Products Specifications
| Product | ZAM 3%Mg 6%Al |
| Thickness | 0.35-2.5mm |
| Width | 900-1250mm |
| Coil Weight | ≤25ton |
| Coil Inner Diameter | 508mm 610mm |
| Weight of Zinc layer | 60-300g/㎡ |
| Annual Output | 200000 |
| Usage | Agriculture light complementary(photovoltaic), animal husbandry, water building, etc |
Products Advantage
Super Corrosion
Alloying elements such as Al, Mg, and Si are added to the Hot Dipped ZAM Steel Coil, significantlyreatly improving the corrosion inhibition effect of the coating. Compared with ordinary galvanized products, the coating has less adhesion but can achieve better corrosion resi—10ce—10 to 20 times that of galvanized steel.
Self Repair
The self-healing of the incision in the processing of Hot Dipped ZAM Steel Coil products means that the incision surface is in a humid and corrosive environment. As a result, the coating material near the incision dissolves into the water film attached to the bare metal surface, continuously migrates and dips into the exposed incision position, and forms a zinc hydroxide, The thick protective film (white rust) composed of alkaline zinc chloride and magnesium hydroxide gradually covers the exposed cut metal. It separates the external corrosive medium from the exposed metal substrate, thereby preventing further corrosion of the exposed cut. However, the whole process will take a long time.
Long life
The key component of Hot Dipped ZAM Steel Coil is the addition of Mg-Al-Zn, which has strong and reliable chlorine resistance (edible salt/sweat stains/sea surface/evening wind/soil layer) and alkali corrosion resistance, which can ensure that it will not produce chlorine for 20-30 years red rust.
This is a coating product with excellent comprehensive performance. It can be strengthened 10-20 times compared with galvanized coating under the same amount. It has excellent protection for cuts and good welding performance.
Easy to process
Hot Dipped ZAM Steel Coil is denser than galvanized sheet, so it is less likely to occur during stamping processing and has excellent processing properties such as stretching, stamping, bending, and welding under severe conditions.
Surface result in salt spray test
| Test Parameters | ZAM | GI |
| Coating weight(g/㎡） | 275±5 | 275±5 |
| Thickness（mm） | 0.35 | 0.35 |
| Test Result | red rust occurs in 5400hours | red rust occurs in 650hours |
The role of Mg and Al in Hot Dipped ZAM Steel Coil
The Mg and Al in the Hot Dipped ZAM Steel Coil can stabilize the basic zinc carbonate and prevent the formation of loose ZnO. However, it will promote the development of oxide corrosion products in the direction of compactness, low solubility, and poor conductivity.
When the content of AL is higher, dense precipitate corrosion products with good adhesion and low conductivity are formed.
The polarization resistance of Zn-Al-Mg alloy coating is about twice that of pure zinc coating, which is one of the reasons why the corrosion resistance of ZHot Dipped ZAM Steel Coil is higher than that of pure zinc coating.
FAQ
What are your products?
A: Prepainted Galvanized Steel Coil
Galvanized Steel Coil
Prepainted Galvalume steel coil
Galvalume steel coil
Hot Dipped ZAM Steel Coil
Prepainted Aluminium steel coil
Corrugated roofing sheet
Q. How many days for your delivery time?
A: Usually is 10-20 days
Q: Can we appoint a shipping company?
A: Yes, we can order ship according to your appointments.
Q: What's your payment term?
A: FOB:30% deposit,70% before shipment
CIF/CFR:30% depsoit,70% agaisnt BL copy
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