Product Overview
Galvanized C Channel
Our Galvanized C Channel (also known as Galvanized Steel C Section, HDG C Channel, GI C Channel, C Purlin, Structural C Channel, ASTM A36/A572 C-Channel, and EN 10279 U-Profile) is manufactured from high-strength carbon steel and protected with a uniform hot-dip galvanized (HDG) or pre-galvanized (GI) zinc coating for exceptional corrosion resistance. Available in a wide range of sizes, gauges, wall thicknesses, and lengths, our C-channels conform to ASTM A36, A572 Grade 50, ASTM A653, ASTM A123, EN 10025, EN 10279, and JIS G3192 standards, making them suitable for construction framing, solar mounting structures (PV racking), machinery support, and industrial fabrication.
Ideal for global B2B buyers who require high strength, consistent dimensions, and long-term weather protection, our galvanized C channels deliver reliability in both structural and outdoor applications.
Core parameters
Material: Q235B/Q355B mild steel (customizable)
Galvanized coating: Z60-Z275 (standard galvanized coating 60-275g/m², higher corrosion protection grade optional)
Surface treatment: Hot-dip galvanized, uniform and flawless
Length: 1m-12m (support custom cutting)
Thickness: 1.0mm-6.0mm (common 2.0mm/3.0mm)
Standard sizes (can be customized on request):
| Model | Height (H) | Base width (B) | Leg width (C) | Thickness (T) | Unit weight (kg/m) |
|---|---|---|---|---|---|
| C80×40×15×2.0 | 80mm | 40mm | 15mm | 2.0mm | 3.01kg/m |
| C100×50×20×2.5 | 100mm | 50mm | 20mm | 2.5mm | 4.50kg/m |
| C120×60×20×3.0 | 120mm | 60mm | 20mm | 3.0mm | 6.20kg/m |
| C150×70×25×4.0 | 150mm | 70mm | 25mm | 4.0mm | 10.50kg/m |
| C80×40×15×2.0 | 80mm | 40mm | 15mm | 2.0mm | 3.01kg/m |
| C100×50×20×2.5 | 100mm | 50mm | 20mm | 2.5mm | 4.50kg/m |
| C120×60×20×3.0 | 120mm | 60mm | 20mm | 3.0mm | 6.20kg/m |
| C150×70×25×4.0 | 150mm | 70mm | 25mm | 4.0mm | 10.50kg/m |
Hot-Dip Galvanized C Channel – Common Dimensions
| Size (H × B) mm | Web Thickness (t1) mm | Flange Thickness (t2) mm | Weight (kg/m) | Typical Length |
|---|---|---|---|---|
| 80 × 40 | 3.0–4.0 | 4.5 | 6.0–7.1 | 6m / 12m |
| 100 × 50 | 4.0–5.0 | 5.0 | 8.0–10.0 | 6m / 12m |
| 120 × 50 | 4.0–6.0 | 6.0 | 10.4–13.4 | 6m / 12m |
| 140 × 60 | 4.5–6.0 | 6.0 | 13.0–15.7 | 6m / 12m |
| 150 × 75 | 5.0–6.5 | 7.0 | 17.9–19.6 | 6m / 12m |
| 160 × 70 | 5.0–7.0 | 7.4 | 18.0–22.4 | 6m / 12m |
| 180 × 75 | 5.0–7.5 | 7.5 | 20.0–24.7 | 6m / 12m |
| 200 × 80 | 5.2–8.0 | 8.0 | 22.4–30.6 | 6m / 12m |
| 250 × 90 | 6.0–10.0 | 9.0 | 31.1–45.0 | 6m / 12m |
| 300 × 100 | 7.0–12.0 | 10.0 | 36.7–60.0 | 6m / 12m |
Imperial Sizes (Inch)
| Size (H × B) | Thickness (t) | Weight (lbs/ft) | Equivalent Metric |
|---|---|---|---|
| 3" × 1.41" | 0.120–0.188" | 3.5–5.4 | 75 × 35 mm |
| 4" × 1.58" | 0.120–0.200" | 4.5–6.8 | 100 × 40 mm |
| 6" × 1.92" | 0.140–0.250" | 7.2–12.0 | 150 × 50 mm |
| 8" × 2.26" | 0.160–0.300" | 10.0–18.2 | 200 × 60 mm |
| 10" × 2.52" | 0.190–0.350" | 12.0–25.0 | 250 × 65 mm |
| 12" × 3.00" | 0.250–0.375" | 20.0–30.0 | 300 × 75 mm |
Galvanized Coating Options
| Coating Type | Zinc Thickness | Standard |
|---|---|---|
| GI (Pre-Galvanized) | Z120–Z275 (12–27 µm) | ASTM A653 |
| HDG (Hot-Dip Galvanized) | 40–150 µm | ASTM A123 / ISO 1461 |
Custom Manufacturing Options
We support:
Custom sizes up to 400 mm height
Slotted / perforated C channels
Solar mounting C channels
Pre-galvanized or HDG
Bending, punching, welding, bundling
OEM production for EPC contractors & wholesalers
Product Advantages
High strength
The cold forming process improves the structural stability and has excellent load-bearing performance.
Anti-rust and durable
The galvanized layer effectively resists moisture, acid and alkali environment, and has a service life of more than 20 years.
Lightweight
Lighter than traditional angle steel, saving transportation and installation costs.
