
- Minimum Spray Pressure: 150 Bar
- Air Spray Fluid Tip: 1.8–2.2 mm
- Thinner: SA65 Thinner (0–20%)
- Cleaner: SA65 Thinner
- Pack Sizes: 5L & 20L
- Shelf Life: 12 Months
Colours & Finishes
Red Oxide
Matt Finish
Please Note: Colour swatches and illustrations displayed are only to be used as a guide and can vary from the original.
Documents & Resources
Industrial Protective Coatings
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