Download the Latest C CHANNLE Specifications and Dimensions.
Canadian Standard CSA G40.20/G40.21 Structural Steel U Channel | 44W 50W 50WT 65W 65WT
Royal Steel Group specializes in supplying CSA G40.20/G40.21 standard U-shaped channel steel, serving construction clients across Canada and the broader North America region.
All our structural U channels are fabricated in full compliance with the specifications laid out in CSA G40.20 and G40.21 structural steel standards. Boasting outstanding structural rigidity, smooth welding performance, precise dimensional tolerances and stable long-term usability, these channels fit a wide range of structural engineering uses.
We stock mainstream material grades: 44W, 50W, 50WT, 65W and 65WT. They are widely adopted in steel frame workshops, industrial facilities, bridge works, mechanical equipment brackets and municipal infrastructure builds.
For reference, CSA G40.20/G40.21 is the core specification governing structural-grade steel items—covering section profiles, channel bars, hollow structural tubes and solid bars—designed for general construction and civil engineering projects.
| Item | Specification |
| Product Name | CSA U Channel / Structural Channel Steel |
| Standard | CSA G40.20/G40.21 |
| Common Grades | 44W, 50W, 50WT, 65W, 65WT |
| Section Type | U Channel / C Channel / Structural Channel |
| Manufacturing Process | Hot Rolled |
| Material Type | Weldable Structural Steel |
| Length | 6 m, 12 m, Customized |
| Surface Treatment | Black, Painted, Galvanized, Shot Blasted |
| Tolerance Standard | CSA / ASTM Dimensional Requirements |
| Inspection | Mill Test Certificate (MTC), SGS/BV Third-Party Inspection Available |
| Processing Service | Cutting, Drilling, Welding, Fabrication |
| Grade | Strength Level | Features | Applications |
| 44W | 300 MPa (44 ksi) | General weldable structural steel | Buildings, supports, platforms |
| 50W | 345 MPa (50 ksi) | Higher strength structural steel | Industrial structures, frames |
| 50WT | 345 MPa (50 ksi) | Improved notch toughness | Bridges, cold climate projects |
| 65W | 450 MPa (65 ksi) | High strength steel | Heavy structures, infrastructure |
| 65WT | 450 MPa (65 ksi) | High strength with toughness | Heavy engineering applications |
| Channel Size | Depth (H) | Width (B) | Thickness (t) | Typical Weight |
| C3 × 4.1 | 76 mm | 35 mm | 4.3 mm | 6.1 kg/m |
| C4 × 5.4 | 102 mm | 40 mm | 4.7 mm | 8.0 kg/m |
| C5 × 6.7 | 127 mm | 43 mm | 4.8 mm | 10.0 kg/m |
| C6 × 8.2 | 152 mm | 48 mm | 5.1 mm | 12.2 kg/m |
| C8 × 11.5 | 203 mm | 57 mm | 5.6 mm | 17.1 kg/m |
| C10 × 15.3 | 254 mm | 65 mm | 6.1 mm | 22.8 kg/m |
| C12 × 20.7 | 305 mm | 74 mm | 7.2 mm | 30.8 kg/m |
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Superior Load Bearing Performance
Thanks to its unique U-form cross-section, this channel delivers solid anti-bending and anti-compression properties, perfectly suited for all kinds of load-bearing structural frameworks.
Optimized Welding Characteristics
Our CSA W & WT series steel grades are engineered specifically for welded construction work, guaranteeing stable, trouble-free fabrication during processing.
Adapted to Canada’s Harsh Weather Conditions
WT variant steel features upgraded impact resistance, which meets the low-temperature toughness demands of outdoor Canadian construction projects.
Processing & Fabrication Services
| Service | Details |
| Cutting | Custom length cutting via saw, plasma and CNC per your drawings |
| Drilling & Punching | Bolt hole processing for structural steel construction |
| Welding Fabrication | Custom assembly & welding of structural steel parts |
| Surface Finishing | Shot blast, paint and hot-dip galvanized anti-rust treatments |
| CNC Machining | High-precision machining for special custom steel pieces |
| Structural Fabrication | Custom beams, channels, columns and supports from project drawings |
| Custom Length & Marking | Custom sizes, logo marking and personalized packaging |
Quality Control & Documents
Royal Steel Group supplies complete supporting inspection documents for all CSA U channel orders to meet North American construction standards:
Full certification complying with CSA G40.20 and G40.21 standards, official mill test certificates, chemical composition test records, mechanical performance inspection papers, and dimensional measurement reports.
