2K epoxy zinc phosphate primer with outstanding saltwater resistance and adhesion for heavy industrial applications. Engineered for port facilities, mining equipment & hydraulic steel in aggressive environments. Sa2.5 prep required, iron red or gray finish.
PLH53-6 Epoxy Zinc Phosphate Anti-Rust Primer is a two-component epoxy zinc phosphate anti-rust primer for heavy-duty corrosion protection of steel structures.
The product is formulated with epoxy resin, zinc phosphate, pigments, synergistic anti-rust pigments, solvent, additives, and curing agent. It is described as having good water resistance, salt water resistance, corrosion resistance, durability, adhesion, impact resistance, and coating system compatibility.
Designed for heavy-duty corrosion protection of steel structures
Described as having good water resistance
Described as having good salt water resistance and corrosion resistance
Described as having durability, adhesion, and impact resistance
Suitable for heavy-duty anti-corrosion applications
Compatible with multiple topcoat systems
This primer is suitable for heavy-duty steel protection projects in industrial and marine environments.
Typical application areas
Ports
Docks
Heavy structures
Mining machinery
Power machinery plants
Water conservancy projects
| Item | Details |
|---|---|
| Mixing Ratio (A:B) | 7:1 |
| Induction Time | 5 min |
| Pot Life | 4 h |
| Application Methods | Airless spray, brush, roller |
| Thinner / Cleaner | X-7 epoxy thinner |
| Typical Dilution | 2–8% (air spray/roller may require more) |
| Recoat Interval / Overcoating Interval (25°C) | Minimum 24 h; maximum 7 days |
| Recommended DFT | 50–80 µm per coat (brush/roller: 30–50 µm per coat) |
Abrasive blasting or shot blasting to Sa 2.5, or power-tool cleaning to St 3; surface profile 30–75 µm.
| Item | Value |
|---|---|
| Product Type | Two-component epoxy zinc phosphate anti-rust primer |
| Appearance / Color | Iron oxide red, gray |
| Theoretical Consumption | 0.12 kg/m² at 50 µm DFT (losses not included) |
| Density / Specific Gravity | 1.4 kg/L |
| Drying / Curing (25°C) | Touch dry 1 h; hard dry 24 h; full cure 7 days |
| Packaging | Part A 21 kg; Part B 3 kg |
| Shelf Life | 12 months |
Storage
Store in a dry, cool, ventilated warehouse away from fire sources and direct sunlight; outdoor storage is not permitted.
This primer is compatible with epoxy MIO intermediate coating, epoxy topcoat, polyurethane topcoat, and acrylic topcoat.
What is this primer used for?
This primer is used as a heavy-duty anti-corrosion primer for steel structures.
What application areas is it suitable for?
The product is suitable for ports, docks, heavy structures, mining machinery, power machinery plants, and water conservancy projects.
What application methods are recommended?
The product can be applied by airless spray, brush, or roller.
What surface preparation is required before application?
Abrasive blasting or shot blasting to Sa 2.5, or power-tool cleaning to St 3, with a surface profile of 30–75 µm.
What is the recommended recoat interval?
The minimum recoat interval is 24 h at 25°C, and the maximum recoat interval is 7 days.
What coatings is it compatible with?
It is compatible with epoxy MIO intermediate coating, epoxy topcoat, polyurethane topcoat, and acrylic topcoat.
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