- +86 150 5000 6973
- +1 225 255 1197 (US
- info@huilicoating.com
- Yongqiao District, Anhui, China
ISO 9001:2015 Certified
Single-component APP polypropylene anti-corrosive coating for buried pipelines in oil, gas, power and municipal water supply rated to 150°C. Chemical and water-resistant film, low-temperature cure to -20°C. 0.5mm+ total system with glass fiber reinforcement option.
Overview
Single-pack anti-corrosion pipeline coating system supplied as primer (APP-81) and topcoat (APP-61), applicable down to -10°C.
Composition
Modified polypropylene (APP), neoprene rubber, synthetic resins, pigments/fillers, protective agents, stabilizers, solvent.
Typical uses
Anti-corrosion protection for buried pipelines in metallurgy, power, petroleum, chemical, tap water, coal gas, natural gas, oil and gas transmission, and district heating (≤150°C).
Also suitable for demineralized water tanks, sewage tanks, and power plant circulating water systems; suitable for concrete facilities.
Technical data (typical)
Appearance: primer reddish brown; topcoat black.
Theoretical consumption: primer 0.17 kg/m² at 50 µm DFT (loss not included).
Theoretical consumption: topcoat 0.2 kg/m² at 50 µm DFT (loss not included).
Density: primer 1.40 kg/L; topcoat 1.2 kg/L.
Drying time (25°C): surface dry 1 h; hard dry 24 h; full cure 7 d.
Application data (25°C)
Mixing: single-pack.
Induction time: none.
Pot life: unlimited.
Application methods: airless spray, brush, roller.
Thinner: APP dedicated thinner, 3–6%.
Recoat interval: min 6 h; max unlimited.
Recommended DFT per coat: 30–50 µm (brush/roller 30–40 µm).
System: APP-81 primer + APP-61 topcoat; for enhanced protection, apply 1–2 plies of fiberglass cloth to reach total thickness ≥0.5 mm.
Surface preparation
Steel: blast to Sa 2.5 or power-tool clean to St 3; surface profile 30–75 µm.
System compatibility / packing / storage
System compatibility: APP-81 primer + APP-61 topcoat.
Packing: primer 25 kg; topcoat 22 kg.
Storage: dry, cool, ventilated; away from fire; avoid strong sunlight; no outdoor storage.
Shelf life: 12 months.
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