C Channel Steel is a widely used structural steel section in construction, steel fabrication, and industrial projects. Its “C”-shaped cross-section provides excellent strength, load-bearing capacity, and flexibility for framing and support structures.

Choosing the right C channel steel size is essential for structural safety, cost control, and long-term durability. This guide explains standard C channel steel sizes, dimensions, applications, and selection tips to help engineers, contractors, and buyers make informed decisions.

What Are C Channel Steel Sizes?

C Channel steel sizes are defined by depth (height), flange width, web thickness, and weight per meter or foot.

In different regions, C channels follow different standards:

US Standard: C3, C4, C5, C6, C8, C10, etc.

Metric Standard: C75, C100, C150, C200, C250, C300 (mm-based)

Asian / International: Custom sizes are common for export projects

At Shineyond Group, we supply both standard and customized C Channel steel sizes for global markets, especially for Africa and the Middle East.

C Channel Steel Size Chart

Standard C Channel Steel Sizes Chart (Metric)

Below is a commonly used metric C channel steel size chart for reference:

C Channel Size

Height (mm)

Flange Width (mm)

Thickness (mm)

Weight (kg/m)

C75

75

40

4.5

5.3

C100

100

50

5.0

8.6

C125

125

65

5.3

13.4

C150

150

75

5.5

16.8

C200

200

80

6.0

22.4

C250

250

90

6.5

29.8

C300

300

100

7.0

38.1

Note: Sizes and weights may vary slightly depending on standards (ASTM, JIS, EN) or customization.

US Standard C Channel Sizes (ASTM)

In the US market, C channels are commonly designated as C x Weight:

C Channel

Depth (in)

Weight (lb/ft)

C3x4.1

3.0

4.1

C4x5.4

4.0

5.4

C5x6.7

5.0

6.7

C6x8.2

6.0

8.2

C8x11.5

8.0

11.5

C10x15.3

10.0

15.3

Common Applications of C Channel Steel

Different C channel sizes are used for different load requirements:

C Channel Size

Typical Applications

Small sizes (C75–C100)

Light steel frames, shelving, ceiling systems

Medium sizes (C125–C150)

Building frames, wall supports, equipment bases

Large sizes (C200–C300)

Bridges, platforms, steel structures, heavy-duty frames

C channel steel is widely used in:

Construction frameworks

Steel structures and warehouses

Machinery supports

Solar mounting systems

Truck and trailer frames

C Channel Steel Applications

How to Choose the Right C Channel Steel Size?

When selecting C channel steel sizes, consider the following factors:

✅ Load Requirements – Heavier loads need deeper and thicker channels

✅ Span Length – Longer spans require larger sections

✅ Installation Method – Bolted or welded connections affect size choice

✅ Environment – Galvanized C channels are recommended for outdoor use

✅ Project Budget – Optimizing size reduces material cost without sacrificing strength

Pro Tip:

For most building projects, C100 to C200 sizes offer a good balance between strength and cost.

Galvanized vs. Black C Channel Steel Sizes

Black C Channel Steel: Indoor use, fabrication, cost-effective

Galvanized C Channel Steel: Corrosion-resistant, ideal for outdoor and coastal environments

Shineyond Group provides:

Hot-rolled C channels

Galvanized C channel steel

Custom thickness and lengths

FAQs About C Channel Steel Sizes

Q1: What does “C” mean in C Channel steel?

A: It refers to the “C”-shaped cross-section with a web and two flanges.

Q2: Can I customize C channel steel sizes?

A: Yes. Length, thickness, and coating can be customized based on project needs.

Q3: What is the most commonly used C channel size?

A: C100 and C150 are among the most popular for construction projects.

Q4: Is C channel steel stronger than angle steel?

A: Yes. C channels provide better load-bearing capacity in bending applications.

Why Choose Shineyond Group for C Channel Steel?

✅ Full range of C channel steel sizes

✅ ASTM, EN, JIS standard production

✅ Stable quality for export markets

✅ Competitive prices and fast delivery

Need C Channel Steel?

Contact Shineyond Group today for a professional quotation and technical support.