Hot Dip Galvanized C Purlin | Custom Pre-Punched Cold Formed Steel Channel for Solar Mounting & Steel Structures

Product Overview

Hot dip galvanized C purlin is a lightweight and high-strength cold formed steel profile widely used in solar mounting systems, industrial buildings, warehouse structures, agricultural greenhouses, and steel frame construction projects.

Manufactured from Q235 carbon steel coils through continuous cold roll forming technology, the C-shaped section provides excellent bending strength, dimensional accuracy, and material efficiency. Compared with traditional hot rolled steel sections, cold formed C purlins feature a lighter structure, optimized cross-section design, and easier installation.

The entire profile can be processed with hot-dip galvanizing treatment, creating a uniform zinc protective layer of 60–120μm. This coating effectively improves resistance against rust, moisture, salt spray, and industrial corrosion, making it suitable for outdoor and harsh environments such as coastal areas, photovoltaic power stations, and chemical facilities.

To meet different engineering requirements, we provide custom pre-punched holes, customized dimensions, and various section specifications. Hole positions, flange width, web height, thickness, and length can be adjusted according to project drawings, enabling faster bolt assembly and reducing installation time.

Product Specifications

Product Advantages

1. Lightweight Structure with High Strength

The cold formed C profile design provides an optimized strength-to-weight ratio.

Advantages:

• Reduced structural weight
• High bending resistance
• Efficient material utilization
• Easy transportation and installation

2. Hot-Dip Galvanized Corrosion Protection

The HDG surface treatment creates a durable zinc barrier.

Features:

• 60–120μm zinc coating
• Strong coating adhesion
• Resistance to moisture and salt spray
• Suitable for outdoor applications

3. Custom Pre-Punched Hole Design

Mounting holes can be produced according to engineering drawings.

Benefits:

• Faster on-site installation
• Reduced drilling work
• Accurate component positioning
• Improved construction efficiency

FAQ

Q1: What material is used for C purlins?

A: Standard C purlins are manufactured from Q235 carbon steel, providing good strength, weldability, and structural stability.

Q2: What is the advantage of cold formed C purlin?

A: Cold formed C purlins provide lightweight construction, accurate dimensions, high bending strength, and efficient material utilization compared with traditional steel sections.

Q3: Can mounting holes be customized?

A: Yes. Round or slotted holes can be pre-punched according to customer drawings and installation requirements.

Q4: Is hot-dip galvanizing suitable for outdoor solar projects?

A: Yes. The 60–120μm zinc coating provides corrosion protection for outdoor applications such as solar farms and coastal projects.

Q5: Can dimensions and thickness be customized?

A: Yes. Height, flange width, thickness, length, and hole spacing can be customized according to project specifications.