Flexible adaptation
support non-standard customization (size, hole position, pre-stamping, etc.).
Key Features of Galvanized C-channel Steel
► Material - Typically made from mild steel or high-strength low-alloy (HSLA) steel.
► Galvanization - Coated with a laver of zinc (hot-dip or electro-galvanized) for corrosion resistance.
► shape - Resembles the letter "C" with a flat back and flanges that extend perpendicularly.
► strength & Durability - Provides good structural support while being lightweight.
► Versatile Applications - Used in steel framing, building supports, roof trusses, fencing, racks, and vehicle chassis.
Application scenarios
🏗️ Building structure: roof purlins, wall beams, steel structure frame
🏭 Industrial facilities: equipment supports, cable trays, storage shelves
🔩 Decoration engineering: curtain wall keel, ceiling support, partition skeleton
Inspection & Quality Assurance
We operate strict QA/QC systems:
ASTM / EN dimensional tolerances
Zinc thickness measurement (µm)
Mechanical property tensile tests
Chemical composition spectroscopy testing
Surface, straightness & flatness inspection
Third-party inspection: SGS, BV, TUV
MTC (Mill Test Certificate) available for all shipments
Ready to source high-quality Galvanized C Channels for your project?
Our engineering and export team provides fast quotations, technical support, drawings review, and customized production for OEM/ODM clients.
Whether you are a distributor, EPC contractor, or structural fabrication company, we ensure stable quality, competitive pricing, and on-time delivery to support your business growth.
👉 Get a free quotation today - professional support within 12 hours.
Our address
Room 4107, Runfeng Building, Sanqiao New Street, Weiyang District, Xi'an City, Shaanxi Province
Phone Number
+86 15769214734
office@dongmjd.com
FAQ
1. What engineering standards and tolerances do your galvanized C channels meet?
Our C channels strictly follow ASTM A36 / A572 / A6, EN 10025 / EN 10279, JIS G3192, and GB/T 706.
Dimensional tolerances comply with:
Web/Flange deviation: ±1.0–1.5 mm
Twist tolerance: ≤2 mm per meter
Length tolerance: ±5 mm (standard)
Certificates: MTC, EN10204 3.1, SGS/BV/TUV available.
2. What is the expected service life of HDG galvanized C channels in outdoor environments?
Service life depends on zinc layer thickness and environment:
Z275 (GI): 10–20 years
HDG 60–80 µm: 25–35 years
HDG 100–150 µm: 35–50+ years (coastal & high-humidity environments)
We follow ISO 9223 corrosion category classification for lifetime estimation.
3. What load-bearing data or structural calculations can you provide for engineering projects?
We can provide:
Section modulus (Wx / Wy)
Moment of inertia (Ix / Iy)
Yield load analysis
Wind load and snow load recommendations (for solar mounting)
Finite element analysis (FEA) on request
These calculations support construction, PV mounting, and industrial framing designs.
4. How do you control zinc coating quality and ensure uniform corrosion protection?
Every batch undergoes:
Zinc thickness test using coating gauge (µm)
Adhesion test according to ASTM A123
Visual inspection for runs, drips, pinholes, and bare spots
Salt spray test (optional) according to ASTM B117
We guarantee uniform, continuous zinc coverage.
5. Can the C channels be supplied with punched holes for bolted solar structures or industrial frames?
Yes. Hole patterns can be customized, including:
Round holes
Slotted long holes
Keyhole-type mounting holes
PV racking slot patterns
Punching accuracy: ±0.5 mm, CNC-controlled.
6. How do galvanized C channels perform compared with aluminum and stainless steel in outdoor structural use?
| Material | Strength | Weight | Corrosion | Cost | Best Use Case |
|---|---|---|---|---|---|
| Galvanized steel | High | Heavy | Very good | Low | Construction, solar farms |
| Aluminum | Medium | Light | Good | Medium | Rooftop PV, lightweight frames |
| Stainless steel | Very high | Heavy | Excellent | High | Coastal, offshore, industrial |
Galvanized steel offers best cost-to-strength ratio for most structural projects.
7. Can you manufacture C channels from different steel grades such as A36, A572, Q235, Q355?
Yes. Available grades:
A36 / S235 / Q235 (general construction)
A572 Gr.50 / Q355 (high-strength structures)
S450GD / G450 (GI coil-formed structural members)
Mechanical properties are fully traceable with heat number tracking.
8. What are your standard and maximum production lengths? Will longer channels affect straightness?
Standard lengths: 6 m, 9 m, 12 m
Maximum length: 15 m (HDG)
Straightness tolerance: ≤2 mm per meter
Longer members are produced using controlled rolling & straightening machines to maintain alignment.
9. How are the galvanized C channels packaged to prevent corrosion or deformation during export transport?
Export packaging includes:
Steel strapped bundles
Waterproof wrapping
End-protection caps
Wooden pallets (optional)
Anti-rust oil for cut surfaces
Ensures no deformation, zinc abrasion, or moisture damage during long-distance shipping.
10. Do you support project-based supply, fixed pricing, or long-term framework agreements?
Yes. We work with EPC companies, steel distributors, and construction contractors offering:
Project-based customized production
Monthly or quarterly supply plans
Quantity-based price locking
Technical support + shop drawings
This ensures stable supply and predictable cost for long-term business.
Hot Tags: galvanized c channel sizes, China galvanized c channel sizes manufacturers, suppliers, factory
