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PLH53-6 Epoxy Zinc Phosphate Anti-Rust Primer

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.

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PLH53-6 Epoxy Zinc Phosphate Anti-Rust Primer Description

Overview

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.

Key Benefits

  • 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

Application Guide

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)

Surface Preparation

Abrasive blasting or shot blasting to Sa 2.5, or power-tool cleaning to St 3; surface profile 30–75 µm.

Technical Data

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.

System Compatibility

This primer is compatible with epoxy MIO intermediate coating, epoxy topcoat, polyurethane topcoat, and acrylic topcoat.

Frequently Asked Questions

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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