Structural steel frames
Portal frames, lattice trusses, columns, crane runway beams and bracing — calculated, then drawn as shop drawings before a single cut is made.
- Portal frames
- Lattice trusses
- Bracing
Algiers — Steel construction
From the design calculations to the last bolt.
SPMETAL engineers, fabricates in its own workshop and erects on site: warehouses, production halls and steel structures. We also sell steel over the counter — sections, tubes, sheet and angle.
- Grades
- S235 JR / S275 JR steel
- Spans
- Up to 40 m with no intermediate column
- Scope
- Design, fabrication and erection
- Coverage
- Algiers and neighbouring wilayas
What we do
One contractor, from the frame to the roof sheet.
We carry the job end to end: the load-bearing structure, the envelope that closes it, and the metalwork that fits it out. One point of contact, one programme.
Warehouses & industrial buildings
Storage sheds, production halls, depots and showrooms delivered turnkey: structure, roofing, cladding, doors and daylighting.
- Warehouses
- Workshops
- Turnkey
Roofing & cladding
Profiled steel sheet, insulated sandwich panel, translucent roof lights, gutters and rainwater downpipes.
- Profiled sheet
- Sandwich panel
- Gutters
Mezzanines & floors
Extra floor area inside an existing building: column-and-beam grids, composite deck or chequer plate, stairs and handrails.
- Composite deck
- Chequer plate
- Stairs
Metalwork & fittings
Handrails, gates and doors, straight or spiral stairs, access walkways, shelters and canopies.
- Handrails
- Gates
- Walkways
Steel supply
Steel by the bar or cut to length, for tradespeople, companies and private customers: sections, tubes, sheet, angle and flat bar.
- Retail
- Cut to length
- Delivery in Algiers
In pictures
Steel, from raw bar to erected frame.
The trade comes down to three moves: pick the right section, weld it clean, erect it plumb. Everything else is method.
Illustrative photographs.
Steel supply
The same stock we build with, sold over the counter.
The steel that goes out to our own sites. Full bar or cut to length, collection in Algiers or delivery. Masses given for a density of 7.85 kg/dm³.
Parallel-flange I-beams, the workhorse of our portal frames. Supplied in 12 m bars, cut to length on request.
| Reference | h × b (mm) | Mass per metre | Weight per 12 m bar |
|---|---|---|---|
| IPE 80 | 80 × 46 | 6.00 kg/m | 72.0 kg |
| IPE 100 | 100 × 55 | 8.10 kg/m | 97.2 kg |
| IPE 120 | 120 × 64 | 10.40 kg/m | 124.8 kg |
| IPE 140 | 140 × 73 | 12.90 kg/m | 154.8 kg |
| IPE 160 | 160 × 82 | 15.80 kg/m | 189.6 kg |
| IPE 180 | 180 × 91 | 18.80 kg/m | 225.6 kg |
| IPE 200 | 200 × 100 | 22.40 kg/m | 268.8 kg |
| IPE 220 | 220 × 110 | 26.20 kg/m | 314.4 kg |
| IPE 240 | 240 × 120 | 30.70 kg/m | 368.4 kg |
| IPE 270 | 270 × 135 | 36.10 kg/m | 433.2 kg |
| IPE 300 | 300 × 150 | 42.20 kg/m | 506.4 kg |
| IPE 330 | 330 × 160 | 49.10 kg/m | 589.2 kg |
| IPE 360 | 360 × 170 | 57.10 kg/m | 685.2 kg |
| IPE 400 | 400 × 180 | 66.30 kg/m | 795.6 kg |
Steel weight calculator
Pick a section, a length and a quantity: the total weight tells you what the haulage looks like and gives us a basis for pricing.
Total weight2,532kg
- Mass per metre
- 42.20 kg/m
- Weight per bar
- 253.2 kg
- Total length
- 60.0 m
- Tonnage
- 2.532 t
Theoretical masses, excluding rolling tolerances and surface treatment. Send us your cutting list for a firm price.
How a job runs
Five stages, in this order, no exceptions.
A steel frame is won before it reaches the workshop. The survey and the design calculations set everything downstream: the sections, the connections and the programme.
Site visit & survey
Measured survey, setting out, access and craneage constraints, ground conditions and any existing foundations.
Design & drawings
Load take-down, sizing to Eurocode 3 and Algerian DTR, general arrangement and detail drawings issued for your approval.
Shop fabrication
Cutting, drilling, assembly on jigs, MIG/MAG and stick welding, visual inspection of every bead before dispatch.
Surface treatment
Degreasing, red-oxide primer, finish paint in the colour of your choice, or hot-dip galvanising for exposed steelwork.
Erection & handover
Transport, craneage, high-strength bolting, plumbing and alignment, then handover of the completed structure with you on site.
Building types
What we build, and at what spans.
Typical figures to place your project. Span and clear height are the two numbers to give us first: they drive the sections, and therefore the price per m².
| Building | Typical span | Clear height | Roofing |
|---|---|---|---|
| Storage warehouse | 12 – 30 m | 5 – 8 m | Profiled steel sheet |
| Production hall | 15 – 40 m | 6 – 10 m | Sandwich panel |
| Showroom / retail unit | 10 – 20 m | 4 – 6 m | Sandwich + roof lights |
| Car park canopy | 5 – 12 m | 2.5 – 4 m | Steel sheet or polycarbonate |
| Industrial mezzanine | 4 – 8 m (grid) | 2.5 – 3 m | Chequer plate / composite |
| Access walkway | 6 – 18 m | — | Open grating |
Quotation
Tell us about the job and we will call you back.
Span, length, clear height and the commune are enough for a first estimate. A drawing, a sketch or even a photograph of the plot speeds up the pricing.