Overview of Galvanized Steel Coil
Galvanized steel coil is one of the hot-selling products of JINDALAI Steel. It is available in big, regular, small, and zero spangles. Compared to color steel coil, it is more affordable. Also, it has excellent corrosion resistance and durability. That’s why it is extensively used in construction, automobile, furniture, home appliances, etc. Due to its wide applications and good machinability, it is also a great investment project. As a wholesale supplier, JINDALAI Steel has its own factory to meet bulk orders timely. Also, we will offer a direct-sale price to lower your cost. If you are interested, please contact us for details!
Specification of Galvanized Steel Coil
| Name | Hot Dipped Galvanized Steel Strip | |||
| Standard | ASTM, AISI, DIN, GB | |||
| Grade | DX51D+Z | SGCC | SGC340 | S250GD+Z |
| DX52D+Z | SGCD | SGC400 | S280GD+Z | |
| DX53D+Z | SGC440 | S320GD+Z | ||
| DX54D+Z | SGC490 | S350GD+Z | ||
| SGC510 | S550GD+Z | |||
| Thickness | 0.1mm-5.0mm | |||
| Width | Coil/Sheet:600mm-1500mm Strip:20-600mm | |||
| Zinc Coating | 30~275GSM | |||
| Spangle | zero spangle, small spangle, regular spangle or large spangle | |||
| Surface Treatment | chromed, skinpass, oiled, slightly oiled, dry... | |||
| Coil Weight | 3-8ton or as client requirement. | |||
| Hardness | soft, hard, half hard | |||
| ID coil | 508mm or 610mm | |||
| Package: | Standard export package (Plastic film in the first layer,second layer is Kraft paper. Third layer is galvanized sheet) | |||
Thickness of zinc layer
Recommended zinc layer thickness for different usage environments
In general, Z stands for pure zinc coating and ZF refers to zinc-iron alloy coating. The number represents the thickness of the zinc layer. For example, Z120 or Z12 means the weight of zinc coating (double-sided) per square meter is 120 grams. While the zinc coating of the single side will be 60g/㎡. Below is the recommended zinc layer thickness for different use environments.
| Use Environment | Recommended Zinc layer Thickness |
| Indoor uses | Z10 or Z12 (100 g/㎡or 120 g/㎡) |
| Suburban area | Z20 and painted (200 g/㎡) |
| Urban or industrial area | Z27 (270 g/㎡) or G90 (American Standard) and painted |
| Coastal area | Thicker than Z27 (270 g/㎡) or G90 (American Standard) and painted |
| Stamping or deep drawing applications | Thinner than Z27 (270 g/㎡) or G90 (American Standard) to avoid coating peeling off after stamping |
How to Choose Base Metal Based on Applications?
| Uses | Code | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation at Break A80mm% |
| General uses | DC51D+Z | 140 ~ 300 | 270 ~500 | ≧22 |
| Stamping use | DC52D+Z | 140 ~ 260 | 270 ~ 420 | ≧26 |
| Deep drawing use | DC53D+Z | 140 ~ 220 | 270 ~ 380 | ≧30 |
| Extra deep drawing | DC54D+Z | 120 ~ 200 | 260 ~ 350 | ≧36 |
| Ultra-deep drawing | DC56D+Z | 120 ~ 180 | 260 ~ 350 | ≧39 |
| Structural uses | S220GD+Z S250GD+Z S280GD+Z S320GD+Z S350GD+Z S550GD+Z |
220 250 280 320 350 550 |
300 330 360 390 420 550 |
≧20 ≧19 ≧18 ≧17 ≧16 / |
Send Us Your Requirements
Size: the thickness, width, zinc coating thickness, coil weight?
Material and Grade: Hot rolled steel or cold rolled steel? And with spangles or not?
Application: What is the purpose of the coil?
Quantity: How many tons do you need?
Delivery: When is it needed and where is your port?
If you have special requirements, please let us know.
Detail Drawing
