Heavy Duty Coating

DHDC-2740HB Two-component acrylic urethane top coat, high build

Steel surfaces of steel structures and bridges, steel surfaces of various industrial facilities

This paint is a premium top coat based on acrylic urethane resin and is suitable as an interior/exterior top coat for steel structures coated with epoxy primer. It has superior physical properties such as abrasion resistance, weather resistance and color retention ability to general urethane or epoxy paints, and is widely used for new and repair painting of heavy duty coating.


Paint type
Acrylic urethane / Top coat(non-yellowing type) (Two-Component)
Drying time
Drying time
Category 5℃ 20℃ 30℃
Set-to-touch 1 hour 30 minutes 20 minutes
Dry-hard 12 hours 8 hours 6 hours
Over-coat (Min.) 20 hours 10 hours 7 hours
Over-coat (Max.) 1 month 15 days 7 days
Maturation time 30 minutes 20 minutes 10 minutes
Pot life 3 hours 2 hours 1 hour
Dilution ratio
▷Brush, roller coating: less than 5% ▷Airless, spray coating: less than 10%
Specific gravity
Approx. 1.45(Based on white color)
Theoretical Coverage
6.75 ㎡/ℓ (1 time - 80㎛)
Solid volume ratio
Approx. 55±1%
White, other colors
Thickness of dried film
Mixing ratio
Base(A)/Hardener(B)=7/1 (Volume ratio)
Flash point
At least 24℃
Shelf life
12 months (Dry, cool, and dark place with good ventilation)


Acrylic urethane
Two-component type acrylic urethane product with excellence weatherability in outdoor environmental conditions.
Excellent film property
The product has solid film and good adherence, weatherability and chemical resistance.

how to use

Surface treatment
1. Completely remove oil, moisture, sand, dust, and other foreign matter from the surface to be coated.
2. Sufficiently dry the surface to be coated before coating.
3. After primer coating, clean up the welded areas (blackened and rusted areas) with a disc sander.
Then, touch up with this paint and continue coating.
Coating method
1. Coating can be done by either brush, roller, or airless spray coating.
2. Airless spray coating :
- Tip diameter : 0.019"~0.023"
- Injection pressure : More than 2500 P.S.I (176㎏/㎠)
- Store the coating equipment after cleaning with an exclusive thinner immediately after use.
Preceding and follow-up coating
1. Preceding coating : Epoxy system, urethane system paint
1. Sufficient performance after last coating is achieved after drying for 7 days at 20℃.