What Are Angle Steel, Channel Steel, H-Beams, and I-Beams?

Understanding Common Structural Steels in Solar Mounting Systems

Various types of structural steel are used in engineering, each optimized for specific applications. In the solar energy sector, angle steel, channel steel, H-beams, and I-beams are essential in forming robust and efficient mounting structures. This article breaks down their features and practical uses, especially in solar projects.

🔩 Angle Steel (L-Angle)

Features

Angle steel has an L-shaped cross-section and is categorized into equal and unequal types. It’s widely used for light reinforcement and joint brackets in PV racking.

• Strong in axial and bending directions
• Lightweight and easy to handle
• Good weldability and machinability

Applications

• Corner connectors in roof and ground mount systems
• Reinforcement for small framing in balcony or RV solar brackets

📷 Image: Hot-dip galvanized angle steel

🧱 Channel Steel (C-Channel)

Features

Channel steel features a C-shaped profile that gives high strength against lateral bending.

• High rigidity with low weight
• Excellent for horizontal load-bearing
• Easily cut and welded

Applications

• Long-span purlins in ground-mounted structures
• Frames for solar carports or balcony racks

📷 Image: C-channel steel stock

🏗️ H-Beam

Features

H-beams are known for their wide flanges and thick web, delivering superior strength in both axial and bending loads.

• High section modulus
• Excellent for large-scale or heavy-load installations
• Versatile and stable under dynamic loads (e.g., snow, wind)

Applications

• Columns in steel carport systems
• Bridges and structural foundations
• Cranes and rail-mounted solar systems

📷 Image: Industrial-grade H-beam

🧱 I-Beam

Features

I-beams have a slender “I” shape optimized for bending resistance while minimizing weight.

• High strength-to-weight ratio
• Preferred in rooftop and carport designs
• Efficient material usage

Applications

• Beam elements in roof solar mounting systems
• Structural ribs in waterproof solar shelters
• Cost-efficient ground mount frames

📷 Image: Structural I-beam for PV racking

🔧 Summary Table

🔗 Related Systems Using These Steel Types

• 지상 태양광 설치 시스템
• C – Steel Ground Mount – Concrete Foundation
• Ramming Pile Ground Mounting System
• Steel Double Solar Panel Carport