Galvanized Steel Sheet & Coil Supplier
At Curtis Steel Co., we specialize in supplying high-quality galvanized steel sheets and coils that meet the rigorous demands of today’s construction, automotive, agricultural, telecommunications, and infrastructure industries. With over 45 years of experience and a reputation for reliable service, we are proud to be a trusted galvanized steel sheet supplier across the Southwest and beyond.
Our extensive inventory of galvanized steel—manufactured to ASTM A653 and ASTM A879 standards—ensures corrosion resistance, durability, and cost-efficiency for your next project.
Material Types
Our galvanized steel sheets and coils are available in a range of types to meet the needs of your project:
- Commercial Steel (CS Types A, B, and C)
- Forming Steel (FS Types A and B)
- Deep Drawing Steel (DDS Types A and C)
- Extra Deep Drawing Steel (EDDS)
- Structural Steel (SS) – further designated by Grades (33,37,40,50,80)
- High Strength Low Alloy Steel (HSLAS)
Why Choose Galvanized Steel from Curtis Steel?
As a leading galvanized steel coil and sheet supplier, Curtis Steel provides materials that stand up to time, weather, and wear. Galvanized steel is carbon steel coated with zinc to create a long-lasting barrier against rust and corrosion. We offer both hot-dipped galvanized (HDG) and electro-galvanized (EG) products, tailored to your performance and compliance needs.
Our galvanized offerings are ideal for:
- Structural framing
- Roofing and siding
- HVAC systems
- Truss plates and brackets
- Telecom enclosures
- Agricultural panels
- Automotive components
Each coil or sheet we supply is engineered for superior formability and strength—available in commercial, structural, and high-strength low alloy grades.
Hot-Dipped and Electro-Galvanized Coils: Built to ASTM Standards
Curtis Steel stocks galvanized steel coils and sheets that meet stringent industry requirements. Our hot-dipped galvanized products conform to ASTM A653, while our electro-galvanized materials meet ASTM A879 specifications.
We provide a range of zinc coating weights—G30, G40, G60, and G90—designed to deliver the exact level of protection your project requires. The continuous zinc coating provides galvanic protection, which means even small scratches and exposed edges resist rust and deterioration over time.
Finishes include:
Regular Spangle
Coil widths range from 36” to 60”, and gauges from 10 GA to 28 GA—ensuring flexibility for both heavy-duty industrial use and precision fabrication.
Galvanized Coils
| Size | Gauge |
|---|---|
| 36” | 16 - 28 |
| 48” | 16 - 28 |
| 60” | 16 - 26 |
Size Chart
Product-Coated: Hot Dipped Galvanized | ASTM A-653 | Grade: CS-B | Surface:Min Spangle | Treatment: CT-DryG6028GA (.0217 MAX - .0157 MIN)364860G3030GA (.0187 MAX - .0127 MIN)3648***
| Coating | Thickness | Width | Width | Width |
|---|---|---|---|---|
| G90 | 10GA (.1472 MAX - .1292 MIN) | *** | 48 | 60 |
| 11GA (.1323 MAX - .1143 Min) | *** | 48 | 60 | |
| 12GA (.1174 MAX - .0994 MIN) | *** | 48 | 60 | |
| 13GA (.1014 MAX - .0854 MIN) | *** | 48 | 60 | |
| 14GA (.0865 MAX - .0705 MIN) | 36 | 48 | 60 | |
| 16GA (.0696 MAX - .0575 MIN) | 36 | 48 | 60 | |
| 18GA (.0566 MAX - .0466 MIN) | 36 | 48 | 60 | |
| 20GA (.0506 MAX - .0356 MIN) | 36 | 48 | 60 | |
| 22GA (.0436 MAX - .0296 MIN) | 36 | 48 | 60 | |
| 24GA (.0316 MAX - .0236 MIN) | 36 | 48 | 60 | |
| 26GA (.0247 MAX - .0187 MIN) | 36 | 48 | 60 |
Diverse Applications Across Industries
Curtis Steel proudly serves over 1,500 customers, delivering galvanized steel products that are integral to:
- Commercial and residential construction
- Metal building fabrication
- Agricultural fencing and barns
- HVAC ducting and ventilation
- Automotive bodies and frames
- Utility and telecom cabinets
- Industrial shelving and storage
Whether you need galvanized steel for framing or finish work, our products are stocked, processed, and ready for just-in-time delivery to keep your projects moving forward.
Custom Processing & Fast Delivery
Our in-house processing capabilities—cut-to-length, slitting, shearing, and forming—help you reduce downtime and streamline production. With distribution centers in St. Louis and Chicago and fast regional delivery, Curtis Steel ensures your galvanized steel coil and sheet arrives on time and to exact specifications.
Our team is ready to recommend the ideal product for your application, from CS-B galvanized coil for forming to high-strength galvanized sheet for structural performance.
Ready to Order from a Proven Galvanized Steel Sheet Supplier?
Curtis Steel is committed to providing superior galvanized steel solutions backed by decades of service and industry expertise. Request a quote today or call us at 1-800-749-4621 to speak with a knowledgeable steel representative.