Company lists · Data refreshed September 2026

Top 25 Structural steel manufacturers based in South Africa

Name: Structural steel manufacturers based in South Africa
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 18, 2026 121 companies tracked

RevenueBase identified 121 structural steel manufacturers headquartered in South Africa as of September 2026 and tracks 1,339 professional contacts across them, including 248 with verified work emails. Germiston is the largest hub.

This list covers structural steel manufacturers headquartered in South Africa, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 18, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 18, 2026 86% judged on-target in blind review

121Companies

1,339Contacts tracked

248Verified emails

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The 25 largest structural steel manufacturers based in South Africa

Ranked by team size

Top 25 of 121 structural steel manufacturers based in South Africa, ranked by team size, largest first. Data refreshed Sep 18, 2026. RevenueBase Smart Search rates how each company's information relates to structural steel manufacturers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Steel Services And Allied Industries	Strong evidence	Near Johannesburg, South AfricaHQ checked Sep 18, 2026	501-1,000	112 contacts →
	Strong evidence “The Steel Services & Allied Industries Group specialises in SMPP projects for the mining and construction industries – managing structural steel projects.” Source: RevenueBase Database · checked Sep 18, 2026
2	TW Profile Services	Partial evidence	Anderbolt, South AfricaHQ checked Sep 18, 2026	201-500	98 contacts →
	Partial evidence “Since 1994, TW Profile Services has been at the forefront of South Africa’s steel processing evolution-setting the standard as a dominant force in precision engineering and…” Source: RevenueBase Database · checked Sep 18, 2026
3	Clotan Steel	Strong evidence	Vanderbijlpark, South AfricaHQ checked Sep 18, 2026	201-500	85 contacts →
	Strong evidence “Clotan Steel is a privately owned manufacturer of roof sheeting, cold formed sections and slit strip that has been in operation from modern premises in Vanderbijlpark since 1983.” Source: RevenueBase Database · checked Sep 18, 2026
4	Tubecon Africa	Strong evidence	Pretoria, South AfricaHQ checked Sep 18, 2026	51-200	61 contacts →
	Strong evidence “Tubecon Africa (Pty) Ltd is a leading manufacturer and supplier of cold-formed steel tubes and profiles in Southern Africa.” Source: RevenueBase Database · checked Sep 18, 2026
5	Unica Iron And Steel	Strong evidence	Babelegi, South AfricaHQ checked Sep 18, 2026	501-1,000	43 contacts →
	Strong evidence “Unica Iron and Steel is a first of its kind, fully integrated mini steel plant, manufacturing light and medium structural steel from iron scrap.” Source: RevenueBase Database · checked Sep 18, 2026
6	Facade Solutions	Indirect evidence	Glen Anil, South AfricaHQ checked Sep 18, 2026	51-200	40 contacts →
	Indirect evidence “Facade Solutions offers a complete unique service system to design, supply and construct a customised building solution.” Source: RevenueBase Database · checked Sep 18, 2026
7	Khonzi Engineering Services	Indirect evidence	Richards Bay, South AfricaHQ checked Sep 18, 2026	51-200	40 contacts →
	Indirect evidence “Established by Nokuthula Madondo in November and based in Richards Bay, South Africa with a branch in Durban Kwazulu-Natal.” Source: RevenueBase Database · checked Sep 18, 2026
8	Pegasus Steel South Africa	Partial evidence	Johannesburg, South AfricaHQ checked Sep 18, 2026	51-200	33 contacts →
	Partial evidence “Established in 1995, Pegasus Steel offers professional steel processing services, working with sheet and plate in carbon steel, stainless steel and aluminium.” Source: RevenueBase Database · checked Sep 18, 2026
9	Qinisa Steel Solutions	Strong evidence	Alberton, South AfricaHQ checked Sep 18, 2026	11-50	32 contacts →
	Strong evidence “Located in Alberton, South Africa, we offer Tube Laser Cutting, Structural Steel & Plate processing using latest technology BLM fibre tube laser cutting, Ficep CNC drilling…” Source: RevenueBase Database · checked Sep 18, 2026
10	Structa Group PTY LTD	Strong evidence	Meyerton, South AfricaHQ checked Sep 18, 2026	1,001-5,000	29 contacts →
	Strong evidence “The Structa Group of Companies is a Privately owned South African Company, which consists of various subsidiaries that supply structural steel products and related services for…” Source: RevenueBase Database · checked Sep 18, 2026
11	Cadcon PTY LTD	Partial evidence	Pretoria, South AfricaHQ checked Sep 18, 2026	201-500	27 contacts →
	Partial evidence “Over three decades, CADCON has become one of South Africa's leading experts in steel and construction.” Source: RevenueBase Database · checked Sep 18, 2026
12	RSB Contracts	Partial evidence	Boksburg, South AfricaHQ checked Sep 18, 2026	51-200	26 contacts →
	Partial evidence “We here at RSB Contracts bring structure to your design.” Source: RevenueBase Database · checked Sep 18, 2026
13	Leita Steel	Strong evidence	Pretoria, South AfricaHQ checked Sep 18, 2026	51-200	25 contacts →
	Strong evidence “Leita Steel, a privately owned company founded in 1968, has grown into one of Africa’s leading names in steel construction and fabrication, specialising in high-quality structural…” Source: RevenueBase Database · checked Sep 18, 2026
14	Channel Construction	Strong evidence	Durban, South AfricaHQ checked Sep 18, 2026	11-50	23 contacts →
	Strong evidence “Channel Construction was founded over 20 years ago as a medium to heavy fabricator and erector of structural steel including the manufacturing of modular structures, pipe racks…” Source: RevenueBase Database · checked Sep 18, 2026
