
Galvanized Steel Coil
Zinc-Aluminum-Magnesium Coated Steel Coil
Galvanized coil is a steel coil with a layer of zinc coating on its surface, mainly used for anti-corrosion protection. This material is widely applied in fields such as construction, automobiles, home appliances, and mechanical manufacturing, and is one of the indispensable metal materials in industrial production.

1. How to get samples to check the quality? How long can I get the samples?
After the price is confirmed, samples can be provided for your evaluation. After confirming the sample details, the samples will be ready for delivery within 3-7 days, and sent to you by courier, and arrive within 3-5 days.
2.Do you provide samples ? is it free or extra ?
Answer:The sample could can provide for customer with free,but the courier freight will be covered by customer account.
3. Do you accept the third party inspection?
Answer: Yes absolutely we accept.
4.Can you accept customization?
Answer:Yes. If you have special requirements on products or packages, we can do customization for you.
5.How do you control the quality?
Answer:We have professional inspectors to analyze chemical composition of raw materials and test the finished products strictly according to standard stipulated in the contract. In this process, Internal and external surfaces, two ends appearance, bending degree, fixed length, outer diameter and wall thickness dimension etc will be checked one by one. You can be assured that all the products you get from us are reliable.


Zinc-aluminum-magnesium-coated steel sheets (also known as ZAM or galvanized aluminum-magnesium alloy steel sheets) are a new generation of highly corrosion-resistant coated products developed by adding alloying elements such as aluminum and magnesium to the hot-dip galvanizing process. The zinc in the coating provides sacrificial protection, aluminum forms a dense passivation film, and magnesium activates the alloy coating, working synergistically to enhance corrosion resistance.
Depending on the alloy composition, these coatings are primarily classified into the following systems:
| Zinc-Aluminum-Magnesium Coated Steel Coil Technical Data Sheet | |
|---|---|
| Product Name | Zinc-Aluminum-Magnesium Coated Steel Coil (ZAM Coated Steel Coil) |
| Applicable Standard | YB/T 4761-2019 “Continuously Hot-Dip Zinc-Aluminum-Magnesium Alloy Coated Steel Sheet and Strip” |
| Coating Composition Systems | |
| Low Al-Mg | Zn-(1.5-2.5)%Al-(1-2)%Mg (ZM) | 6-10x vs. Galvanized Steel |
| Medium Al-Mg | Zn-(4-7)%Al-(2-4)%Mg (AM) | 8-12x vs. Galvanized Steel |
| High Al-Mg | Zn-(10-12)%Al-(2-4)%Mg (AM) | 10-15x vs. Galvanized Steel |
| Al-Zn-Mg | Al-43.5%Zn-1.5%Si-(1.5-2)%Mg (AZM) | 10x vs. Galvalume Steel |
| Steel Grades | |
| Low Carbon Steel | DC51D+ZM, DC52D+ZM, DC53D+ZM (Commercial, forming, deep drawing quality) |
| Structural Steel | S250GD+ZM ~ S550GD+ZM (Yield strength 250-550MPa) |
| Low Alloy High Strength | HC260LAD+ZM ~ HC340LAD+ZM |
| Dual Phase Steel | HCT450X+ZM, HCT590X+ZM |
| Dimensional Specifications | |
| Thickness | 0.20mm – 6.0mm |
| Width | 700mm – 1600mm |
| Coating Weight (Both Sides) | 40 – 800 g/m² |
| Common Coating Weights | 60/60, 75/75, 90/90, 100/100, 125/125, 150/150 g/m² |
| Coil ID | 508mm / 610mm |
| Surface Treatment | |
| Treatment Types | C5 (Chrome-free passivation) / CO5 (Passivation + Oiling) / N5 (Anti-fingerprint) / O (Oiling) / U (No treatment) |
| Performance Advantages | |
| Corrosion Resistance | 6-15x longer than traditional galvanized steel |
| Cut-edge Self-healing | Forms protective film on cut edges, automatically repairs exposed substrate |
| High Temperature Resistance | Withstands up to 380°C |
| Formability | Excellent stamping, bending and welding properties |
| Main Applications | |
| Industries | Solar Industry, Construction, Home Appliances, Automotive, Electrical Industry, Agriculture |
| Packaging & Delivery | |
| Packaging | Standard export packaging: inner kraft paper + waterproof film + outer galvanized steel sheet + steel straps |
| Lead Time | 7-35 days |
| Payment Terms | T/T (30% deposit + 70% balance), L/C at sight |






















