ROVAL Corporation

ROVAL Series Paint Specifications

1. Scope of the application
This guide covers ROVAL series for use on steel or galvanized surfaces either in factories orconstruction site.

2. Purpose of use(1) Anti-corrosion protection for steel(2) Restoration of galvanized surfaces(3) An alternative to hot-dip galvanizing(4) Renovation of galvanized surfaces

3. Application Directions(1) Conditions
Do not apply in the following conditions.
A) Temperature below 5 ˚C and humidity above 85%.
B) Condensation exists on the surface.
C) Raining, snowing or inclement weather is expected.
D) Stormy or dusty.
(2) Inspection
Carry out regularly inspections and keep records in accordance with followings.
A) Surface: must be dry and free of any contaminants.
B) Coating: must be applied four(4) hours after the surface preparation.
C) Dry film thickness: measure at least 4 points randomly and all the results should beabove 80μm(3) Handling and othersA) Protect film from impact damage.
B) Repair damaged or thin area with the same ROVAL paint.
C) Protection such as packing should be done if necessaryD) Apply in an open ventilated area and avoid inhalation.
E) Keep away from heat, sparks, electrical equipment, and open flame.

4. Most important factor
ROVAL products has to be applied DIRECTLY to metal surfaces.
The direct contact between the zinc and the metal surface will result in cathodic reaction.
Never use primers.
Primer will compromise the performance of ROVAL products.
Important points for application
1） Proper surface preparation
2） Adequate agitation of products3） Sufficient film thickness

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5. Product selection
Select the product from the chart below in accordance with the anti-corrosive performance andsurface color. Select EPO ROVAL if you apply other manufacturer’s topcoat paint.
The film of ROVAL series weathers the same as hot-dip galvanized materials by exposure.
This characteristics makes repaired unapparent.
Product nameProduct features

ROVAL

Zinc content: 96%
Color: Gray
Equivalent anti-corrosion performance to hot-dip galvanizing.
Comply with ASTM A780

ROVAL SILVER

Zinc content: 83%
Color: Silver
Finishes in a color similar to hot-dip galvanizing.

EPO ROVALZinc content: 96%
Color: Gray
Possible to apply top coat from other companies.
Comply with ASTM A780

[Characteristics of Series](1) ROVAL + ROVAL (Color: Gray)
This system brings you the highest anti-corrosion performance along with the lowest costamong other systems.
(2) ROVAL + ROVAL SILVER (Color: Silver)
ROVAL SILVER contains zinc with aluminum pigment which makes surface color silver. Its
anti-corrosion performance is far superior to other conventional paints.
(3) EPO ROVAL + EPO ROVALEPO ROVAL can be coated by other top coat paints which are compatible with galvanizedsurfaces. The anti-corrosion performance is the same as ROVAL + ROVAL.

NoStartTop coat

GrayColortwo coats

SilverYes(3) EPO ROVAL(1) ROVAL(2) ROVAL + ROVAL SILVER

two coats + Top coat

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6. Coating Specifications(1) ROVAL + ROVAL(2) ROVAL + ROVAL SILVER
Theoretical

Practical Coverage *1

Coverage

BRUSH

SPRAY

(g/ m2)(g/ m2)(g/ m2)

Surface Preparation

Coating Interval(min)

Dry filmThickness(μm)

Refer to [7. Surface preparation](1st coat)
ROVAL

250300325(2nd coat)
ROVALorROVAL SILVER

250300325

40Total

500600650

8030~6040

Note: When applying only ROVAL SILVER two coats, ensure sufficient film thickness. (more than 80μm)(3) EPO ROVAL + EPO ROVAL + Top coating (other companies)
Theoretical

Practical Coverage *1

Coverage

BRUSH

SPRAY

(g/ m )

(g/ m2)(g/ m2)2

Surface Preparation

Coating Interval(min)Dry filmThickness(μm)

