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The 300x90x4mm steel Sigma Plus profile is a cold roll-formed Σ+ section to EN 10162 with a deep stiffened 300 mm web, 90 mm flanges, fixed 25+15 mm double lips and 4 mm sheet thickness, weighing a nominal 18.47 kg/m. Produced to order in uncoated S355JR steel, the Sigma+ indent and double lips raise buckling resistance for heavy purlins, columns and long-span structures.
Sigma+ 300x90x4 is the weight-optimized choice for heavy purlins, columns and long-span rafters where a standard Sigma or C is not enough. The deep web indent and double lips allow thinner material for the same performance, cutting steel cost and foundation loads on industrial and agricultural buildings. At a nominal 18.47 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 500 kg per size and coating — add your sizes to a quote request and our team confirms exact tonnage, lead time and delivered pricing.
| Specification | Value |
|---|---|
| Dimensions | 300mm × 90mm × 4mm |
| Weight per Meter | 18.473 kg/m |
| Material | Steel |
| Alloy/Grade | S355JR |
| Standard | EN 10162 / EN 10346 |
| Profile Type | Sigma Plus (Σ+) |
| Edge Lip (c) | 25+15 mm |
| Developed Width | ≈ 588 mm |
| Minimum Production Run | ≈ 500 kg |
| Finish | S355JR Uncoated |
| Available Lengths | 6m, 12m |
| Standard Length | 6 m |
| Minimum Order Length | 30 m |
| Cut-to-Length Range | 1000 – 15000 mm |
This profile is roll-formed to order in your exact length (1–15 m; longer on project basis). Minimum production run is approx. 500 kg per size and coating. Add your sizes to a quote request and our team confirms lead time and pricing within one business day.
This profile is roll-formed to order in your exact length (1–15 m; longer on project basis). Minimum production run is approx. 500 kg per size and coating. Add your sizes to a quote request and our team confirms lead time and pricing within one business day.
Request a quote for current pricing.
Select length and quantity to add to your quote cart
Minimum order: 3 pieces
Minimum total length: 30 m
Any length from 1 to 15 m — no offcut waste on site
Pre-galvanized (DX51D+Z / S350GD+Z), uncoated cold-rolled, Aluzinc and pre-painted RAL on request
Mounting holes and slots punched to your drawing during roll forming
Produced to EN 10162; EN 10204 3.1 mill certificates available
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