PLHL52-4 Epoxy Coal Tar Bitumen Anti-Corrosion Coating

Epoxy coal tar bitumen anti-corrosion coating (2K) for buried pipelines and wet-dry service.

  • Buried pipelines, tank bottoms, submerged structures.

  • Mix ratio 7:1; recoat 12 h–7 d.

  • Resists seawater, salt spray, oil; anti-microbial.

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PLHL52-4 Epoxy Coal Tar Bitumen Anti-Corrosion Coating Description

Overview

PLHL52-4 Epoxy Coal Tar Bitumen Anti-Corrosion Coating is a two-component epoxy coal tar bitumen anti-corrosion coating supplied as primer and topcoat. This coating is used for long-term anti-corrosion on external surfaces of buried pipelines, bottom plates of liquid storage tanks, and steel or concrete in submerged or wet-dry alternating environments.

It is composed of epoxy resin, coal tar pitch, anti-rust pigments, fillers, solvent, and additives, with a modified amine curing agent, and is supplied as Part A and Part B.

Key Benefits

  • Supplied as primer and topcoat.

  • Designed for long-term anti-corrosion.

  • Suitable for external surfaces of buried pipelines.

  • Suitable for bottom plates of liquid storage tanks.

  • Suitable for steel and concrete in submerged environments.

  • Suitable for steel and concrete in wet-dry alternating environments.

This coating is suitable for a wide range of steel and concrete protection projects in industrial and buried service environments.

Typical application areas

  • External surfaces of buried pipelines

  • Bottom plates of liquid storage tanks

  • Steel in submerged environments

  • Concrete in submerged environments

  • Steel in wet-dry alternating environments

  • Concrete in wet-dry alternating environments

Application Guide

Item Data
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, 2–8%
Recoat Interval (25°C) min 12 h; max 7 d
Recommended DFT per coat 50–80 µm (brush/roller 35–50 µm)

Surface Preparation

Blast to Sa 2.5 or power-tool clean to St 3; surface profile 30–75 µm.

Technical Data

Item Data
Product Type Two-component epoxy coal tar bitumen anti-corrosion coating
Appearance primer brown-black; topcoat black
Theoretical Consumption PLHL52-4 0.17 kg/m² at 60 µm (loss not included)
Density primer 1.35 kg/L; topcoat 1.3 kg/L
Drying Time (25°C) surface dry 2 h; hard dry 24 h; full cure 7 d
Packaging Part A 22 kg; Part B 3 kg
Shelf Life 12 months

Storage
store in a dry, cool, ventilated place; keep away from fire; avoid strong sunlight; no outdoor storage.

System Compatibility

System compatibility: (high-build) epoxy coal tar bitumen primer + (high-build) epoxy coal tar bitumen topcoat.

Frequently Asked Questions

What type of product is this?

This product is a two-component epoxy coal tar bitumen anti-corrosion coating supplied as primer and topcoat.

What is this coating used for?

This coating is used for long-term anti-corrosion on buried pipelines, tank bottom plates, and steel or concrete in submerged or wet-dry alternating environments.

Can this coating be used on concrete?

Yes. This coating is used on steel and concrete in submerged or wet-dry alternating environments.

What application methods can be used?

This coating can be applied by airless spray, brush, or roller.

The recommended dry film thickness per coat is 50–80 µm, or 35–50 µm by brush/roller.

What system compatibility is provided for this product?

System compatibility includes (high-build) epoxy coal tar bitumen primer and (high-build) epoxy coal tar bitumen topcoat.

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