Profile Section
Z240×73×16×2.5 mm Steel Z Profile — S420GD+Z275
The 240x73x2.5mm steel Z profile is a cold roll-formed lipped purlin: 240 mm web, 73 mm flanges with 16 mm edge lips and 2.5 mm thickness, 7.81 kg/m. Roll-formed to order in galvanized S420GD+Z275 steel; Z purlins can be lapped at supports to form continuous roof and wall purlin lines. This page shows the size in pre-galvanized strip S420GD+Z275: Z275 zinc coating (275 g/m² in total on both sides), minimum yield 420 MPa.
Made to Order — Roll Formed
This profile is roll-formed to order in your length (1–25 m). The minimum order is 5000 kg per size and material. Add your sizes to a quote request and we confirm lead time and price.
Add to Quote Request
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Minimum order: 54 pieces
Minimum order: 5,000 kg per size
Optional made-to-order requirements — added to this line for our production team.
Applications & Usage
Z 240x73x2.5 carries roof and wall cladding on industrial halls, warehouses and agricultural buildings; lapped and bolted at supports it forms continuous purlin lines. Holes can be punched to your purlin schedule. Pre-galvanized strip is the usual choice for outdoor purlins, rails and solar mounting structures. Each size is roll-formed to order in lengths from 1 to 25 m. The minimum order is 5000 kg per size and material — add your sizes to a quote request and we confirm lead time and delivered price.
Technical Specifications
| Specification | Value |
|---|---|
| Dimensions | 240mm × 73mm × 2.5mm |
| Weight per Meter | 7.81 kg/m |
| Material | Steel |
| Alloy/Grade | S420GD+Z275 |
| Standard | EN 1090-1 (CE, EXC2); coated strip to EN 10346 |
| Profile Type | Z (purlin) |
| Edge Lip (c) | 16 mm |
| Developed Width | 400 mm |
| Cross-Section Area | 9.96 cm² |
| Moment of Inertia Iₓ | 841.9 cm⁴ |
| Section Modulus Wₑₗ,ₓ | 70.16 cm³ |
| Radius of Gyration rₓ | 9.17 cm |
| Moment of Inertia Iᵧ | 90.5 cm⁴ |
| Section Modulus Wₑₗ,ᵧ | 12.61 cm³ |
| Radius of Gyration rᵧ | 3.01 cm |
| Available Lengths | 6m, 12m |
| Standard Length | 6 m |
| Minimum Order per Size | 5 t |
| Cut-to-Length Range | 1000 – 25000 mm |
Weight and section properties are nominal values from the mill catalogue table. Values marked ≈ are calculated from the section centerline.
Indicative load span (single span, simply supported)
Allowable uniformly-distributed load (kN/m) limited by elastic bending about the strong axis (γ = 1.5 on yield, S420GD+Z275). Deflection is not checked and usually governs long spans. Indicative only — confirm with a project calculation.
| Span | Max UDL |
|---|---|
| 2 m | ≈ 39.29 kN/m |
| 3 m | ≈ 17.46 kN/m |
| 4 m | ≈ 9.82 kN/m |
| 5 m | ≈ 6.29 kN/m |
| 6 m | ≈ 4.37 kN/m |
Made to Order — Roll Formed
This profile is roll-formed to order in your length (1–25 m). The minimum order is 5000 kg per size and material. Add your sizes to a quote request and we confirm lead time and price.
Cut to exact length
Any length from 1 to 25 m — no offcut waste on site
Material options
Pre-galvanized steel strip S420GD+Z275 to EN 10346; the zinc coating is on the coil before roll forming.
In-line punching
Holes and slots punched to your drawing
Certified production
EN 1090-1 factory production control (CE, up to EXC2); ISO 9001
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