Free CE Approved Jchx SUS304 Tile Roof Solar Panel Hook Adjustable PV Mounting Bracket

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 like weight, wind pressure, snow load to main beams), and Structure Formation (connecting with main beams and columns to form a complete support structure system).

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

Professional calculation is required, primarily considering these factors: Mechanical Loads (calculate bending moment and shear force based on local wind load, snow load, and module weight), Support Span (larger spans require C-Purlins with greater specifications), Corrosive Environment (determines required galvanizing thickness or material upgrade), and Cost Budget (select the most economical and reasonable specification that meets safety requirements).

Use Dedicated Accessories (must use T-bolts or channel nuts compatible with the C-Purlin slot to prevent slipping), Torque Control (tighten bolts strictly according to the design's required torque value, avoiding over-tightening or under-tightening), Slot Alignment (ensure slots are aligned to guarantee smooth accessory movement and even load distribution), and Avoid On-Site Cutting (if cutting is necessary, the cut must be treated strictly with zinc-rich anti-corrosion paint).