Oil Tank Anti-Corrosion Solution

Application Scenarios

Crude oil storage tanks, refined oil storage tanks, chemical storage tanks, and other liquid storage tank anti-corrosion coating applications.

Selection Logic

Oil tank coating selection should separate external atmospheric exposure from internal chemical or immersion exposure. The tank shell, roof, bottom plate, internal wall, and buried or contact areas may need different coating systems, surface preparation levels, and inspection requirements.

Recommended Coating Systems

External Anti-Corrosion

Coat	Product	Coats	DFT (μm)
Primer	Epoxy Zinc-Rich Primer	1	60-80
Intermediate	Epoxy MIO Intermediate Coat	1	80-100
Topcoat	Acrylic Polyurethane Topcoat / Fluorocarbon Topcoat	2	80-100
Total			220-360

Internal Anti-Corrosion

Coat	Product	Coats	DFT (μm)
Primer	Epoxy Anti-Corrosion Primer	1	60-80
Topcoat	Epoxy Anti-Corrosion Topcoat	2	100-120
Total			160-200

Surface Preparation

• Blast cleaning Sa2½
• Surface roughness Rz 50-85 μm
• Cleanliness: Free of oil, dust, and contaminants

Design Life Reference

Design service life: 15-25 years.

Related ISO 12944 Classes

• C3-C4: ordinary outdoor tank farms and general industrial atmospheres.
• C5: coastal tank farms, high-humidity areas, and aggressive industrial exposure.
• CX or immersion service: requires project-specific review and current TDS/SDS confirmation.