Standard HDG C/Z Steel Purlin – General PV Mounting Grade
Product Overview
Hot-dip galvanized C/Z steel purlin is the primary structural component of ground and roof solar mounting systems. Manufactured by cold forming structural steel strip into C or Z profiles with full hot-dip galvanized corrosion protection, it delivers reliable load-bearing capacity, consistent dimensional accuracy and long outdoor service life. This standard grade is optimized for fixed-tilt utility and commercial solar arrays, providing the most economical solution for general solar mounting applications.
Why Choose CNB Solar Mounting Steel?
We manufacture solar mounting profiles on high-precision cold roll forming lines using certified structural galvanized steel. Every section undergoes strict straightness and dimensional inspection to ensure compatibility with standard solar mounting hardware. With large ready stock of standard sizes and in-house punching and cutting capabilities, we support both small distributed and large utility-scale solar projects with fast delivery and competitive pricing.
Key Specifications
| Item | Specification |
|---|---|
| Product Name | Hot-Dip Galvanized C/Z Solar Purlin |
| Steel Grade | Q235B / S250GD structural grade |
| Zinc Coating | Z80 – Z180g/m² (Z120 standard) |
| Material Thickness | 1.5mm – 3.0mm |
| Section Height | 80mm – 300mm |
| Standard Lengths | 6m / 9m / 12m, custom cut |
| Punching Option | Standard pre-punched holes for panel clamps |
| Straightness Tolerance | ≤1.5mm per meter |
| Applicable Standards | ASTM A653, EN 10346 |
| Typical Service Life | 15–20 years (inland environment) |
Core Advantages
- Cost-effective solution: The most widely specified solar mounting profile for utility-scale projects.
- Consistent quality: Tight dimensional tolerances for fast modular assembly.
- Reliable corrosion protection: Full hot-dip galvanizing for long outdoor service.
- Project-ready: Pre-punched and cut-to-length options reduce on-site labor.
- Flexible design: Both C and Z profiles available for different load and span requirements.
Applications
This standard galvanized C/Z purlin is widely used for ground-mounted solar arrays, rooftop solar mounting systems, fixed-tilt PV racks, solar carports and general photovoltaic support structures.
Get a Quotation
We supply a full range of solar mounting steel profiles, accessories and complete mounting systems. Project-specific load calculations and custom fabrication options are available upon request. Contact our solar steel team for a competitive project quotation.
