Introduction
Steel coils are the foundation of modern industry. From the automotive sector to construction, appliances to roofing—steel coils power the world around us. But not all steel coils are the same.
In this guide, we’ll break down the main types of steel coils, their unique properties, and their real-world applications — helping buyers, engineers, and importers make informed decisions.
At The Federal Steel, we supply and export all major types of steel coils—tailored to your industry needs.
🧱 1. Hot Rolled Steel Coils (HRC)
What It Is: Steel rolled at high temperatures (above 926°C), which makes it easier to shape and form.
Properties:
- Strong and malleable
- Ideal for structural use
- Scaled surface finish
Applications:
- Infrastructure and buildings
- Shipbuilding
- Industrial machinery
- Truck frames and guardrails
🧊 2. Cold Rolled Steel Coils (CRC)
What It Is: Steel further processed at room temperature after hot rolling to improve surface quality and precision.
Properties:
- Smooth surface
- High dimensional accuracy
- More strength than HRC
Applications:
- Home appliances (refrigerators, washing machines)
- Furniture and filing cabinets
- Precision engineering components
⚙️ 3. Galvanized Steel Coils (GI)
What It Is: Cold rolled steel coated with a layer of zinc for corrosion resistance.
Properties:
- Anti-rust
- Durable in outdoor environments
- Shiny, protective finish
Applications:
- Ducting and ventilation systems
- Fencing and gates
- Roofing sheets
- Electric panels
☀️ 4. Pre-Painted Galvanized Steel (PPGI)
What It Is: GI steel coated with color paint for aesthetic and enhanced protection.
Properties:
- Color-coated and ready for installation
- Excellent corrosion resistance
- Weather-resistant
Applications:
- Roofing sheets
- Cladding and panels
- Garages, warehouses, and commercial buildings
🌊 5. Galvalume Steel Coils (GL)
What It Is: Steel coated with aluminum-zinc alloy, offering superior corrosion resistance.
Properties:
- High heat reflectivity
- Longer life than GI
- Ideal for extreme weather
Applications:
- Coastal and humid environments
- Cold storage buildings
- Prefabricated shelters
🪞 6. Stainless Steel Coils (SS)
What It Is: Steel alloyed with chromium and other metals for strength and corrosion resistance.
Properties:
- High shine finish
- Non-magnetic options
- Long-lasting
Applications:
- Kitchen equipment
- Chemical tanks
- Medical devices
- Decorative and architectural uses
🔩 Bonus: Tin Free Steel (TFS) & Electrolytic Tin Plate (ETP)
- TFS: Chromium-coated for packaging without the use of tin
→ Used in battery shells, electronic parts - ETP: Tin-coated steel for corrosion-resistant cans
→ Used in food packaging and paint containers
Why This Matters for You
Choosing the wrong coil type can result in:
- Rust and product failure
- Waste of resources
- Extra cost in post-processing
At Federal Steel, we help you:
- Select the right coil for your application
- Offer custom sizing and export packaging
- Provide mill test certificates and expert advice
Final Thoughts
Knowing the difference between HRC, CRC, GI, PPGI, GL, and SS isn’t just technical—it’s strategic. It means higher performance, longer life, and better value for your business.
Still unsure which coil fits your project?
📞 Get in touch with Federal Steel — your global steel export partner.
