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Galvalume Steel Coil, also called GL coil, Al-Zn coated steel coil, or galvalume sheet coil, is a steel coil coated with an aluminum-zinc alloy layer. The coating commonly contains aluminum, zinc, and silicon, providing excellent corrosion resistance, heat reflectivity, and surface durability for roofing, wall panels, appliances, prepainted steel substrates, and construction projects.
As a Galvalume Steel Coil and GL Coil stockist and supplier, SKSteel supplies galvalume steel coil and sheet with full sizes available, multiple steel grades, stable Al-Zn coating, different surface treatments, mill test certificates, slitting and cut-to-length service, and fast delivery worldwide.
Type of Galvalume Steel Coil / GL Coil SKSteel can supply
| Item | Description |
|---|---|
| Product | Galvalume Steel Coil / GL Coil / Al-Zn Coated Steel Coil |
| Standard | ASTM A792, JIS G3321, EN10346, AS1397, GB/T 14978 or Customized |
| Steel Grade | DX51D+AZ, DX52D+AZ, SGLCC, SGLCD, G550, CS Type A/B/C or Customized |
| Production Method | Hot-Dip Al-Zn Alloy Coated |
| Thickness | 0.12mm-4.0mm or Customized |
| Width | 600mm-1500mm or Customized |
| Coating | AZ30-AZ200, AZ50-AZ150 or Customized |
| Coating Composition | Aluminum-Zinc Alloy Coating, commonly Al-Zn-Si |
| Spangle | Regular Spangle, Small Spangle or Customized |
| Surface Treatment | Chromated, Oiled, Unoiled, Anti-Fingerprint, Passivated or Customized |
| Coil Weight | 3-12MT or Customized |
| Processing | Slitting, Cut-to-Length, Leveling, Shearing Available |
| Packing | Standard Export Packing or Customized |
| Certificate | MTC EN10204 3.1 Available |
Chemical composition varies according to the selected base steel grade and standard. The following table is a common reference for carbon steel galvalume steel coil materials.
| Element | Content (%) |
|---|---|
| C | According to steel grade requirement |
| Si | According to steel grade requirement |
| Mn | According to steel grade requirement |
| P | Controlled by applicable standard |
| S | Controlled by applicable standard |
| Property | Value |
|---|---|
| Yield Strength | According to grade and standard |
| Tensile Strength | According to grade and standard |
| Elongation | According to grade and standard |
| Formability | According to grade and application requirement |
| Paint Adhesion | Tested according to project or standard requirements |
| Coating Flexibility | According to paint system and application requirement |
| Color Difference | Controlled according to order and inspection requirements |
| Surface Quality | According to selected color, gloss, and surface finish |
Applications
Challenges & Needs
Poor Weathering Resistance
Base Metal Cracking
Low Environmental Adaptability
Our Supply Solutions
Our Manufacturing Strength
- Large Ready Stock
- Full Thickness, Width, and Al-Zn Coating Range Available
- Competitive Export Pricing
- Multiple Steel Grades Available
- Slitting and Cut-to-Length Service Available
- Mill Test Certificates Available
- Fast Global Delivery
- Professional Export Support
Value-Added Services
Deep Pre-processing
Coating Optimization
End-to-End Tracking
Smart Logistics
Collaboration with SK STEEL
FAQ for Steel Supply Services
What is Galvalume Steel Coil?
Galvalume Steel Coil is a steel coil coated with an aluminum-zinc alloy layer to improve corrosion resistance, heat reflectivity, and surface durability. It is commonly supplied in coil form and can be processed into galvalume sheets, roofing sheets, and formed parts.
What grades can SKSteel supply for Galvalume Steel Coil / GL Coil?
SKSteel can supply DX51D+AZ, DX52D+AZ, SGLCC, SGLCD, G550, ASTM A792 CS Type A/B/C and other customized galvalume steel grades according to project requirements.
What is the difference between Galvalume Steel Coil and Galvanized Steel Coil?
Common Al-Zn coating includes AZ30, AZ50, AZ70, AZ100, AZ120, AZ150 and higher coating weights according to project requirements. Customized coating can also be supplied.
Can Galvalume Steel Coil be cut to sheet size?
Yes. SKSteel can provide slitting, leveling, shearing, and cut-to-length galvalume sheet service according to customer size and packing requirements.
Can SKSteel supply anti-fingerprint Galvalume Steel Coil?
Yes. Regular spangle, small spangle, oiled, unoiled, passivated, chromated, and anti-fingerprint galvalume steel coil can be supplied according to project requirements.