Purlins & Secondary Steel
C & Z Purlins and Girts
Galvanized purlins cut, punched and bundled to your layout.
Cold-formed C and Z purlins and girts, eave struts and bracing in galvanized steel – supplied with the frame or as a separate order.
Purlins and girts carry the roofing and wall sheets to the main frame – and in a typhoon they hold the roof down. We roll-form them from zinc-coated high-strength coil, cut each one to length and pre-punch the holes so they bolt straight onto the cleats.
Z sections lap over the supports for continuity on long runs; C sections suit simple spans, openings and wall girts. Each bundle is tagged to the roof and wall layout drawings.
Features & components
- C sections 80–300 mm deep, Z sections 125–300 mm
- Thickness 1.2–3.0 mm
- Zinc coating Z275 (275 g/m²) as standard
- Pre-punched 14 × 22 mm slotted holes
- Sag rods, bridging and cleats included
- Available without the main frame
Frequently asked questions
Can I order purlins only?
Yes. Send the roof layout or the purlin schedule and we quote cut, punched and bundled purlins delivered CIF or DDP.
Why Z purlins on long buildings?
Z sections nest at the laps over each frame, giving continuity that reduces size and weight on multi-bay roofs.