Overview
The aluminium-zinc coating combines the barrier protection of aluminium with the cathodic protection of zinc, so it outlasts plain galvanized sheet in most atmospheres. Coating mass is given by an AZ number (for example AZ100 or AZ150), counted on both sides.
Orders should state the base metal thickness (BMT) or total coated thickness (TCT), the steel strength (G300, G550) and the coating mass. Keep the sheet away from wet concrete, copper and treated timber.
Uses
- 01Factory and warehouse roofs and walls
- 02Substrate for pre-painted sheet and panels
- 03Purlins, gutters and flashings
- 04Canopies and awnings
Selection and acceptance checks
- Check BMT/TCT and the coating class printed on the sheet
- Check yield strength (G300, G550) on the certificate
- Store dry and avoid water trapped between sheets
Reference standards
- ASTM A792
- JIS G 3321
- AS 1397
For reference only. The standards for each project follow its design documents, current Vietnamese codes and the investor’s requirements.
Reference brands
BlueScopeAustralian steel group making coated and painted steel and roofing, walling and purlin systems.
Hoa SenVietnamese manufacturer of coated and pre-painted steel sheet, steel pipe and plastic pipe.
Tôn Đông ÁVietnamese producer of galvanized, aluminium-zinc coated and pre-painted steel sheet.- Nam Kim Nam KimVietnamese producer of coated and pre-painted steel sheet and steel pipe.
Hòa PhátVietnamese industrial group producing reinforcing bar, hot-rolled coil, steel pipe and coated sheet.
Brands are listed for reference; World Steel selects suppliers according to each project’s specification.
Sectors and solutions
Sectors
FDI factories Logistics and cold storage Agriculture and food