15	Paragon Steel Structures	Indirect evidence	Pietermaritzburg, South AfricaHQ checked Sep 18, 2026	51-200	21 contacts →
	Indirect evidence “PSS started fabrication from a 108 square metre factory and expanded over the years to a square metre factory based in Mkondeni.” Source: RevenueBase Database · checked Sep 18, 2026
16	Kerizzma Steel	Partial evidence	Johannesburg, South AfricaHQ checked Sep 18, 2026	11-50	19 contacts →
	Partial evidence “Kerizzma Steel is a company based out of 20 Hospital Street, Johannesburg, Gauteng, South Africa.” Source: RevenueBase Database · checked Sep 18, 2026
17	Cousins Steel International PTY LTD	Strong evidence	Durban, South AfricaHQ checked Sep 18, 2026	51-200	16 contacts →
	Strong evidence “Cousins Steel International (Pty) Ltd offers engineering design, supply, fabrication and the erection of economical steel structures.” Source: RevenueBase Database · checked Sep 18, 2026
18	Special Steels	Partial evidence	Wadeville, South AfricaHQ checked Sep 18, 2026	51-200	14 contacts →
	Partial evidence “Special Steels supplies high-quality steel, emphasising low to high carbon and alloy steels.” Source: RevenueBase Database · checked Sep 18, 2026
19	Grating World PTY LTD	Indirect evidence	Germiston, South AfricaHQ checked Sep 18, 2026	51-200	11 contacts →
	Indirect evidence “GRATING WORLD is a member of a specialised equipment group which has provided solutions for engineers, architects, designers and end-users since 1956 … from minerals…” Source: RevenueBase Database · checked Sep 18, 2026
20	Imisebenzi Steel-Worx	Partial evidence	Ekurhuleni, South AfricaHQ checked Sep 18, 2026	11-50	11 contacts →
	Partial evidence “Imisebenzi Steel-Worx has been operational since 2015 and is a thriving business concern within the steel manufacturing sector.” Source: RevenueBase Database · checked Sep 18, 2026
21	Magnus Group	Strong evidence	Kempton Park, South AfricaHQ checked Sep 18, 2026	11-50	10 contacts →
	Strong evidence “Magnus Steel (PTY) Ltd was founded in December 2011 and is a stockist of all manufactured steel products.” Source: RevenueBase Database · checked Sep 18, 2026
22	LSF Supplies PTY LTD	Partial evidence	Johannesburg, South AfricaHQ checked Sep 18, 2026	11-50	9 contacts →
	Partial evidence “1Stop Light Steel Frame Shop.” Source: RevenueBase Database · checked Sep 18, 2026
23	SE Steel Fabrication	Strong evidence	Krugersdorp, South AfricaHQ checked Sep 18, 2026	51-200	9 contacts →
	Strong evidence “About SE Steel Fabrication SE Steel Fabrication (Pty) Ltd is a trusted structural steel specialist delivering complete steel solutions across commercial, industrial, and…” Source: RevenueBase Database · checked Sep 18, 2026
24	CSP Engineering And Fabrication	Indirect evidence	Germiston, South AfricaHQ checked Sep 18, 2026	51-200	7 contacts →
	Indirect evidence “COMPANY PROFILE Physical Address: Tel: 0105910760 Corner Dekema and Manchester Road – Wadeville Fax: 0105910759 P.O.Box 17318, Randhart, 1457 CSP Engineering and Fabrication (PTY)…” Source: RevenueBase Database · checked Sep 18, 2026
25	SM Structures	Strong evidence	Sandton, South AfricaHQ checked Sep 18, 2026	1-10	6 contacts →
	Strong evidence “SM Structures Steel Buildings’ pre-engineered steel buildings are 100% manufactured in South Africa, and distributed worldwide.” Source: RevenueBase Database · checked Sep 18, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: structural steel manufacturers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names structural steel manufacturers.
Partial evidence: Its own public description names part of structural steel manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name structural steel manufacturers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 121 structural steel manufacturers based in South Africa

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Structural steel manufacturers based in South Africa at a glance

As of Sep 18, 2026

18.5%Verified-email coverage

11.1Average contacts per company

11-50Median size (employees)

5.8%Largest-city concentration · Germiston

Sep 18, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for South Africa, so it is reported there. Company counts and contact totals on this page are exact for South Africa, over 121 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among structural steel manufacturers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in South Africa whose own description of what they do matches “structural steel manufacturers”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names structural steel manufacturers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among structural steel manufacturers, and records with no verified work email. Companies headquartered outside South Africa are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 248 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 18, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names structural steel manufacturers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many structural steel manufacturers are there based in South Africa?

RevenueBase identified 121 structural steel manufacturers headquartered in South Africa as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Steel Services And Allied Industries, headquartered in Johannesburg, tops this list with the largest team on record.

Which city has the most structural steel manufacturers?

Germiston leads with 7 headquartered companies, followed by Johannesburg (7) and Pretoria (7).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 248 verified decision-maker contacts tracked across these 121 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 18, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.