Profile Section
Z140×75×20×4 mm Steel Z Profile — S420
The 140x75x4mm steel Z profile is a cold roll-formed lipped purlin: 140 mm web, 75 mm flanges with 20 mm edge lips and 4 mm thickness, 9.44 kg/m. Roll-formed to order in S420 steel; Z purlins can be lapped at supports to form continuous roof and wall purlin lines. This page shows the size in black (uncoated) steel S420, minimum yield 420 MPa; other materials can be selected above.
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
Select length and quantity to add to your quote cart
Minimum order: 45 pieces
Minimum order: 5,000 kg per size
Optional made-to-order requirements — added to this line for our production team.
Applications & Usage
Z 140x75x4 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. Black steel suits indoor structures and members that are painted or hot-dip galvanized after fabrication. 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 | 140mm × 75mm × 4mm |
| Weight per Meter | 9.44 kg/m |
| Material | Steel |
| Alloy/Grade | S420 (black steel) |
| Standard | EN 1090-1 (CE, EXC2); coated strip to EN 10346 |
| Profile Type | Z (purlin) |
| Edge Lip (c) | 20 mm |
| Developed Width | 300 mm |
| Cross-Section Area | 12.03 cm² |
| Moment of Inertia Iₓ | 381.1 cm⁴ |
| Section Modulus Wₑₗ,ₓ | 54.44 cm³ |
| Radius of Gyration rₓ | 5.59 cm |
| Moment of Inertia Iᵧ | 159.4 cm⁴ |
| Section Modulus Wₑₗ,ᵧ | 21.84 cm³ |
| Radius of Gyration rᵧ | 3.61 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, S420 (black steel)). Deflection is not checked and usually governs long spans. Indicative only — confirm with a project calculation.
| Span | Max UDL |
|---|---|
| 2 m | ≈ 30.49 kN/m |
| 3 m | ≈ 13.55 kN/m |
| 4 m | ≈ 7.62 kN/m |
| 5 m | ≈ 4.88 kN/m |
| 6 m | ≈ 3.39 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
Black (uncoated) steel strip S420; paint or galvanize after fabrication where corrosion protection is needed.
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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