If you are still using traditional galvanized steel (GI) for coastal projects, solar mounting systems, or agricultural buildings, you are missing out on a revolution.
ZAM (Zinc-Aluminum-Magnesium) coated steel is the fastest-growing segment in the coated steel market. With a unique alloy composition of Zn-(2-11%)Al-(1.5-3%)Mg, ZAM delivers 5 to 12 times the corrosion resistance of traditional GI – and CNB Group is the first Chinese manufacturer to produce ZM600 coating.
Why ZAM is replacing GI in demanding applications:
✅ Cut-edge self-healing – When the sheet is cut or scratched, the exposed edge forms a protective layer (Zn₅(OH)₈Cl₂·H₂O) that seals the cut and prevents corrosion from spreading. GI simply rusts.
✅ Superior salt spray performance – ZAM275 withstands 1,400+ hours before red rust appears, while standard Z275 GI fails before 500 hours. ZM600 extends this even further.
✅ Lower friction coefficient – Better formability, less die wear, and fewer surface defects during stamping and profiling – meaning lower production costs.
✅ Excellent weldability and paint adhesion – Compatible with standard welding and coating lines without process changes.✅ Ammonia resistance
– ZM180 has far superior resistance to ammonia exposure compared to GI Z180, making it ideal for livestock and agricultural buildings.
Where is ZAM being used right now?
Application | Why ZAM |
Solar PV mounting structures | 1MW project requires 30-35 tons of ZAM steel – extreme corrosion resistance in outdoor exposure |
Coastal warehouses and ports | Salt spray resistance up to 1,400+ hours |
Agricultural buildings | Superior ammonia resistance |
Automotive panels and structural parts | High strength and excellent formability |
Home appliances | Premium surface quality and corrosion resistance |
CNB Group‘s ZAM capabilities:
✅ Coating weight: ZM40 to ZM600 – China’s first ZM600 producer
✅ Thickness: 0.3mm to 8.0mm – up to 8.0mm thickness
✅ Width: 900mm to 1600mm
✅ Grades: DX51D-DX57D, S220GD-S550GD
✅ Daily stock: 3,000+ tons – fast delivery guaranteed
✅ ZAM steel pipe: The first enterprise to manufacture ZAM steel pipe
✅ Top 3 ZAM steel manufacturer in China
Don‘t let corrosion eat into your product lifespan and your profit. Upgrade to ZAM today.
📩 Send us your required grade, size, and coating weight – we’ll tailor a ZAM solution for you.