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Hot Dipped Galvanized Steel Coils from China Suppliers | High-Quality Factory Products for Various Industries
Description
Hot Dip Galvanized Steel Coil is produced by passing Cold Rolled Steel Coil through a Molten bath of Zinc at temperatures of around 460 degrees Celsius. The Zinc coating on the steel coil substrate acts as a barrier between the atmosphere and the surface of the metal. Further due to its lower chemical potential as compared to Iron (Fe), it is attacked and dissolved first, thereby offering superior corrosion resistance (cathodic protection).
ASTM A 653/A 653M is a standard specification for hot-dip galvanized steel coils. It sets the requirements for the composition and quality of the zinc coating to ensure consistent performance and durability.
The Zinc Coating Mass Range of SISCO steel is between 40 gsm – 360 gsm (grams per square meter of sheet metal). The Surface Finish & Visual Appearance of the Zinc coating of Gi Coils can be:
Regular Spangle
Minimized or Minimal Spangle
Zero Spangle (Extra Smooth)
Zinc Coated Steel Coil/Sheet (Galvanized Steel Coil)
| Application | Building Roofing/Window Automobiles Color Coated Base Sheet etc. |
| Standard | ASTM A653/A653M This is the American standard for cold rolled hot dip galvanized steel materials. JIS G 3302 This is the Japanese material standard associated with hot dipped galvanized steel coils. BS EN 10346:2009 which Supersedes BS EN 10327:2004 & BS EN 10326:2004 This is the European material standard for Continuously hot-dip coated steel flat products. |
| Grade | DX51D DX52D DX53D DX54D S220GD S250GD...S550GD |
| Surface | Oiled Chromated Dry + Chromated Anti-Finger |
| Zinc coat Weight (g/m2) | 40-350 |
| Internal Dia. | 508/610mm |
| Coil Weight | 3-7 Tons |
| Size | Thickness: 0.1-1.5mm Width: 600-1500mm |
Production Process
Frequently Asked Questions (FAQ)
What is Hot Dip Galvanized Steel Coil?
It is a steel coil produced by passing cold rolled steel through a molten bath of zinc at approximately 460 degrees Celsius, creating a protective barrier against corrosion.
What standard specifications does your galvanized steel meet?
Our products meet international standards including ASTM A653/A653M (American), JIS G 3302 (Japanese), and BS EN 10346:2009 (European).
What is the available range of zinc coating mass?
The zinc coating weight ranges from 40 gsm to 360 gsm (grams per square meter) depending on your application requirements.
What types of surface finishes are available?
We offer Regular Spangle, Minimized/Minimal Spangle, and Zero Spangle (Extra Smooth) surface finishes.
What are the typical dimensions of the steel coils?
The thickness ranges from 0.1mm to 1.5mm, and the width ranges from 600mm to 1500mm, with an internal diameter of 508/610mm.
What surface treatments are applied to the coils?
Coils can be supplied Oiled, Chromated, Dry + Chromated, or with Anti-Fingerprint treatment to suit different processing environments.