Profile Section
120x60x1.5mm DX51D+Z Galvanized Steel Sigma Profile
The 120x60x1.5mm steel Sigma profile is a cold roll-formed section to EN 10162 with a stiffened, indented 120 mm web, 60 mm flanges with 20 mm edge lips and 1.5 mm sheet thickness, weighing a nominal 3.47 kg/m. Produced to order in galvanized DX51D+Z steel, the Σ geometry moves the shear centre towards the section centroid — higher load capacity and less twist than an equivalent C profile at the same weight. This variant is pre-galvanized forming-grade strip DX51D+Z275 to EN 10346. It is specified for formability and a zinc coating, not for a stated structural yield — use S350GD+Z when the profile is load-bearing.
Made to Order — Roll Formed
This profile is roll-formed to order in your exact length (1–15 m; longer on project basis). Minimum production run is approx. 3000 kg per size and grade. Add your sizes to a quote request and our team confirms lead time and pricing within one business day.
Add to Quote Request
Select length and quantity to add to your quote cart
Minimum order: 72 pieces
Minimum total length: 864 m
Optional made-to-order requirements — added to this line for our production team.
Applications & Usage
Sigma 120x60x1.5 is the weight-optimized choice for solar tracker and fixed-tilt rafters, long-span purlins, racking and shelving uprights, and light steel structures where every kilogram of steel and foundation load counts. The indented web raises buckling resistance, allowing thinner material for the same performance. DX51D+Z275 suits non-structural tracks, edge channels, hat sections and light fabrication where the section must form easily and arrive already galvanized. At a nominal 3.47 kg/m and cut-to-length production from 1 to 15 m, material usage is optimized with no offcuts on site. Minimum production run is approximately 3000 kg per size and grade — add your sizes to a quote request and our team confirms exact tonnage, lead time and delivered pricing.
Technical Specifications
| Specification | Value |
|---|---|
| Dimensions | 120mm × 60mm × 1.5mm |
| Weight per Meter | 3.473 kg/m |
| Material | Steel |
| Alloy/Grade | DX51D+Z275 |
| Standard | EN 10162 / EN 10346 |
| Profile Type | Sigma (Σ) |
| Edge Lip (c) | 20 mm |
| Developed Width | ≈ 295 mm |
| Cross-Section Area | ≈ 4.42 cm² |
| Moment of Inertia Iₓ | ≈ 102.0 cm⁴ |
| Moment of Inertia Iᵧ | ≈ 22.3 cm⁴ |
| Section Modulus Wₑₗ,ₓ | ≈ 16.79 cm³ |
| Section Modulus Wₑₗ,ᵧ | ≈ 5.81 cm³ |
| Minimum Production Run | 3 t |
| Finish | DX51D+Z Galvanized |
| Available Lengths | 6m, 12m |
| Standard Length | 6 m |
| Minimum Order Length | 864 m |
| Cut-to-Length Range | 1000 – 15000 mm |
Indicative elastic section properties computed from the nominal centerline (thin-walled, corner radii ignored). For preliminary sizing only — not a substitute for a stamped structural calculation.
Load guidance is provided for structural grades (S235JR, S355JR, S350GD+Z). DX51D+Z275 is a forming grade with no defined structural yield.
Made to Order — Roll Formed
This profile is roll-formed to order in your exact length (1–15 m; longer on project basis). Minimum production run is approx. 3000 kg per size and grade. Add your sizes to a quote request and our team confirms lead time and pricing within one business day.
Cut to exact length
Any length from 1 to 15 m — no offcut waste on site
Material options
Pre-galvanized DX51D+Z275 forming-grade strip to EN 10346. For load-bearing purlins, specify S350GD+Z275 instead.
In-line punching
Mounting holes and slots punched to your drawing during roll forming
Certified quality
Produced to EN 10162; EN 10204 3.1 mill certificates available
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