Coated steel refers to carbon or low-alloy steel (usually carbon steel) that is covered with a protective layer to enhance corrosion resistance, surface quality, and durability. At Huaxiao-Alloy, we specialize in the export of high-performance coated steel materials used across construction, automotive, appliances, and industrial manufacturing.
As a trusted coated steel supplier, we offer full-grade and surface solutions tailored to your application needs.
Highest Quality Steel
Quick Delivery
Professional Service
Flexible payment options
Coated Steel We Supply
Below is a breakdown of our main coated steel products:
1. Hot-Dip Galvanized Steel (GI)
Standard: ASTM A653 / JIS G3302 / EN 10346
Coating: Pure Zinc (Z100–Z600)
Features: Strong corrosion resistance, excellent weldability
Applications: Roofing sheets, wall panels, ductwork, fences
2. Electro-Galvanized Steel (EG)
Standard: ASTM A879 / JIS G3313
Coating: Electrolytic Zn (light & uniform coating)
Features: Superior surface finish, ideal for painting
Applications: Automotive body panels, home appliances
3. Galvalume Steel (GL / AZ)
Standard: ASTM A792 / JIS G3321
Coating: Zn-55%Al (Aluminum-Zinc Alloy)
Features: 3x corrosion resistance compared to GI
Applications: Industrial roofing, solar panel backing, coastal structures
4. Prepainted Galvanized Steel (PPGI)
Base Metal: GI
Topcoat: PE, SMP, PVDF available
Features: UV resistance, vibrant appearance, anti-fading
Applications: Sandwich panels, garage doors, billboard signs
5. Prepainted Galvalume Steel (PPGL)
Base Metal: GL
Topcoat: Custom colors & finishes
Features: Excellent weather resistance, long-lasting gloss
Applications: Outdoor buildings, architectural facades
6. Zinc-Aluminum-Magnesium Coated Steel (ZAM)
Coating: Zn-Al-Mg alloy
Features: Ultra-high corrosion resistance, especially in salt spray environments
Applications: Guardrails, greenhouses, offshore platforms
7. Tinplate (TP) & Tin-Free Steel (TFS)
Tinplate: Electrolytic Tin Coated Steel
TFS: Chromium-Coated Steel
Applications: Food packaging, bottle caps, paint cans
Product Specifications
| Type | Coating | Thickness (mm) | Width (mm) | Coil Weight (Tons) |
|---|---|---|---|---|
| GI / EG | Zn | 0.2–3.0 | 600–1500 | 3–15 |
| GL / AZ | Zn-55%Al | 0.25–2.0 | 914–1250 | 3–10 |
| PPGI / PPGL | Zn / Zn-Al | 0.3–1.5 | 600–1250 | 3–8 |
| ZAM | Zn-Al-Mg | 0.3–2.0 | 800–1250 | 3–10 |
Custom coating thickness, color codes (RAL), and surface treatments (chromated, oiled, dry, skin pass) are available upon request.
