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ASTM A36 2.5mm Thickness HDG C Channel
Product Overview
Royal Steel Group's ASTM A36 2.5mm thick hot-dip galvanized C-channel, manufactured with over 10 years of experience, is an ideal choice for cold-rolled C-channel steel in solar panel frames. Made from ASTM A36 carbon steel, this C-channel steel provides reliable mechanical strength and excellent corrosion resistance in a variety of harsh indoor and outdoor environments.
The 2.5mm wall thickness achieves a good balance between strength, weight, processability, and installation efficiency. We can provide customized channel steel dimensions, lengths, and punched channel shapes to meet your project requirements.
Product Detail
| Item | Specification |
| Product | HDG C Channel |
| Steel Grade | ASTM A36,A572 |
| Thickness | 1.0,1.2,1.5,2.0,2.5 |
| Surface | Hot-Dip Galvanized |
| Profile | C Channel / Slotted C Channel |
| Length | Standard or Customized |
| Slot Pattern | Customized |
| Application | Solar Mounting, Construction, Industrial Structures |
KEY FEATURES
1.Hot-Dip Galvanized Surface – Enhanced corrosion resistance for outdoor and humid environments.
2.Slotted Options – Pre-punched slots allow quick and adjustable bolted connections.
3.Custom Dimensions – Width, height, length, thickness, and slot patterns can be customized.
4.Easy Fabrication – Suitable for cutting, drilling, welding, and assembly.
5.Export Ready – Professional bundling and packaging for container and bulk shipment.
Hot-Dip Galvanized Steel C Channel Chemical Composition & Mechanical Properties
ASTM A36 Chemical Composition
| Standard | C | Mn | P | S | Si | Cu |
| ASTM A36 | ≤0.26% | — | ≤0.040% | ≤0.050% | ≤0.40% | ≥0.20%* |
Note:
* The manganese content of ASTM A36 varies depending on the product type, thickness, and manufacturing specifications; not all A36 products have a uniform maximum value.
** Copper content requirements generally apply to specified weathering/copper steel conditions; specific requirements should be based on purchasing standards and MTC.
ASTM A36 Mechanical Properties
| Standard | Yield Strength | Tensile Strength | Elongation | Elastic Modulus | Poisson's Ratio |
| ASTM A36 | ≥250 MPa (36 ksi) | 400–550 MPa (58–80 ksi) | ≥20% | ≈200 GPa | ≈0.26–0.30 |
Note: The specific chemical composition limits for A36 vary depending on the product form (plate, section, bar, etc.) and the applicable ASTM clauses. It is recommended to determine the final table according to the specific product standard and MTC to avoid directly applying the A36 composition of plate to formed channel steel.
Hot-Dip Galvanized Steel C Channel Size
| No. | Size | Thickness | Type | Surface Treatment | ||
| mm | inch | mm | Gauge | |||
| A | 41x21 | 1-5/8x13/16" | 1.0,1.2,1.5,2.0,2.5 | 20,19,17,14,13 | Slotted, Solid | GI,HDG,PC |
| B | 41x25 | 1-5/8x1" | 1.0,1.2,1.5,2.0,2.5 | 20,19,17,14,13 | Slotted, Solid | GI,HDG,PC |
| C | 41x41 | 1-5/8x1-5/8" | 1.0,1.2,1.5,2.0,2.5 | 20,19,17,14,13 | Slotted, Solid | GI,HDG,PC |
| D | 41x62 | 1-5/8x2-7/16" | 1.0,1.2,1.5,2.0,2.5 | 20,19,17,14,13 | Slotted, Solid | GI,HDG,PC |
| E | 41x82 | 1-5/8x3-1/4" | 1.0,1.2,1.5,2.0,2.5 | 20,19,17,14,13 | Slotted, Solid | GI,HDG,PC |
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Hot-Dip Galvanized Steel C Channel Manufacturing Process
The manufacturing process of hot-dip galvanized steel C channel combines precision steel forming with zinc coating technology to provide structural strength and corrosion resistance for construction, solar mounting, and industrial applications.
