SALES ! Hot Dipped Full Hard Galvanized Steel Coil (GI, roofing
|Product Description of Galvanized Steel Sheet|
1)Aluminum and zinc galvanized steel is the best combination of
components and structure of the alloy coated steel.
2)Alloying elements aluminum, zinc and silicon-containing coating.
3)It combines aluminum corrosion resistance, heat resistance and
zinc electrochemical (sacrificial anode) Performance
|Product Feature of Galvanized Steel Sheet|
Good corrosion resistance
1)Under various environmental conditions, Galvalume exhibit
excellent corrosion resistance
than galvanized steel sheet of the same thickness,and its service life is 2-6 times
that of ordinary galvanized steel.Galvanized parts due to the deformation of
micro-cracks less than galvanizing, thus forming region is much higher than the
corrosion resistance hot dip galvanized.
2)There are examples of the use of the roof for 20 years in North
3)It sort of life: rural industrial atmosphere --- --- --- general
atmosphere of severe marine
Good thermal properties
(1) Heat resistance: general galvanized products typically use
temperature does not exceed 230 ℃,
reached 250 ℃ when will change, but long-term use galvanized plate
at 315 ℃ environment.
(2) heat-reflective good: its reflection coefficient is hot
galvanized plate twice in the summer can
reduce the indoor temperature, reducing air conditioning
Aluminum (300G / M2): 40H / WATT / M2
Galvalume (150G / M2): 65H / WATT / M2
Galvanized (275G / M2): 120H / WATT / M2
Asbestos / cement: 150H / WATT / M2
Good surface properties
Small and uniform spangle
1.Color is bright silver
2.High surface hardness (scratch is not easy to rub)
3.A plurality of colors may be applied a semipermeable membrane
Galvalume when used as a tablet or other purposes by spray coating,
degreasing simply without
the need for pre-treatment or etching treatment, because of its
coating and the coating has a
good combination of polarity, and hot-dip galvanizing layerIt is
Relatively light weight
Because of galvanized steel plating lighter, in the case of the
same coating thickness is greater
than the developed area per ton of galvanized steel, with 0.48MM,
plating 40μm (both sides),
for example, its weight and tons of steel per square expand area as
Weight per square meter per ton of steel to expand the area
Substrate thickness AZ150 Z275 AZ150 Z275
0.48mm 3.94kg 4.06kg 254m2 246m2
|Corrosion mechanism of Galvanized Steel Sheet|
(1) physical effects
Aluminum zinc coating on the surface of steel sheet, steel plate in
contact with the outside blocking
the corrosive medium, the steel sheet eliminating the corrosive
effects of corrosive media.
(2) chemical action
Corrosion beginning, zinc portion preferential dissolution (~
-1.05V), followed by aluminum-rich partially
dissolved (-0.9V), between last metal compound is dissolved
(-0.75V), are lower than the electrode
potential of iron (-0.44V) Therefore aluminum zinc layer protects
the substrate etching priority, called a
sacrificial anode protection.
(3) trivalent aluminum ion doped role
Rp (Al-Zn) = 10.5kΩ * cm2
Rp (Zn) = 3.1kΩ * cm2
Thus slowing the corrosion reaction speed
Company Information---The Reason Why You Will Choose Us
- We are an large storage company and have our own factory . We
specialize in stainless steel products for 23 years, we can supply
Processing services , including cutting ,welding , surface
treatment and precision processing.
- Our product line includes stainless steel
sheet/plate/circle/coil/strip/pipe/tube/bar. etc and galvanized
steel sheet/plate/coil/strip. etc . More than 200 kinds of products
for your choice .
- We can also supply special stainless steel product , such as Monel
/ Incoloy / Inconel / Hastelloy .etc
- we have strict inspection system to ensure the quality, and all
processes are carried out according to ISO 9001: 2008.
- we are nominated as the AAA enterprise by Jiangsu government.
- We are powerful manufacturer audited by world top inspection
company ISO ,SGS, TUV and BV.
- Our products have been exported to more than 60 countries and
regions, including Europe, Middle East, South Asia, South America,
Africa, United Arab Emirates .etc.
- The annual production capacity is 50000 tons stainless steel