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Engineering Design
In-house structural engineering, detailing and BIM modelling — every connection calculated, every member specified.
Est. 2001 · KwaZulu-Natal, South Africa
We BuildStructuresYou're Proud Of.
Structural steel design, fabrication & erection — delivered with precision and built to last.
24+
Years in Operation
8
Industry Sectors
1000+
Projects Delivered
CIDB
Registered Contractor
About CSI
Structural steel specialists, since 2001.
Cousins Steel International is a KwaZulu-Natal-based engineering firm specialising in the design, fabrication and erection of structural steel for commercial, industrial and infrastructure projects across South Africa.
From compact warehouses to complex turnkey developments, we partner with clients to deliver steel structures that perform — engineered with precision, fabricated with discipline, and erected by craftsmen who take pride in their work.
- Engineer steel solutions tailored to every site and budget
- Maintain the highest standards of workmanship and safety
- Deliver projects on time, every time
- Foster long-term relationships with clients and partners
- Empower local talent and contribute to South African industry
What We Do
End-to-end structural steel — under one roof.
We are a full-service structural steel contractor. Whether you need a standalone fabrication run or a complete turnkey build, our team integrates engineering, manufacturing and installation into a single, accountable workflow.
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Steel Fabrication
Precision cutting, welding and finishing in our workshop, with quality control at every stage of production.
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Erection & Installation
Skilled riggers and project supervisors deliver safe, on-schedule erection on sites across Southern Africa.
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Full Turnkey Package
From concept to handover — design, supply, fabricate and install. One contractor, one accountability.
Sectors We Serve
Eight industries. One trusted contractor.
Why CSI
Three reasons clients keep coming back.
Fully In-House Capability
Design, fabrication and erection under one roof. Tighter timelines, cleaner accountability, fewer surprises on site.
Professional Engineering Team
Qualified structural engineers and detailers ensure every member, weld and connection is calculated and signed off.
Quality at Every Stage
QA/QC procedures from raw steel intake through to final handover — backed by full traceability and documentation.
Credentials
Registered & compliant across all requirements.
CSI is a CIDB registered contractor and an active member of SAISC, adhering to the highest engineering and safety standards demanded by South African construction. Our team holds the certifications required to tender, execute and sign off projects of any scale.
CIDB Registered
BEE Compliant
ECSA · SAICE
SAISC Member
Latest Updates
From our LinkedIn.
Cousins Steel International
1m ·
#CousinsSteel #Toyota #MezzanineStructure #KZN
Cousins Steel International
2d ·
#CousinsSteel #Tanzania #BuildingAfrica #StructuralSteel
Cousins Steel International
5d ·
#CousinsSteel #Intersite126 #SteelSheeting #Precision
Cousins Steel International
1w ·
#RoofWetting #CousinsSteel #ShaveAndGibson #Construction
Get In Touch
Let's build something together.
Tell us about your project. We'll respond with the right engineer on our team and a clear next step within one business day.
- Phone+27 31 309 4444
- Emailsales@cousinssteel.co.za
- OfficeKwaZulu-Natal, South Africa