Comprehensive Table of Coated Metal Products
| No. | Product Name | Abbreviation | Coating Type | Base Metal | Typical Applications |
|---|---|---|---|---|---|
| 1 | Hot-Dip Galvanized Steel | GI | Zinc (Z) | Carbon Steel | Construction, ductwork, HVAC |
| 2 | Electro-Galvanized Steel | EG | Zinc (Electrolytic) | Cold-Rolled Steel | Automotive panels, appliances |
| 3 | Galvalume Steel | GL / AZ | 55% Aluminum-Zinc Alloy | Carbon Steel | Roofing, solar back panels |
| 4 | Pre-Painted Galvanized Steel | PPGI | Zinc + Organic Coating (PE/SMP/PVDF) | GI | Sandwich panels, building facades |
| 5 | Pre-Painted Galvalume Steel | PPGL | AZ + Organic Coating (PE/SMP/PVDF) | GL | Exterior siding, containers |
| 6 | Hot-Dip Aluminum Coated Steel | AL-Coated | Pure Aluminum | Carbon Steel | Heat-resistant parts, ovens |
| 7 | Zinc-Aluminum-Magnesium Coated Steel | ZAM | Zn-Al-Mg Alloy | Cold-Rolled Steel | Agricultural, marine, infrastructure |
| 8 | Tinplate | TP | Electrolytic Tin (Sn) | Cold-Rolled Steel | Food cans, aerosol cans |
| 9 | Tin-Free Steel / Electrolytic Chromium Coated | TFS / ECCS | Chromium / Chromium Oxide | Cold-Rolled Steel | Beverage caps, chemical cans |
| 10 | Galvannealed Steel | GA | Zinc-Iron Alloy | Carbon Steel | Automotive body parts |
| 11 | Nickel-Coated Steel | Ni-Coated | Nickel (Ni) | Low-Alloy Steel | Batteries, electronics |
| 12 | Copper-Coated Steel | Cu-Coated | Copper (Cu) | Mild Steel | Welding rods, electrical wiring |
| 13 | Lead-Coated Steel | Pb-Coated | Lead (Pb) | Carbon Steel | Roofing, radiation shielding |
| 14 | Silver-Coated Steel | Ag-Coated | Silver (Ag) | Stainless / Alloy Steel | Sensors, aerospace connectors |
| 15 | Gold-Coated Steel | Au-Coated | Gold (Au) | Alloy Steel | Precision electronics, aerospace |
| 16 | Chrome-Coated Steel | Chrome-Coated | Chromium (Cr) | Cold-Rolled Steel | Appliance trims, decorative panels |
| 17 | Zinc-Aluminum Coated Steel | GF | Zn-5%Al Alloy | Structural Steel | Guardrails, structural beams |
| 18 | Pre-Painted Aluminum Coil | PPAL | Polyester / PVDF / Epoxy Coating | Aluminum Coil (3003/1100) | Ceilings, curtain walls, cladding |
| 19 | PVDF-Coated Steel | PVDF-Coated | Polyvinylidene Fluoride (PVDF) | GI / GL | High-corrosion environments |
| 20 | Plastic-Coated Steel | Plastic-Coated | PVC, PE, PET | GI / GL | Refrigerators, decorative interiors |
| 21 | Anti-Fingerprint Coated Steel | AFP Steel | Zinc or AZ + Anti-Fingerprint Coating | GI / GL / ZAM | Home appliances, elevators, interior panels |
Industries We Serve
At Huaxiao-Alloy, our coated steel products are engineered to meet the requirements of global industries:
Construction – Roofing, wall cladding, structural frames
Automotive – Car body panels, chassis, seat reinforcements
Home Appliances – Refrigerator doors, washing machines, microwave shells
HVAC & Ducting – Ventilation ducts, air conditioning units
Packaging – Food cans, closures, chemical containers
Marine & Agriculture – Salt-resistant fencing, greenhouse structures
Why Choose Huaxiao-Alloy?
Global Export Experience – Serving over 40 countries with reliable supply chains
Strict Quality Control – Full inspection on coating adhesion, salt spray test, and dimensional tolerance
Custom Processing – Slitting, cutting, recoiling, color coating
Flexible MOQ – Supporting both bulk and small orders
Timely Delivery – Strong logistics support from China’s major ports
Certifications & Compliance
ISO 9001:2015 Certified
ROHS / REACH Compliant
SGS / BV / TUV Inspection Support
Request a Quote or Sample
Looking for a reliable coated steel supplier? Contact Huaxiao-Alloy today for:
Technical datasheets
Free samples
Competitive pricing
Customized dimensions
A: GI uses pure zinc, while GL is a zinc-aluminum alloy offering superior corrosion resistance.
A: Yes, we offer RAL color matching and special finishes (matte, wood grain, etc.).
A: For standard GI/PPGI coils: 5 tons; For custom orders: negotiable.
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