20 Gauge Galvanized Steel
Wanzhi Steel supplies high-quality 20-gauge galvanized steel sheets with strong corrosion resistance and custom fabrication capabilities. These products comply with ASTM, JIS, EN, and GB standards. Please feel free to contact us if you have any questions.
Thickness: 1.006 mm (0.0396 inches)
Width Range: 600-1500mm
Supply Form: Coil, sheet, strip, pipe
Ensure product quality and transportation
20 gauge is the standard thickness for 20-gauge galvanized steel. For details, please refer to the galvanized steel gauge conversion chart. This page shows that 20 gauge corresponds to a thickness of approximately 1.0058 mm (0.0396 inches).
20 gauge (1.0058 mm) galvanized steel offers excellent mechanical properties, a high cost-effectiveness, and is widely used.
Specifications
Properties | Specifications |
Thickness | 1.006 mm (0.0396 inches) |
Width Range | 600-1500mm |
Standard | ASTM, EN, GB, JIS |
Common Materials | SPCC, SGCC, CGCC, Q195, Q235, DX51D, DX52D, DX53D, S250GD, S350GD, S550GD, CS Type A, CS Type B |
Spangle Type | Zero Spangle, Small Spangle, Regular Spangle, Big Spangle |
Galvanizing Type | Hot-dip galvanized (common), electrogalvanized |
Zinc Coating Weight | 30-275 g/m² (double-sided) |
Supply Form | Coil, sheet, strip, pipe |
Mechanical Properties | Tensile strength: ≥967 MPa, yield strength: ≥831 MPa (based on 20# steel) |
Surface Treatment | Oiled/unoiled, passivated, fingerprint-resistant, pre-coated (PPGI Coil) |
Processing Services | Cutting, slitting, bending, stamping, press forming, etc. |
MOQ | 10 tons |
Packaging | Standard export package or as per your requirements |


20 Gauge Galvanized Steel Applications
- Architecture and structures: Primarily used in non-load-bearing or lightly load-bearing areas such as roofs, walls, ventilation ducts, cable trays, and highway guardrails.
- Industrial manufacturing: Ideal for housings of equipment cases, distribution cabinets, and control boxes. It is also commonly used in agricultural machinery protective covers, warehouse shelving, and logistics pallets.
- Home and agriculture: Used in metal furniture frames, home ceiling joists, livestock and poultry roofs, fencing, and grain storage equipment.


Processing Services We Offer
- Processing technologies: Cutting, punching, bending, welding, slitting, and decoiling are supported.
- Surface treatments: In addition to conventional galvanizing, pre-painting, embossing, and printing are also available to enhance aesthetics and functionality.
- Customization capabilities: Dimensions, zinc coatings (e.g., G90, Z120), and packaging (e.g., metal packaging or moisture-proof paper) can be customized to meet customer needs.
Packaging


FAQ about 20-gauge Galvanized Steel
Q: Which is thicker, 20-gauge or 22-gauge galvanized steel?
The larger the gauge, the thinner the thickness, so 20-gauge galvanized steel is thicker.
Q: How much does a square meter of 20-gauge galvanized steel weigh?
The formula for calculating the weight of galvanized steel sheet = length * width * thickness * 7.85 = 1 * 1 * 1.0058 * 7.85 ≈ 7.9 kg, so the weight is 7.9 kg.
Q: What is the difference between G90 and Z180?
Both indicate the weight of the zinc coating, but the standards are different. G90 = 0.90 oz/ft² ≈ 180 g/m².
- G90 is a notation used in accordance with ASTM A653, indicating a total zinc coating weight of 0.90 oz/ft² (ounces per square foot) on both sides.
- Z180 is a designation in accordance with the European/international standard EN ISO 1461, indicating a total zinc coating weight of 180 g/m² (grams per square meter) on both sides.
Why Choose Wanzhi Steel?
We are a professional galvanized steel manufacturer in China. Here are some reasons to choose us:
- We are ISO 9001, ISO 14001, and trusted supplier certified.
- We use high-quality raw materials as substrates to ensure the quality of the finished galvanized steel.
- Advanced production technology and professional technicians ensure uniform distribution of the zinc coating.
- We have a professional testing center that thoroughly inspects the zinc coating, specifications, and performance before shipment.
If you have any galvanized steel product purchase needs, please feel free to contact us. Our minimum order quantity is 5-10 tons. Larger quantities offer better prices. We look forward to hearing from you!
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