ZAM Steel Coil Supplier in Pakistan — Zinc-Aluminium-Magnesium
ZAM coil steel is widely used in solar mounts, agricultural greenhouses, and coastal infrastructure. Key specifications feature zinc aluminum magnesium coatings alongside thicknesses reaching six millimeters, ensuring excellent corrosion resistance.
Sizes Available:
1219
- 1.0mm
- 1.2mm
- 1.5mm
- 2.0mm
| Attribute | Range / Standard |
|---|---|
| Product | Zinc-aluminium-magnesium (ZM) coated steel coil |
| Thickness | 1.0 mm, 1.2 mm, 1.5 mm, 2.0 mm |
| Width | 1219 mm |
| Coating type | Zinc with aluminium and magnesium additions |
| Standards | ASTM A1046/A1046M; JIS G3323 |
| Typical uses | Solar mounting, greenhouse frames, coastal and industrial structures |
| PCT heading | 72.10 — zinc-predominant coatings classify under 7210.49 |
What it is and how it is specified
ZM coatings add aluminium and magnesium to the zinc bath. The magnesium forms a more stable corrosion product, and the coating gives a degree of cut-edge protection that plain galvanized does not, which is why it is specified for solar mounting structures and coastal work.
ZM is not the same product as Galvalume. Galvalume is aluminium-predominant at roughly 55% aluminium; ZM remains zinc-predominant. That distinction decides the tariff heading and therefore the duty exposure, so it is worth getting right on the paperwork before the goods sail.
Duty and origin
Because ZM is zinc-predominant it classifies under a different tariff heading from Galvalume, and a different trade-remedy instrument applies. Confirm classification and origin before you commit — our Galvalume duty guide explains how the two measures differ and why the predominance test matters at clearance.