Profile Section

400x100x3.5mm S235JR Uncoated Steel C Profile

The 400x100x3.5mm steel C profile is a cold roll-formed lipped channel to EN 10162 with a 400 mm web, 100 mm flanges, 30 mm stiffening edge lips and 3.5 mm sheet thickness, weighing a nominal 18.13 kg/m. Produced to order in uncoated S235JR steel, it is the standard section for solar PV mounting structures, roof purlins and side rails, and light-gauge steel framing — supplied cut to your exact length with no waste on site. This variant is uncoated cold-rolled structural strip in grade S235JR (EN 10025), minimum yield about 235 MPa. The surface is bare — specify shop painting or hot-dip galvanizing in the quote when the profile will be used outdoors.

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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.

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Quantity (pieces)

Minimum order: 14 pieces

Minimum total length: 168 m

Weight per meter:18.133 kg/m

Total length:12 meters

Total weight:217.596 kg

Production options

Optional made-to-order requirements — added to this line for our production team.

Pre-painted finish (RAL)Punching / holes to drawingMill certificate EN 10204 3.1

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Applications & Usage

C 400x100x3.5 is typically specified for solar PV piles, rails and bracing on fixed-tilt and tracker structures, roof purlins and wall side rails on industrial buildings, mezzanine joists, and light-gauge steel (LGS) wall and floor framing. Mounting holes and slots are punched in-line to your drawing, and the section pairs with standard smart-screw or bolted connections for fast assembly. S235JR is the general structural grade for indoor frames, painted purlins, and profiles that will be hot-dip galvanized after roll forming. At a nominal 18.13 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	400mm × 100mm × 3.5mm
Weight per Meter	18.133 kg/m
Material	Steel
Alloy/Grade	S235JR
Standard	EN 10162 / EN 10346
Profile Type	C (lipped channel)
Edge Lip (c)	30 mm
Developed Width	≈ 660 mm
Cross-Section Area	≈ 23.10 cm²
Moment of Inertia Iₓ	≈ 5387.0 cm⁴
Moment of Inertia Iᵧ	≈ 307.6 cm⁴
Section Modulus Wₑₗ,ₓ	≈ 267.01 cm³
Section Modulus Wₑₗ,ᵧ	≈ 39.68 cm³
Minimum Production Run	3 t
Finish	S235JR Uncoated
Available Lengths	6m, 12m
Standard Length	6 m
Minimum Order Length	168 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.

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, S235JR). Deflection is not checked and usually governs long spans. Indicative only — confirm with a project calculation.