Industrial Coating Solutions for Petrochemical-ZINDN

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Industrial Coating Solutions for Petrochemical

Petroleum and Petrochemicals

The Necessity of Anti-Corrosion for Steel Structures in Petroleum & Petrochemical Storage Tanks

Storage tanks are critical components in the oil and petrochemical industry, used for containing crude oil, gasoline, diesel, and other hazardous products. Given the flammable and corrosive nature of these substances, robust tank protection is essential.

Since petroleum products act as potent solvents with high paint-dissolving properties, selecting coating systems with proven oil resistance is paramount for effective corrosion prevention.

Steel Oil Tanks Coating Reference System >>

Surface Preparation:

1. Blast cleaning to Sa 2.5 (ISO 8501-1) with 45–70 μm profile
2. Remove all welding spatter, sharp edges, and structural defects affecting coating adhesion
3. Ensure surfaces are dry, dust-free, and contaminant-free before coating

Environmental Conditions:
• Ambient temperature: 5–35°C
• Prohibited conditions: Rain, fog, snow, or RH >80%

1.1 Coating Area: Tank Bottom Plate (Underside)

Coating Structure	Variety Of Paint	Colour	Dry Film Thickness/μm	Recommended Number Of Coating Passes
Primer/bottom surface in one	Epoxy thick build anticorrosive coating	Black	300	3
Primer	Inorganic zinc-rich primer around the weld	Grey	80	2

1.2 Coating Area: Tank Bottom Plate (Topside) + Lower 1.8m Inner Wall (Crude Oil/Naphtha Tanks)

Coating Structure	Variety /of Paint	Colour	Dry Film Thickness/μm	Recommended Number Of Coating Passes
Primer	Epoxy primer	Iron oxide red	120	1
Topcoat	Solvent-free epoxy anticorrosive coating	Grey	200	1

1.3 Coating Area: Floating Roof (Underside) + Outer Edge Plate (Exterior Surface)

Coating Structure	Variety Of Paint	Colour	Dry Film Thickness/μm	Recommended Number Of Coating Passes
Primer	Epoxy oil resistant, static conductive and anticorrosive paint primer	Red-brown	150	2
Topcoat	Epoxy oil resistant, static conductive and anticorrosive paint finish	Light gray	100	1

Water-based Solution:

Coating Structure	Variety Of Paint	Colour	Dry Film Thickness/μm	Recommended Number Of Coating Passes
Primer	Waterborne epoxy graphene oil resistant, static electricity conductive and anticorrosive paint primer	Red-brown	150	3
Topcoat	Water-based epoxy mica oil-resistant, static-conducting and anticorrosive paint finish	Light gray	150	3

1.4 Coating Area: Heater (Exterior Surface) & Coils / Heater Support Brackets

Coating Structure	Variety Of Paint	Colour	Dry Film Thickness/μm	Recommended Number Of Coating Passes
Primer	Epoxy silicone heat-resistant primer	Iron oxide red	150	3
Topcoat	Epoxy silicone heat-resistant topcoat	Grey	100	2

Water-based Solution:

Coating Structure	Variety Of Paint	Colour	Dry Film Thickness/μm	Recommended Number Of Coating Passes
Primer	Water-based epoxy silicone heat-resistant primer	Iron oxide red	150	3
Topcoat	Water-based epoxy silicone heat-resistant topcoat	Grey	100	2

1.5 Coating Area: Pontoon (Interior Surface) & Internal Structures

Coating Structure	Variety Of Paint	Colour	Dry Film Thickness/μm	Recommended Number Of Coating Passes
Primer	Water-based inorganic zinc-rich primer	Grey	80	1

1.6 Coating Area: Tank Wall (Exterior Surface) + Upper 2cm Interior / Floating Roof Deck (Topside) / Wind Girders

Coating Structure	Variety Of Paint	Colour	Dry Film Thickness/μm	Recommended Number Of Coating Passes
Primer	Epoxy zinc-rich primer	Grey	75	1
Intermediate paint	Epoxy Mica Intermediate Paint	Grey	100	1
Topcoat	Acrylic polyurethane anticorrosive finish	White	80	1

Water-based Solution：

Coating Structure	Variety Of Paint	Colour	Dry Film Thickness/μm	Recommended Number Of Coating Passes
Primer	Waterborne epoxy zinc-rich primer	Grey	80	2
Intermediate paint	Waterborne epoxy mica intermediate paint	Grey	100	2
Topcoat	Waterborne acrylic polyurethane anticorrosive topcoat	White	80	2

1.7 Coating Area: Tank Wall Exterior (Volatile Oil Service)

Coating Structure	Variety Of Paint	Colour	Dry Film Thickness/μm	Recommended Number Of Coating Passes
Primer	Thermal insulation cooling paint primer	Grey	60	1
Intermediate paint	Intermediate paint for heat insulation and cooling paint	White	90	1
Topcoat	Thermal insulation cooling paint finish	White	150	2

Water-based Solution:

Coating Structure	Variety Of Paint	Colour	Dry Film Thickness/μm	Recommended Number Of Coating Passes
Primer	Water-based thermal insulation and cooling paint primer	Grey	100	2
Intermediate paint	Intermediate paint for water-based thermal insulation and cooling paint	White	100	2
Topcoat	Water-based heat insulation and cooling paint finish	White	100	2

1.8 Coating Area: Solvent Tank Interior (Corrosion Protection)

Coating Structure	Variety Of Paint	Colour	Dry Film Thickness/μm	Recommended Number Of Coating Passes
Primer	Inorganic zinc-rich primer	Grey	120	2

1.9 Coating Area: Tank Exterior (High-Performance Coating System)

Coating Structure	Variety Of Paint	Colour	Dry Film Thickness/μm	Recommended Number Of Coating Passes
Primer	Epoxy zinc-rich primer	Grey	75	1
Intermediate paint	Epoxy Mica Intermediate Paint	Grey	100	1
Topcoat	Fluorocarbon topcoat	Customized	80	1

Water-based Solution：

Coating Structure	Variety Of Paint	Colour	Dry Film Thickness/μm	Recommended Number Of Coating Passes
Primer	Waterborne epoxy zinc-rich primer	Grey	80	2
Intermediate paint	Waterborne epoxy mica intermediate paint	Grey	100	2
Topcoat	Water-based fluorocarbon top coat	Customized	80	2

Corrosion Protection and Maintenance Management System for Steel Petroleum Storage Tanks >>

Examples Of Painted Parts	Protection Plan	Road Number	Thickness(μm)
Outer wall of petroleum storage tank	Surface pretreatment	Sandblasting and rust removal reach Sa2.5 level
	Epoxy zinc-rich primer	1	80-120
	Epoxy Mica Intermediate Paint	1	60-80
	High fluorocarbon topcoat/polyurethane topcoat	1	80

Coating Cases in the Petroleum and Petrochemical Industry

Qinghai Petroleum Administration Bureau No. 2 Tank

Macau Nanguang Company Oil Storage Tank

Dagang Oil Refinery

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