Factory

Steel fabrication factory

A 5,000 m² structural steel fabrication factory in Al-Sulay, Riyadh — built for our own sites, and now a trusted supplier to external clients.

As part of our expansion plan, PROPER built a dedicated structural steel factory in Al-Sulay, Riyadh. It was launched to meet our own contracting commitments on structural steel — and has since become a trusted supplier to external clients in its own right.

What we fabricate

Columns & beams
Trusses & portal frames
Plate girders
Steel buildings & warehouses
Platforms, stairs & handrails
Towers, masts & flagpoles
Temporary & pedestrian bridges
Base plates, brackets & embeds
Light-gauge steel framing

1,000 t

Fabrication capacity per month
5,000 m²

Factory area

Steel factory

Uwais Al-Qarni StreetAl-Sulay, Riyadh 14262Kingdom of Saudi Arabia

Open in Google Maps →

Inside the factory

The machines on our floor.

01
CNC fiber laser cutting

Plate and sheet cut straight from the CAD file — accurate profiles, clean edges and holes that need no rework.
02
CNC plasma & oxy-fuel cutting

Thick plate for base plates, gussets, stiffeners and connection plates.
03
CNC press brake bending

Bent plates, channels, angles and cold-formed profiles, to the specified radius.
04
Hydraulic shearing

Fast, square cuts on plate and sheet before forming and assembly.
05
CNC band saws

Beams, columns and hollow sections cut to length and to mitre.
06
Drilling & punching

Bolt holes drilled and punched so site connections fit first time.
07
Welding stations

MIG/MAG (GMAW), flux-cored (FCAW), submerged-arc (SAW) and stick (SMAW) welding by qualified welders.
08
Overhead cranes

Overhead travelling cranes move heavy members safely through every bay.
09
Blasting & spray painting

Sand and shot blasting, then airless spray painting for an even, specified film thickness.

The line

From the drawing to the standing structure.

01
Design & detailing

Structural design and connection detailing in advanced software, checked against the Saudi Building Code and international standards.
02
Cutting & fabrication

Profiling, drilling and assembly of beams, columns, trusses and plate girders to the shop drawing.
03
Welding & inspection

Qualified welding procedures with controlled heat input, followed by dimensional checks and third-party NDT where the package calls for it.
04
Surface treatment

Blast cleaning and protective coating specified for the exposure the structure will actually live in.
05
Delivery & erection

Sequenced delivery to the erection programme, installed by PROPER crews — or supplied to your erector, marked and documented.

Standards

Built to the codes your consultant specifies.

SBC 306: Saudi Building Code — steel structures
AISC 360 · AISC 303: Structural steel design and the Code of Standard Practice
AWS D1.1 · D1.3: Structural welding code — steel and sheet steel
ASTM A36 · A572 · A992: Structural steel grades, traceable to mill certificates
ASTM F3125: High-strength structural bolts (A325 / A490)
ISO 8501-1 · ISO 12944: Surface preparation and corrosion protection by paint systems
ASTM A123 · ISO 1461: Hot-dip galvanized coatings
ISO 9001 · 14001 · 45001: Certified quality, environmental and safety management

Coating & corrosion protection

Protected for the Saudi climate.

Sandblasting to Sa 2½

Blast-cleaned to near-white metal, so the coating bonds to steel — not to rust or mill scale.
Zinc-rich & red-oxide primers

The first line of corrosion protection: zinc-rich for exposed steel, red oxide for protected interiors.
Epoxy paint systems

Hard-wearing epoxy coats built up to the specified dry film thickness (DFT).
Polyurethane topcoat

A UV-resistant finish that keeps its colour and gloss in the Saudi sun.
Intumescent fire-resistant paint

Fireproofing that swells in a fire to protect the steel for the rating the fire consultant specifies.
Hot-dip galvanizing

Zinc-coated steel for exposed, coastal and industrial structures that must last for decades.