G550 Galvanized Steel
G550 galvanized steel is a high-strength hot-dip galvanized steel with the core advantages of high strength and strong corrosion resistance, and it is widely used in load-bearing applications.
- Thickness: 0.12mm – 5mm
- Width: 600 – 1500mm or slit to the required width
- Product types available: Coils, sheets, corrugated sheets, floor decking, profiles
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G550 Meaning
G550 steel is a high-strength, low-carbon steel belonging to the Australian standard AS1397, with a yield strength greater than 550 MPa. The surface can be coated with coatings including zinc (Z), aluminum zinc (AZ), aluminum magnesium (ZAM), etc.
G550 Gi Steel Specification
| Product Name | G550 Galvanized Steel |
| Thickness | 0.12mm – 5mm |
| Width | 600 – 1500mm or slit to the required width |
| Substrate | G550 steel |
| Zinc coating range | Z30g/m² – Z275g/m² |
| Surface finish | Zero spangle, small spangle, regular spangle, large spangle |
| Yield strength | ≥550MPa |
| Tensile strength | ≥570MPa |
| Standard | AS 1397 |
| Processing services | Slitting, cutting, pressing, cold bending, etc. |
| Surface treatment | Chromate passivation or chromium-free passivation |
| Product types available | Coils, sheets, corrugated sheets, floor decking, profiles |
| Pressure | Cold rolled annealed (soft) / Fully hard (HRB≥85) |
| MOQ | 10 tons |
| Packaging | Standard export packaging (plastic film, moisture-proof paper, and galvanized iron sheet) |
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G550 GI Coil Advantages
- High Strength, Light Weight: Core advantage with high yield strength. 0.6mm G550 galvanized steel offers bending strength comparable to 1.2mm standard galvanized steel, reducing structural self-weight.
- Superior Corrosion Resistance: The G550+ galvanized coating offers excellent corrosion resistance. For coastal high-salt-fog or industrial corrosion environments, aluminum-zinc coatings and ZAM coatings can be used.
- Excellent Formability: Suitable for cold bending, stamping, welding, and other processing operations. Can be rolled into complex profiles such as corrugated sheets and purlins.
- Versatile functional adaptability: Surfaces can undergo fingerprint-resistant, passivation, or pre-painting treatments, combining decorative appeal with practicality for home appliance applications.
G550 Galvanized Steel Applications
- Large-Span Building Enclosure Systems: Used as standing seam roof panels and wall systems for industrial plants and logistics warehouses.
- Load-Bearing Structural Members: Processed into C section steel and Z section steel for structural support such as purlins and wall beams in buildings.
- Composite Floor Decking: G550 galvanized steel sheets are commonly processed into ribbed floor decking panels.
- Automotive & Transportation: Used in manufacturing truck crossbeams, cargo body frames, as well as chassis reinforcement components and crash structures for automobiles.
G550+Z Equivalent Steel Grades
| Standard | AS1397 | EN 10215 | ASTM A792M | JISG 3312 | JIS G 3302 | IS0 9354 |
| Material | G550+Z | S550GD+Z | G550+Z | SGLC570+Z | SGC550+Z | G550+Z |
Professional Supplier of Galvanized Steel Coils→Wanzhi Steel
Wanzhi Steel is an ISO 9001 and ISO 14001 certified company and a leading Chinese supplier of galvanized steel coils. For G550-grade materials, we offer not only GI steel but also GL steel and ZAM steel.
We also provide services such as slitting, cutting, forming, and pre-painting according to customer requirements, producing products like strip steel, sheets (flat/corrugated), and color-coated steel coils. If you have any needs, please feel free to contact us for more details.
