
SIGMA SECTION /purlins are accurately roll formed from high strength steel to provide an efficient, light weight and economical roofing and cladding support system for structural steel buildings. SIGMA SECTION /purlins are quick to install and suitable for both insulated and noninsulated roofs and walls.
The thickness and height of the purlin selected depend on span length and loads.

| TECHNICAL SPECIFICATION | |
|---|---|
| Section-type | Sigma sections |
| Height | ________________________ |
| Thickness | 1.5–3.0 mm Minimum length ___________ Maximum length __________ |
| Material | Hot galvanized steel sheet |
Common applications include
- Industrial construction
- Hall and warehouse construction
- Extension construction and renovation
Features
- Compact design
- Rust proof surface finish
- Robust structure
- Simple installation