ASTM A653 G90 Galvanized Steel Coil & Sheets Regular Spangle with
1250mm 1500mm Width
| Material | SGCC SGCH SGC340 SGC400 SGC440 SGC490 SGC570 |
| SGHC SGH340 SGH400 SGH440 SGH490 SGH540 |
| DX51D DX52D DX53D DX54D DX55D DX56D DX57D |
| S220GD S250GD S280GD S320GD S350GD S400GD S500GD S550GD |
| SS230 SS250 SS275 |
| Thickness | 0.12 - 3.5 mm |
| Width | 600 mm to 1500 mm |
| Zinc coating | 40 - 275 g / m2 |
| Coil Internal Diameter | 508 / 610 MM |
| Coil Weight | 3 - 5 Tons |
| Annual Output Quantity | 1,500,000 MT |
| Hardness | Soft hard (60), medium hard (HRB60-85) , full hard (HRB85-95) |
| Surface structure | Norma, Matt, PVC film, wood grain, Flower Grained, embossed, etc |
| Color chart | RAL color number |
90 galvanized steel sheet is a coating thickness designation
specified under ASTM A653 galvanizing specification. It indicates a
zinc coating of 0.90 ounces per square foot (oz/ft2).
What is G90 galvanized steel coil?
G90 galvanized steel coils are cold-rolled steel sheets hot-dipped
in zinc coating for increased durability. Specifically, these
galvanized steel coils should have a triple-spot test (TST) average
minimum zinc coating weight of 0.90 ounces per square foot on both
sides or a minimum of 0.32 ounces per square foot on each side.
Meanwhile, if it’s under a single-spot test (SST), the steel must
have an average minimum coating weight of 0.80 ounces per square
foot on both sides.
The standard rule for protective coating is that the heavier the
coating, the higher its durability. Hence, G90 galvanized steel
coil has the most extended service life compared to other coating
designations, G60, G40, and G30. Products under the G90
specification are primarily used in high moisture environments
because they have higher resistance to corrosive environments.
What does G90 mean?
G90 refers to the coating type and the weight of the coating layer
applied to the steel coil or sheet.
‘G’ means the coating is galvanized, which means zinc-coated.
Meanwhile, the number ‘90’ stands for the weight of the zinc
applied to the steel. Manufacturers measure the coating weight
using the unit ounces per square foot (oz/ft2).
The coating designation G90 simply means that the two-sided
zinc-coating on the steel weighs 0.90 ounces per square foot.