We also support third-party factory audits from SGS or BV upon client request.
| Surface Finish | Brief Explanation | Main Applications |
| Original Mill Black Surface | As-produced hot rolled steel with natural oxide layer, low cost for standard structures | General steel frames, warehouse construction |
| Shot Blasting | Clear away rust and scale to prepare steel for follow-up coating | Pre-paint treatment, structural component processing |
| Custom Paint Coating | Primer & protective paint for anti-rust needs, customizable colors | Outdoor industrial buildings |
| Hot-Dip Galvanized (HDG) | Zinc immersion coating for long-term rust prevention outdoors | Bridges, coastal and open-air infrastructure |
| Epoxy Coating | Superior resistance against moisture and chemical corrosion | Factories, pipelines, harsh industrial sites |
| Powder Coating | Wear-resistant decorative coating with stable color performance | Commercial & architectural steel projects |
Royal Steel Group is a leading U-channel steel manufacturer in China and a global producer of high-strength structural steel for the construction and engineering sectors. As a professional producer of steel channels and U-channel steel, we are committed to providing our global customers with consistently high-quality products, highly competitive prices, and fast delivery.
With advanced processing equipment and a rigorous quality control management system, we guarantee that every steel channel steel conforming to ASTM A572 standards meets international quality standards in terms of strength, dimensions, and performance. Our factory integrates production, processing, and export, providing you with the most comprehensive one-stop service for steel structures.
We offer flexible customization services, including cutting, drilling, welding, and surface treatment, to meet the needs of various projects, including buildings, bridges, and industrial structures. With over ten years of international trade experience, Royal Steel Group has established a trusted business partner image in the United States, South America, Southeast Asia, the Middle East, and Africa.
Choosing us means choosing a reliable Chinese steel channel steel manufacturer with strong supply capabilities, fast delivery, and professional technical support!
CSA standard U channels have extensive application scenarios across North American construction sectors:
Prefabricated steel frame buildings
Storage warehouses and manufacturing workshops
Structural auxiliary parts for bridge engineering
Heavy-duty industrial operating platforms
Load-bearing brackets for mechanical equipment
Railway infrastructure and transit construction projects
Mining sites and new energy & power facilities
Standard export bundled packaging, fastened with steel strapping
Waterproof wrapping for rust prevention
Flexible shipment: containerized or bulk transport
Custom marking service on bundles upon request
Q1: Which standard applies to your U channels?
A: All our U channels follow CSA G40.20/G40.21 Canadian structural steel specs. We stock mainstream grades: 44W, 50W, 50WT, 65W, 65WT.
Q2: What CSA steel grades do you offer?
A:
44W: Regular structural grade with reliable weld performance
50W: Higher tensile strength for load-bearing frames
50WT: Extra low-temperature impact toughness for cold Canadian regions
65W / 65WT: High-strength options for heavy-load construction
Q3: What sizes of CSA U channels are in stock?
A: Standard sizes we regularly supply:
C3×4.1, C4×5.4, C5×6.7, C6×8.2, C8×11.5
We also tailor thickness, length and overall dimensions to match your project drawings.
Q4: What surface treatments can I choose?
A: Multiple finishing options to fit different construction environments:
Raw hot-rolled black finish, shot blasting, paint coating, hot-dip galvanizing and epoxy anti-corrosion coating.
Q5: Do you offer custom machining & fabrication?
A: Absolutely. We provide full processing services per your drawings:
Precision cutting, drilling & punching, welding assembly, CNC machining and custom surface finishing.
Q6: How do you guarantee consistent product quality?
A: Our full QC inspection covers chemical analysis, mechanical performance tests, dimensional and surface checks. Full MTC documents are supplied with every shipment. SGS or BV third-party inspection is available on demand.
Q7: What export paperwork will you provide?
A: Complete export documents include mill test certificates, chemical & mechanical test reports, packing list and commercial invoice. Third-party inspection certificates can be added as required.
Q8: Where are CSA G40.21 Channel commonly applied?
A: They serve a broad range of North American construction works:
Steel frame buildings, factory warehouses, bridge components, equipment platforms, mining & energy facilities, structural support frames.
Q9: Are custom U channel orders acceptable?
A: Yes. We fully customize steel grade, section size, wall thickness, length, surface finish and fabrication details. Project-specific OEM orders are warmly welcomed.
Q10: What details do I need to submit for an accurate quote?
A: Kindly share the below information:
Channel size, steel grade, order quantity, required length, surface finish and destination port. We’ll craft a matching steel solution and send you a competitive offer promptly.
ROYAL GROUP
Address
Kangsheng development industry zone,
Wuqing district, Tianjin city, China.
Phone
Hours
Monday-Sunday: 24-hour Service
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