Product Specification

Oem Twin Inner Flange Cold Formed C Purlin For Warehouse Wall Keel & Agricultural Greenhouse

Product Introduction

Hot Dip Galvanized C Purlin, also known as C Channel Steel or Cold Formed C Section, is a widely used structural steel component designed for modern construction, photovoltaic mounting systems, and industrial framework applications. It is manufactured from high-quality Q235 carbon steel coil through continuous cold roll forming technology at room temperature, without traditional high-temperature hot rolling processes.

The cold formed manufacturing method enables the C purlin to achieve a precise C-shaped profile with uniform dimensions, optimized material distribution, and excellent structural efficiency. Compared with conventional hot rolled steel sections, galvanized C purlins feature a lighter self-weight, higher bending rigidity, and better material utilization, helping reduce structural load and improve construction efficiency.

The C-shaped cross-section provides excellent resistance against vertical loads and bending forces, making it suitable for roof support systems, wall framing, solar panel mounting structures, and industrial steel buildings. The open profile design also allows convenient connection with bolts, nuts, brackets, and other structural accessories.

To ensure long-term outdoor durability, all C purlins are treated with a complete hot-dip galvanizing process. The steel surface is immersed in molten zinc to form a dense protective coating with a standard thickness of 60–120μm. This zinc layer effectively protects the steel substrate from moisture, oxygen, salt spray, and chemical corrosion.

The product is especially suitable for demanding environments such as coastal regions, open-air photovoltaic power stations, chemical plants, agricultural facilities, and industrial workshops where corrosion resistance and structural stability are required.

Kejulixin provides customized C purlin solutions according to customer drawings and project specifications. Section height, flange width, material thickness, length, hole pattern, and galvanizing requirements can be adjusted to meet different engineering applications.

Product Specifications

Core Advantages

1. Lightweight Structure with High Load Performance

The cold formed C profile provides an efficient balance between weight and strength.

Advantages:

• High bending rigidity
• Stable structural performance
• Reduced steel consumption
• Lower transportation cost
• Easier installation process

The optimized cross-section helps improve construction efficiency while maintaining sufficient load-bearing capability.

2. Full Hot-Dip Galvanized Corrosion Protection

The complete galvanizing treatment creates a durable zinc barrier on the steel surface.

Performance benefits:

• Excellent rust resistance
• Strong zinc adhesion
• Protection against rain and humidity
• Suitable for outdoor applications
• Reduced maintenance requirements

The galvanized coating allows long-term service in coastal areas, solar farms, and industrial environments.

3. Precision Manufacturing for Reliable Assembly

Continuous cold forming technology ensures consistent dimensions and stable product quality.

Production advantages:

• Accurate section size
• Uniform profile shape
• Smooth surface
• Reliable batch consistency
• Easy matching with structural accessories

This improves installation accuracy and reduces adjustment work during construction.

4. Customized Hole Design for Faster Installation

Pre-punched mounting holes can be manufactured according to project drawings.

Benefits:

• Faster bolt assembly
• Reduced field processing
• Improved installation efficiency
• Suitable for prefabricated structures

This option is widely applied in solar mounting systems and steel framework projects.

Application Areas

1. Solar Photovoltaic Mounting Structures

Hot dip galvanized C purlins are widely used in:

• Ground-mounted solar brackets
• Solar panel support frames
• Photovoltaic tracking structures
• Renewable energy projects

The corrosion-resistant surface provides reliable outdoor performance for long-term solar installations.

2. Industrial Factory Steel Structures

Used as:

• Roof purlins
• Wall framing components
• Workshop support structures
• Steel building frameworks

The lightweight design helps optimize industrial building structures.

3. Agricultural Greenhouses

Suitable for:

• Greenhouse steel frames
• Agricultural facilities
• Livestock buildings
• Farm construction projects

The galvanized surface provides better resistance against humid agricultural environments.

4. Warehouse and Logistics Buildings

Applied in:

• Warehouse enclosure systems
• Roof support structures
• Storage facility frames
• Industrial partition structures

5. Outdoor Steel Platforms and Support Systems

Used for:

• Equipment support frames
• Maintenance platforms
• Steel walkways
• Outdoor structures

C Purlin Selection Guide

When selecting a suitable C purlin, customers should consider the following factors:

1. Structural Load Requirement

Different applications require different load capacities. The selection should consider:

• Roof weight
• Solar panel load
• Wind pressure
• Snow load
• Span distance

Higher load requirements usually require thicker steel or larger section dimensions.

2. Section Size Selection

Common customization parameters include:

• Section height
• Flange width
• Lip size
• Steel thickness
• Overall length

The correct profile size should match the engineering design and installation environment.

3. Surface Protection Requirement

For outdoor projects, hot-dip galvanizing is recommended due to:

• High corrosion resistance
• Long service life
• Reduced maintenance

Especially suitable for:

• Coastal areas
• Humid regions
• Industrial environments

4. Installation Method

Customers can choose:

• Standard C purlin
• Pre-punched C purlin
• Customized hole patterns

Pre-punched solutions are recommended for projects requiring faster assembly.

Quality Control & Export Service

Kejulixin follows strict quality management procedures throughout production.

Quality inspection includes:

• Raw material inspection
• Profile dimension testing
• Galvanized coating thickness testing
• Surface quality inspection
• Final product verification

The factory operates under:

• ISO9001 Quality Management System
• ISO14001 Environmental Management System
• ISO45001 Occupational Health and Safety Management System

Inspection reports and technical documents can be provided for overseas construction projects and bidding requirements.

A 1-year quality warranty is available under standard installation and normal operating conditions.

Frequently Asked Questions (FAQ)

Q1: What is a C purlin used for?

A: C purlins are mainly used as structural support components for solar mounting systems, steel buildings, warehouses, greenhouses, and industrial frameworks.

Q2: What material is used for galvanized C purlins?

A: Our C purlins are manufactured from Q235 carbon steel and processed with hot-dip galvanizing for corrosion protection.

Q3: Can C purlin dimensions be customized?

A: Yes. Section height, flange width, thickness, length, hole spacing, and other specifications can be customized according to project drawings.

Q4: What is the zinc coating thickness?

A: Standard hot-dip galvanized coating thickness is 60–120μm. Customized coating requirements are available.