C-purlin sizes.
Cold-formed galvanized lipped channels for roof and wall framing, sized flange × web in inches, standard 6.0m lengths, in 1.0 / 1.2 / 1.5 / 2.0mm thickness.
Sizes and weights
Cold-formed GI coil, structural quality
| Size (in) | Approx. (mm) | Thickness (mm) | kg per 6.0 m (nominal) |
|---|---|---|---|
| 2 × 3 | 50 × 75 | 1 | 6.8 |
| 2 × 3 | 50 × 75 | 1.2 | 8.1 |
| 2 × 3 | 50 × 75 | 1.5 | 10.1 |
| 2 × 3 | 50 × 75 | 2 | 13.4 |
| 2 × 4 | 50 × 100 | 1.2 | 9.4 |
| 2 × 4 | 50 × 100 | 1.5 | 11.7 |
| 2 × 4 | 50 × 100 | 2 | 15.6 |
| 2 × 5 | 50 × 125 | 1.5 | 13.3 |
| 2 × 5 | 50 × 125 | 2 | 17.7 |
| 2 × 6 | 50 × 150 | 1.5 | 14.9 |
| 2 × 6 | 50 × 150 | 2 | 19.8 |
| 2 × 8 | 50 × 200 | 2 | 24 |
Weights are nominal. Purlins are rolled from GI coil whose actual gauge often runs under the nominal, so delivered weight varies roughly ±10–15% by brand. Sizes and the 6.0m length are standard; exact weight is confirmed on your quote.
Grades
- Galvanized steel coil; thickness 1.0–2.0mm typical (0.8–2.0mm range).
How it's sold
Sold per 6.0m piece by size and thickness. Send your framing plan or purlin count and we quote it the same day. Send your list — spec sheet, drawing or BOQ — and we quote it back the same day.
Common questions
What are C-purlins used for?
Roof purlins and wall girts on steel-frame buildings — light, cold-formed and galvanized.
Are the listed weights exact?
No — nominal only. Actual coil gauge varies by brand (a “1.2mm” can run 1.0–1.1mm), so weight varies around ±10–15%. We confirm exact weight per brand on the quote.
C-purlin or channel bar for my roof?
Roof framing normally uses C-purlins. Channel bar is the heavier hot-rolled section for structural framing — see the channel bar page.
Related steel
Specs reviewed July 2026 · Southend Construction & Industrial Supplies, Dasmariñas, Cavite