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.
Overview
Two-component epoxy coal tar bitumen anti-corrosion coating supplied as primer and topcoat.
Composition
Epoxy resin, coal tar pitch, anti-rust pigments, fillers, solvent, additives; modified amine curing agent; supplied as Part A & Part B.
Typical uses
Long-term anti-corrosion for external surfaces of buried pipelines.
Also used for bottom plates of liquid storage tanks and steel/concrete in submerged or wet-dry alternating environments.
Technical data (typical)
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.
Application data (25°C)
Mixing ratio (A:B): 7:1.
Induction time: 5 min.
Pot life: 4 h.
Application methods: airless spray, brush, roller.
Thinner: 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.
System compatibility / packing / storage
System compatibility: (high-build) epoxy coal tar bitumen primer + (high-build) epoxy coal tar bitumen topcoat.
Packing: Part A 22 kg; Part B 3 kg.
Storage: store in a dry, cool, ventilated place; keep away from fire; avoid strong sunlight; no outdoor storage.
Shelf life: 12 months.
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