A Natural Fit for 25-Year Service Life
Solar modules are designed to operate for 25–30 years outdoors, in heat, humidity and UV. Aluminium 6063-T5 combines light weight with excellent corrosion resistance — the oxide layer self-heals on exposure to air — which is why extruded aluminium frames and mounting structures have become the default across the PV industry.
PV Module Frames: Precision in Four Corners
Module frames are extruded profiles with carefully engineered grooves and drainage channels, cut and joined at 45-degree corners. Dimensional tolerance matters at the millimetre level: frame squareness and flatness directly affect glass lamination and panel assembly yield. A reliable supplier holds tight tolerances consistently across millions of metres.
Mounting and Racking Systems
For ground-mount and rooftop systems, extruded rails, clamps and brackets carry static and wind loads over the project lifetime. Compared with hot-dip galvanised steel, aluminium racking needs no re-galvanising, weighs less for transport and installation, and offers predictable corrosion performance in coastal and desert environments alike.
Sourcing Aluminium for Solar Projects
Specify the alloy (6063-T5/T6), anodizing thickness (AA10–AA15 for outdoor service), and tolerances on your drawings. For large PV programmes, work with a manufacturer that can scale — Siken Aluminum’s 30,000-ton annual capacity supplies module frames, mounting rails and brackets to solar customers worldwide, from pilot orders to container-volume deliveries.
Frequently Asked Questions
Why is aluminium the standard material for solar PV frames and racking?
Aluminium combines corrosion resistance, light weight and good strength in thin sections, which keeps installation labour and structural load low. Extrusion also allows complex profiles for module frames, rails and clamps with simple, low-cost tooling.
What surface treatment do solar mounting profiles need?
Most outdoor solar profiles use mill-finish or clear/silver anodizing for corrosion protection; powder coating is used when colour or extra durability is specified. Anodizing thickness is usually agreed to the environment of the installation site.
Can you produce custom sections for tracker and rooftop systems?
Yes. Custom dies for rails, clamps and bracket profiles are routine for us, and we can machine and anodize to your drawing. Supply your section requirements and we will quote die and piece pricing.