Refer to [7. Surface preparation](1st coat)
EPO ROVAL

250300325

30~6040(2nd coat)
EPO ROVAL

250300325

24 hours40Total

500

600

650

Intermediate coat

Use modified epoxy paint for galvanized surfaces. *2Final Coat

Use urethane or fluorine paint(Refer to manufacturers guide)80*1 Practical coverage includes 20% of loss for brush application, and 30% for spray application*2 Different types of paint may be exposed to a serious bubble phenomenon, please do mist treatment.
Note: Do not use Alkyd, phthalic, oil-based paints, because they will case the film peeling off.
Consider EPO ROVAL film as galvanized surface, ask the manufacturer about the compatibility withgalvanized surface.

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7. Surface preparation
Surface preparation greatly affects the anti-corrosion performance.
ROVAL products requires direct contact between the zinc dust in the film and the metal substrate
for optimum performance. Without direct contact, no galvanic action can occur. Since the surface
must be dry and free of any other paint and contaminants, employ adequate methods to remove
them thoroughly.
(1) Salt: Use high pressure washing to remove salt deposits. (50mg/ m2 or less)(2) Oil: Wipe off perfectly with solvent rags.
Steel surface

PurposeGalvanized surface

Hot-dip-galvanizing

Long-term rustalternative

prevention

Improved anti-corrosion performance of newgalvanized surfaces.
Renovation of old galvanized surfaces.

Mill scale,

Red rust,

Surface

Red rust,

condition

Old paint film,

Old paint film,
Welded part

Welded partSurface
preparation

No red rust
(Only white rust)

ISO 8501 Sa2 1/2 *1

ISO 8501 St3

ISO 8501 St2

Remove all the rust andUse a power tool to expose a clean metal

Use a hand toolmill scale by sandblasting

surface.

to remove white rust.

*1 Confirmation method: Compare the surface with standard photograph by visual observation.

8. Adequate agitation of products
Because ROVAL products contains a lot of powdered zinc, the contents may settle at the bottom ofthe can. Use a power paint mixer to obtain uniform density.

9. Coating method
ROVAL series are an easy-to-handle, single liquid type compound. It does not require any mixing
like two liquids and has no limitation of pot life.
The rest of the paint can be kept in a closed container.
Brush / Roller

Dilution is not required.
Only when the product thickens, use thinner within 5% of paint weight.
Use Gravity feed spray gun.
Nozzle size: 1.5 ~ 2.0 mm,

Conventional sprayPressure: 0.3 MPa

Paint strainer: #100
Dilution: 0 ~ 5% (ROVAL, EPO ROVAL)
5 ~ 10% (ROVAL SILVER)
Tip size: above 0.017 inches (e.g. 517)

Air-less sprayPressure: above 20 MPa,

Gun filter: #50 ~ 60

Dilution: 0 ~ 5%

Type of thinner

ROVAL Series Paint Specifications

ROVAL THINNER

ROVAL( or aromatic thinner like Xylene)

ROVAL SILVER

EPO ROVAL THINNEREPO ROVAL

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10. Coating interval
Apply second layer after the adequate cure time.
Recoating too soon may result in premature failure due to solvent entrapment in first coat.
[Dry Film Evaluation]
Push the thick part of the film strongly with a finger. Make sure there is no impression of finger prints
or move of the layer. Rub the surface repeatedly with a fingertip, make sure there is no impression
or finger mark.
Temperature (˚C)

5102030

40

Recommended Interval (min)604030105*Based on the condition: thickness 40μm, humidity 65%.

*Top coating on EPO ROVAL: Allow 24 hours cure time at ordinary temperature.

11. Get more information
You can get more information from the Web site.

Watch a video how to use ROVAL

Web site (How to use)
https://rovalworld.com/how-to-use

ROVAL CORPORATION (JAPAN)
SHANGHAI ROVAL ZINC RICH PAINT CORPORATIONROVAL (SHANGHAI) SALES & TRADING CORPORATIONROVAL Series Paint Specifications

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