Galvanized Channel Steel is a hot-dip galvanized “U”-shaped section profile that offers exceptional performance in load-bearing capacity, ease of installation, and long-term corrosion resistance. It is widely used in building steel structures, machinery manufacturing, vehicle frames, bridge supports, storage racking, and electrical engineering projects. As a professional steel supplier, Wanzhi Group provides a complete range of galvanized channel steel solutions, covering standard specifications to fully customized options.
Galvanized Channel Steel Specifications
| Model | Size (mm) | Cross-Sectional Area (cm²) | Theoretical Weight (kg/m) | |||
| h | b | d | t | |||
| 5 | 50 | 37 | 4.5 | 7 | 6.93 | 5.44 |
| 6.3 | 63 | 40 | 4.8 | 7.5 | 8.44 | 6.63 |
| 8 | 80 | 43 | 5 | 8 | 10.24 | 8.04 |
| 10 | 100 | 48 | 5.3 | 8.5 | 12.74 | 10.00 |
| 12.6 | 126 | 53 | 5.5 | 9 | 15.69 | 12.37 |
| 14a | 140 | 58 | 6 | 9.5 | 18.51 | 14.53 |
| 14b | 140 | 60 | 8 | 9.5 | 21.31 | 16.37 |
| 16a | 160 | 63 | 6.5 | 10 | 21.95 | 17.23 |
| 16 | 160 | 65 | 8.5 | 10 | 25.15 | 19.74 |
| 18a | 180 | 68 | 7 | 10.5 | 25.69 | 20.17 |
| 18 | 180 | 70 | 9 | 10.5 | 29.29 | 22.99 |
| 20a | 200 | 73 | 7 | 11 | 28.83 | 22.63 |
| 20 | 200 | 75 | 9 | 11 | 32.83 | 25.77 |
| 22a | 220 | 77 | 7 | 11.5 | 31.84 | 24.99 |
| 22 | 220 | 79 | 9 | 11.5 | 36.24 | 28.45 |
| 25a | 250 | 78 | 7 | 12 | 34.91 | 27.47 |
| 25b | 250 | 80 | 9 | 12 | 39.91 | 31.39 |
| 25c | 250 | 82 | 11 | 12 | 44.91 | 35.32 |
| 28a | 280 | 82 | 7.5 | 12.5 | 40.02 | 31.42 |
| 28b | 280 | 84 | 9.5 | 12.5 | 45.62 | 35.81 |
| 28c | 280 | 86 | 11.5 | 12.5 | 51.22 | 40.21 |
| 32a | 320 | 88 | 8 | 14 | 48.70 | 38.22 |
| 32b | 320 | 90 | 10 | 14 | 55.10 | 43.25 |
| 32c | 320 | 92 | 12 | 14 | 61.50 | 48.28 |
| 36a | 360 | 96 | 9 | 16 | 60.89 | 47.80 |
| 36b | 360 | 98 | 11 | 16 | 68.09 | 53.45 |
| 36c | 360 | 100 | 13 | 16 | 75.29 | 59.10 |
| 40a | 400 | 100 | 10.5 | 18 | 75.05 | 58.91 |
| 40b | 400 | 102 | 12.5 | 18 | 83.05 | 65.19 |
| 40c | 400 | 104 | 14.5 | 18 | 91.05 | 71.47 |
Material & Standards
- Standards: ISO 9001:2008, ISO 630, JIS, ASTM, BS 1387:1985, GB/T 3091-2001, GB/T 13793-92, ISO 630/E235B, JIS G3101, JIS G3131, JIS G3106
- Materials: Q195, Q215, Q235B, Q345B, S235JR/S235, S355JR/S355, SS440/SM400A/SM400B
- Technique: Hot Rolled, Casting
- Surface Treatment: Oiled, Sand Blasting, Galvanizing, Painting, Cutting (as per customer’s request)
- Packaging: Water-Proof Plastic Cloth, Woven Bags, PVC Package, Steel Strips in Bundles, Customized as required
Types & Characteristics
- Standard Channel Steel: Narrow, thick flanges; vertical web; small fillet radius. Applications: Building columns, bridge supports, heavy equipment bases, plant trusses.
- Light Channel Steel: Wide, thin flanges; thinner web; large fillet radius. Applications: Building purlins, medium-duty racking beams, equipment supports, interior decorative structures.
- Wide Flange Channel Steel: Extremely wide flanges; uniform flange/web thickness; large fillet radius. Applications: Long-span plant main structures, auxiliary supports for heavy bridges, ultra-heavy equipment frames.
- Inward-Curled Channel Steel: Flange ends curled inward. Applications: PV mounting systems, traffic guardrails, machinery vibration bases, coastal high-wind area structures.
- Outward-Curled Channel Steel: Flange ends curled outward, forming an “Ω” shape. Applications: Container underframes, large storage racking columns, building curtain wall keels.
