PV Racking Triangle Tilt Aluminum Bracket for Home Parking Lot Solar Panel

A PV Special C-Purlin is a channel steel cold-formed into a cross-section resembling the letter 'C'. It is not ordinary C-purlin but is professionally designed for the requirements of PV mounting systems, typically featuring special optimizations in product dimensions, mechanical properties, coating thickness, and pre-set holes. It serves as the core supporting component in a PV mounting system.

Its core role is to act as the 'skeleton' for PV modules. Main functions include: Support and Fixation (Directly securing PV modules via bolts or clamps), Load Transfer (Transmitting loads from modules to main beams and foundation), and Structure Formation (Acting as purlins or rails to form a complete support structure system).

Specifications are typically defined by section height and lip style. Common models include: C80/40/15 (economical for standard ground-mounted power plants and rooftops), C160/60/20 (larger moment of inertia for higher loads), and C220/80/20 (heavy-duty rail for extreme wind/snow resistance).

Professional calculation is required, primarily considering: Mechanical Loads (based on wind, snow, and module weight), Support Span (larger spans require greater specifications), Corrosive Environment (determines coating thickness or material upgrade), and Cost Budget.

Use Dedicated Accessories (T-bolts or channel nuts), Torque Control (tighten strictly according to design values), Slot Alignment (ensure slots are aligned for smooth movement), and Avoid On-Site Cutting (if necessary, treat cut with zinc-rich anti-corrosion paint).