Stainless steel channels are essential structural components widely used across industries such as construction, manufacturing, shipbuilding, and chemical processing. Among these, steel C channels stand out for their strength, corrosion resistance, and versatility. This article focuses on steel c channel dimensions, providing an in-depth overview of stainless steel channel manufacturing in China, typical sizes, grades, surface finishes, and applications. We also include a detailed size chart to assist B2B buyers, engineers, and fabricators in selecting the right stainless steel C channel for their projects.
1. Introduction to Stainless Steel C Channels
Stainless steel C channels are steel profiles with a characteristic “C” shaped cross-section. They consist of a vertical web and two horizontal flanges, providing excellent structural support and load-bearing capacity. Their corrosion resistance and high strength make them ideal for harsh environments, including chemical plants, marine applications, and food processing facilities.
Chinese manufacturers have become global leaders in producing stainless steel channels due to advanced production capabilities, competitive pricing, and adherence to international standards.


2. Common Stainless Steel Grades for C Channels
The most widely used stainless steel grades for C channels include:
- 304 / 304L: The most common grade, offering good corrosion resistance and strength. Suitable for general-purpose applications.
- 316 / 316L: Contains molybdenum, providing enhanced resistance to chlorides and marine environments. Ideal for chemical and food processing.
- 310S: High-temperature resistance, used in furnace parts and heat exchangers.
- 2205 Duplex: Combines high strength with excellent corrosion resistance, used in petrochemical and offshore industries.
Each grade has specific mechanical properties and chemical compositions that influence its suitability for different applications.
3. Manufacturing Processes
Chinese stainless steel channel manufacturers employ several production methods:
- Hot Rolling: Produces channels with good mechanical properties and surface finish, suitable for standard sizes.
- Laser Fusion: Used for thicker channels or custom dimensions, offering precise control over shape and size.
- Cold Rolling: Provides channels with tighter tolerances and smoother surfaces, often used for thinner profiles.
Manufacturers can customize lengths, thicknesses, and surface finishes based on client requirements.
4. Steel C Channel Dimensions: Standard Sizes and Specifications
The dimensions of stainless steel C channels vary widely, but typical size ranges include:
- Height (H): 40 mm to 380 mm
- Width (B): 25 mm to 100 mm
- Thickness (t): 3 mm to 20 mm
- Length: Standard 6 meters or customized lengths up to 20 meters


Table 1: Typical Stainless Steel C Channel Dimensions and Weights
| Model | Height (mm) | Width (mm) | Thickness (mm) | Radius (mm) | Weight (kg/m) | Manufacturing Process |
|---|---|---|---|---|---|---|
| C 50x25x5 | 50 | 25 | 5 | 6 | 3.95 | Hot Rolled |
| C 75x40x5 | 75 | 40 | 5 | 8 | 6.95 | Hot Rolled/Laser |
| C 100x50x5 | 100 | 50 | 5 | 8 | 9.37 | Hot Rolled/Laser |
| C 125x65x6 | 125 | 65 | 6 | 8 | 13.4 | Hot Rolled/Laser |
| C 150x75x6.5 | 150 | 75 | 6.5 | 10 | 18.62 | Hot Rolled/Laser |
| C 200x80x7.5 | 200 | 80 | 7.5 | 10 | 24.77 | Hot Rolled/Laser |
| C 250x90x9 | 250 | 90 | 9 | 12 | 34.86 | Hot Rolled/Laser |
| C 300x90x10 | 300 | 90 | 10 | 12 | 43.85 | Hot Rolled/Laser |
| C 380x100x13 | 380 | 100 | 13 | 16 | 62.5 | Hot Rolled/Laser |
5. Surface Finishes Available
Chinese manufacturers offer a variety of surface finishes tailored to application needs:
- Mill Finish: Standard finish after rolling, dull and grainy.
- Pickled: Acid-treated for improved corrosion resistance.
- Hairline Finish: Fine linear texture for aesthetic appeal.
- Mirror (8K) Finish: Highly polished reflective surface used in decorative and sanitary applications.
- Sand Blast: Matte finish for industrial use.
6. Applications of Stainless Steel C Channels
- Construction: Structural framing, supports, and reinforcements.
- Chemical Industry: Corrosion-resistant structures and equipment.
- Food Processing: Hygienic frames and supports.
- Marine: Boat building and offshore platforms.
- Automotive: Chassis and body components.
- Electrical: Cable trays and supports.
7. Quality Standards and Certifications
Chinese stainless steel channel manufacturers comply with international standards such as:
- ASTM A276, ASTM A479, ASME SA276, SA479
- JIS G4305 (Japan)
- EN 10088 (Europe)
- GB/T 1220 (China)
These standards ensure material quality, mechanical properties, and dimensional accuracy.
8. Advantages of Choosing Chinese Stainless Steel Channels
- Competitive Pricing: Cost-effective manufacturing with high quality.
- Customization: Flexible sizes, grades, and finishes.
- Large Production Capacity: Ability to supply bulk orders with consistent quality.
- Advanced Technology: Use of laser fusion and precision roll forming.
- Global Export Experience: Compliance with international shipping and packaging standards.
9. How to Select the Right Steel C Channel Dimensions
Selecting the right steel C channel involves considering:
- Load requirements: Heavier loads require thicker and larger channels.
- Environmental conditions: Corrosive environments may require higher-grade stainless steel.
- Fabrication needs: Consider ease of welding, cutting, and drilling.
- Project specifications: Length, finish, and tolerance requirements.


10. Summary Table: Stainless Steel C Channel Sizes and Properties
| Size (HxWxT mm) | Weight (kg/m) | Yield Strength (MPa) | Tensile Strength (MPa) | Common Grades | Typical Applications |
|---|---|---|---|---|---|
| 50x25x5 | 3.95 | 205 | 515 | 304, 316 | Light structural framing |
| 75x40x5 | 6.95 | 205 | 515 | 304, 316 | Medium load supports |
| 100x50x7.5 | 9.37 | 205 | 515 | 304, 316 | Heavy-duty structural frames |
| 150x75x10 | 18.62 | 205 | 515 | 316, 2205 | Marine and chemical plants |
| 250x90x13 | 34.86 | 205 | 515 | 316, 2205 | Industrial machinery support |
11. Conclusion
China’s stainless steel channel manufacturers offer a wide range of high-quality steel C channels with diverse dimensions, grades, and finishes to meet global market demands. Understanding steel c channel dimensions and their applications is vital for B2B buyers to select the appropriate product for their projects, ensuring structural integrity, corrosion resistance, and cost efficiency.
For tailored solutions, competitive pricing, and reliable supply, partnering with experienced Chinese manufacturers like those listed on Navstar Steel and Tuolian Metal is recommended.