- Unequal Flange Channel Steel: Uneven flange widths; inclined web. Applications: Sloped roof supports, special architectural structures, unique equipment load-bearing frames.
Features of Galvanized Channel Steel
Excellent Structural Load-Bearing Capacity
- The “U”-shaped cross-section provides superior bending and torsional resistance. The flange ends are designed for easy connection and assembly, making it a primary load-bearing component in medium to large steel structures.
Long-Term Corrosion Resistance & Low Maintenance
- The hot-dip galvanized coating offers both a physical barrier and cathodic protection. Service life in typical industrial atmospheres can reach 25–50 years, significantly reducing lifecycle maintenance costs.
Easy Installation & Strong Compatibility
- Standard hole spacing and flat flange surfaces allow quick connection via bolting, welding, and other methods, adapting to complex engineering assembly requirements.
Neat Appearance & Industrial Aesthetic
- Uniform silver-gray surface requires no secondary painting for exposed structures, combining functionality with modern industrial aesthetics.
Custom Manufacturing Services
Wanzhi Group provides comprehensive customization to meet diverse special project needs:
Cross-Section Customization: Height up to 600mm, flange width up to 200mm, web thickness up to 20mm
Length Customization: Cutting from 1m to 18m, with options for end beveling, drilling, welding, etc.
Zinc Coating Customization: Zinc coating weight from 30–350g/m², adjustable based on corrosion environment levels
Material Upgrades: Options include Q390B, Q420B, SS400, ASTM A36, and more
Wanzhi Group Factory
Location: Xingfu Town, Boxing County, Binzhou City, Shandong Province
Facilities: Equipped with large rolling production lines, automated hot-dip galvanizing lines, and finishing processing equipment
Quality Certifications: ISO9001, ISO14001, ISO45001, CE, ASTM A123, etc.
Testing Equipment: Universal material testing machines, spectrometers, coating thickness gauges, salt spray test chambers, impact testers, etc.
Delivery Capability: Standard specifications available from stock. Lead time for orders: 5–45 working days
Galvanized Channel Steel vs. Galvanized U-Section Steel
| Aspect | Galvanized Channel Steel | Galvanized U-Section Steel |
| Design | Standard U-shape | Customized U-shape |
| Cross-Section | – Flanges: Narrow and thick – Web: Vertical, uniform thickness – Fillet: Small radius, compact |
– Flanges: Wide and thin – Web: Can be thinned as needed – Fillet: Large radius, stress-resistant |
| Mechanical Properties | – Load-bearing: Strong – Torsional resistance: Excellent – Bending resistance: High rigidity |
– Load-bearing: Moderate – Torsional resistance: Average – Bending resistance: Good flexibility |
| Cost | Higher initial cost | Lower initial cost |
| Installation | Many standardized fittings, high compatibility and installation efficiency | Flexible for non-standard scenarios, reduces welding work, but requires custom fittings |
Galvanized Channel Steel vs. Galvanized C-Channels
| Aspect | Galvanized Channel Steel | Galvanized C-Channels |
| Cross-Section Shape | U-shaped, inward-curled flanges, good closure | C-shaped, outward-extended flanges, open section |
| Load-Bearing Features | Strong bending/torsional resistance, ideal for vertical loads | Good bending resistance, lightweight, suitable for horizontal purlins |
| Connection Methods | Flat flanges for easy bolting/welding | Typically paired with self-drilling screws for quick installation |
| Typical Thickness | Thicker (4.5–14mm), high load capacity | Thinner (1.6–3.5mm), lightweight design |
| Main Applications | Main beams, supports, heavy frames, equipment bases | Roof/wall purlins, light supports, ceiling joists |
| Cost Comparison | Higher unit price, but high load efficiency | Lower unit price, cost-effective |
| Suitable Span | Medium to large spans (3–12m) | Small to medium spans (1–6m) |
Galvanized Channel Steel vs. Plain Carbon Steel Channels
| Aspect | Galvanized Channel Steel | Plain Carbon Steel Channels (Uncoated) |
| Corrosion Resistance | Excellent – active zinc protection | Poor – relies on passive protection like paint |
| Service Life | 25–50 years (depending on environment) | 5–15 years (requires regular maintenance) |
| Initial Cost | Higher (approx. 40–60% more) | Low |
| Lifecycle Cost | Low (minimal to no maintenance) | High (cumulative maintenance and replacement costs) |
| Installation Efficiency | High – no on-site anti-corrosion treatment needed | Low – requires on-site painting or fireproofing |
| Environmental Impact | Favorable – zinc is recyclable, clean process | Moderate – paints may contain volatile compounds |
| Suitable Environments | Universal – indoor/outdoor, especially humid/industrial corrosive environments | Limited to dry indoor or short-term outdoor use |
Wanzhi Group possesses a complete industrial chain capability, from raw material rolling to surface treatment. Combined with a rigorous quality control system, we have provided one-stop galvanized steel channel solutions to customers in the construction and other industries worldwide. Leave us a message to tell us your needs and get a free quote!