A ground-mounted C-section steel photovoltaic system with Zinc-Aluminum-Magnesium (ZnAlMg) coating and pile foundation represents an advanced, high-performance solar racking solution optimized for utility-scale and large commercial solar projects. This system combines the structural efficiency of cold-formed C-section steel profiles with next-generation metallic coating technology and direct pile foundation integration, delivering exceptional durability, cost-effectiveness, and installation efficiency for challenging ground conditions.

Core Structural Component: C-Section Steel Design

• Optimized Profile Geometry: The system utilizes cold-formed C-section steel profiles (typically dimensions such as 90×45mm, 80×40×15mm, or custom specifications) engineered for maximum structural efficiency.The C-shaped cross-section provides an excellent strength-to-weight ratio, with section modulus values that resist bending and torsional forces while minimizing material usage.

• High-Strength Steel Grades: Manufactured from advanced high-strength steel grades including S350GD+ZM, S550GD+ZM, Q235B, or Q355B, achieving yield strengths up to 550MPa.This enables thinner wall sections (typically 1.5mm to 2.5mm) while maintaining structural integrity, reducing overall system weight by up to 12% compared to conventional galvanized steel

• Cold-Formed Precision: Profiles are produced through precise cold-roll forming, ensuring consistent dimensions, smooth surfaces, and excellent fit during assembly. The material exhibits exceptional formability, allowing complex shapes without compromising the coating integrity

Cut-Edge Self-Healing Property: 

A defining characteristic of ZnAlMg coating is its ability to protect exposed cut edges and scratches. The magnesium and aluminum elements form a dense, protective barrier layer that "creeps" over damaged areas, preventing rust initiation at fabrication points—a critical advantage for site-drilled holes and cut ends.

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