Aluminum-zinc coated color steel coil is a composite sheet made by
coating multiple layers of organic coatings (primer, topcoat,
backcoat) on the surface of an aluminum-zinc coated substrate. It
combines the excellent corrosion resistance of the aluminum-zinc
substrate with the decorativeness and functionality of the color
coating, making it a cost-effective choice in various industries.
Its advantages and applications can be analyzed in detail from the
following dimensions:
At the substrate level, the aluminum-zinc coated substrate contains
55% aluminum, 43.4% zinc, and 1.6% silicon. Aluminum forms a dense
oxide film on the surface to block the penetration of corrosive
media, while zinc provides electrochemical sacrificial protection.
The outer color coating uses weather-resistant resins (such as
PVDF, PE), which can resist erosion from harsh environments like
ultraviolet rays, acid rain, and high temperature & humidity. With
this dual protection, its outdoor service life can reach 20-30
years, far exceeding that of ordinary galvanized color steel coils
(10-15 years). It is especially suitable for areas with severe
corrosion such as coastal regions and industrial zones.
The color coating can achieve a wide range of color (e.g., full
color spectrum of RAL color card) and texture (flat coating, wood
grain, stone grain, metal wire drawing) effects, which can match
the design needs of different architectural styles (modern
minimalist, European retro, industrial style) or home appliance
appearances. At the same time, the coating gloss (high gloss,
matte, dull) can be customized according to scenarios, balancing
aesthetics and user experience (e.g., matte coating avoids strong
light reflection).
The substrate itself has high tensile strength and ductility. Even
after coating, it still maintains good bending, stamping, and
shearing performance, and can be processed into various forms such
as profiled sheets, arc sheets, and special-shaped parts to meet
the shape requirements of different construction or production
scenarios. Moreover, the coating is not easy to peel off or crack
during processing, reducing subsequent maintenance costs.
Additional functions can be endowed by adjusting the coating
formula: for example, flame-retardant coatings are selected for
places with high fire protection requirements (shopping malls,
factories); antibacterial coatings are used for home appliance
liners and medical equipment exteriors; self-cleaning coatings
(containing nanomaterials) are applied to the external walls of
high-rise buildings to reduce dust adhesion and cleaning frequency.
Although the initial purchase price is higher than that of ordinary
galvanized color steel coils, its total life-cycle cost is lower
due to the "long service life + low maintenance" characteristics.
There is no need for frequent renovation or replacement, and its
lightweight feature (compared with stone and ceramic tiles) can
reduce the cost of building load-bearing design, while also
improving transportation and installation efficiency.
- Enclosure Structures: It is the preferred material for roofs/walls of factories,
warehouses, and logistics parks. It can be processed into
standing-seam roof panels, hidden buckle panels, etc., which are
wind-resistant, rain-and-snow-resistant, and have a uniform and
beautiful color. When used for the external walls of public
buildings such as gymnasiums and exhibition centers, it can create
a landmark appearance with special-shaped processing.
- Civil Buildings: Suitable for villa roofs (replacing traditional tiles,
lightweight and anti-aging), sunroom frame exteriors
(corrosion-resistant and aesthetically pleasing), and as the base
material for external wall insulation integrated panels in
affordable housing.
- Municipal Facilities: Used for the canopies of bus stops, the panels of outdoor
advertising light boxes, and the external walls of garbage transfer
stations. It is weather-resistant and stain-resistant, and can
maintain a clean appearance after long-term use.
- Outer Casings of White Goods: Such as refrigerator side panels, washing machine outer drums,
and air conditioner outdoor unit casings. The color coating can
match the customized colors of home appliance brands, and the
aluminum-zinc substrate can resist corrosion in humid environments
such as kitchens and bathrooms, preventing the casing from rusting
and paint peeling.
- Exteriors of Small Home Appliances: Used for the casings or panels of ovens, microwave ovens, and
water purifiers. Some high-temperature resistant coatings can
withstand temperatures of 100-150℃, balancing aesthetics and
practicality.
- Transportation Facilities: Used for the exteriors of highway guardrails (resisting corrosion
from rainwater and salt, extending service life), container side
panels (replacing traditional paint, reducing rust during marine
transportation), and RV exteriors/roofs (lightweight and
shock-resistant, adapting to long-distance transportation
environments).
- New Energy Field: Used as the exterior material for photovoltaic brackets
(resisting outdoor exposure and sandstorms, protecting the bracket
substrate) and the enclosure panels of energy storage containers
(resisting high and low temperatures and corrosion, ensuring the
safe operation of energy storage equipment).
- Agricultural Field: Used for the frame exteriors of greenhouses (resisting high
humidity and pesticide corrosion, maintaining structural stability
for a long time) and the walls of breeding sheds (resisting ammonia
corrosion and easy to clean).
- Industrial Equipment: Used for the protective casings of large machinery (such as
machine tool covers and fan casings). The coating is oil-resistant
and wear-resistant, and the substrate is resistant to industrial
dust corrosion.
Galvanized Coated PPGI Steel Coil In Blue Color For Cutting Sheets