1. Raw Material Preparation
Steel coils, commonly carbon structural steel such as ASTM A36, are inspected for thickness, width, chemical composition, and surface condition before production.
2. Slitting
The steel coil is slit into the required strip width according to the final C channel dimensions.
3. Roll Forming
The steel strip passes through a series of precision forming rollers to create the C-shaped profile. Channel height, flange width, lip size, and thickness are controlled during this process.
4. Punching & Cutting
For slotted C channel, holes or elongated slots are punched according to the required spacing and pattern. The formed channel is then cut to the specified length.
5. Hot-Dip Galvanizing
The steel C channel is cleaned, pickled, and fluxed before being immersed in molten zinc. The zinc coating forms a protective layer on the steel surface, improving corrosion resistance.
6. Inspection & Quality Control
Finished galvanized C channels are checked for dimensions, straightness, slot accuracy, surface condition, and zinc coating requirements. MTC and third-party inspection can be provided when required.
7. Packaging & Delivery
The finished C channels are bundled with steel straps and prepared for container or bulk shipment.
Application
Hot-Dip Galvanized Steel C Channel is very popular in the machinery, hardware, automobile, decoration and other industries due to its good performance in strength, easy installation and corrosion resistance.
Solar Mounting Systems – PV rails, support frames, brackets, solar panel mounting structures.
Building Framing – For wall studs, joist hangers, ceiling joists and light-duty truss applications.
Process Industry – For equipment supports, machinery frames, cable trays and pipe supports.
Warehouses – Applied to store racks, support structures, platforms and provisional framing.
Infrastructure Projects – For walk rails, service platforms, guard rail supports and is also used for other steel parts.
Electrical and Cable Systems – Serve as cable, conduit and electrical equipment support channels.
Custom Fabrication
Royal Steel Group can provide customized processing according to customer drawings.
Available services include:
1.Custom length cutting
2.Slot punching
3.Hole punching
4.Drilling
5.Welding
6.Surface treatment
7.Customized packaging
Standard lengths such as 6 m and 12 m are available, while customized lengths can be produced according to project requirements.
Why Choose Royal Steel Group
Royal Steel Group supplies hot-dip galvanized steel C channels for solar mounting, construction, and industrial projects, with flexible specifications and professional export services.
1.Precise Manufacturing: Controlled roll forming, punching, cutting, and galvanizing processes.
2.Quality Documentation: MTC and third-party inspection services available.
3.Bulk Supply: Suitable for wholesale orders, solar projects, and large construction applications.
4.Global Export Service: Professional packaging, logistics coordination, and international delivery.
5.Project Support: Technical and sales teams provide specification confirmation and customized solutions.
Packaging & Shipping
C channels are tied together with steel straps and protection is in place as per transportation requirement. Custom length and packing can be provided for container or bulk shipment.
In delivery, we support FOB, CFR, CIF and etc. international trade terms as your requirement.
FAQ
Q1: Is the strut channel available with slots?
A: Yes. Both slotted and plain versions are available. Slotted channels provide greater flexibility for positioning and adjustment during installation.
Q2: What thicknesses are available?
A: Common thicknesses include 1.5 mm, 2.0 mm and 2.5 mm, with other thicknesses available depending on the product and project requirements.
Q3: What lengths are available?
A: Common lengths include 6 m and 12 m, while custom-cut lengths can be supplied according to requirements.
Q4: Can you provide hot-dip galvanized strut channel?
A: Yes. Royal Steel Group supplies HDG, pre-galvanized and other surface-treated strut channels for different environments and applications.
Q5: Can I order custom strut channel?
A: Yes. Customers can specify size, thickness, slot pattern, material, surface treatment, length, quantity and packaging requirements for a customized quotation.
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