This selection of companies in Gauteng primarily comprises established firms in chemical manufacturing, mining, and related industries. Many of these entities, such as S.A.S., Sappi, and PG Group (Pty) Ltd, were founded in the mid-20th century or earlier, indicating a mature industrial base. A significant number are involved in resource transformation, from coal to energy, or raw materials to construction and industrial products.
Key players include S.A.S., which produces liquid fuels and chemicals from coal, and Sappi, a global provider of sustainable woodfibre materials. PG Group (Pty) Ltd is a major integrated glass business, while AECI Mining supplies mining chemicals and explosives. Afrox is a significant supplier of gases and welding products, and Foskor processes phosphate rock. The companies are largely headquartered in cities like Sandton and Johannesburg, forming a concentration of industrial and corporate activity in the region.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 | 31,000 | ||||
| 2 | 7,962 | ||||
| 3 |
PG Group (Pty) Ltdpggroup.co.za
A leading integrated glass business in Southern Africa, manufacturing, distributing, and installing automotive & building glass, aluminium doors & windows, and window film solutions |
2,773 | |||
| 4 |
AECI Miningaecimining.com
Provider of state-of-the-art mining chemicals and explosives to optimize mineral processing and enhance safety, efficiency, and sustainability in mining operations globally |
2,463 | |||
| 5 |
Afroxafrox.co.za
Supplier of gases and welding products, services, and technologies to healthcare, hospitality, food, beverage, energy, mining, steel, and automotive sectors. |
1,749 | |||
| 6 |
Foskorfoskor.co.za
Vertically integrated phosphate producer in South Africa, processing phosphate rock concentrate to stimulate crop yields and improve agricultural productivity |
1,467 | |||
| 7 |
Sasol Synfuels International (Pty) Ltd.sasol.com
An oil and energy company based in South Africa that specializes in synthetic fuel production and international operations Located in Johannesburg |
1,410 | |||
| 8 |
Afrimatafrimat.co.za
A leading player in mining and materials, listed on the Main Board JSE Limited in the 'Construction & Building Materials' sector |
1,378 | |||
| 9 |
Omnia Holdingsomnia.co.za
A diversified chemicals group providing innovative solutions for agriculture, mining, and chemical industries, promoting responsible chemical use and cleaner technologies |
1,065 | |||
| 10 |
PG Bisonpgbison.co.za
The company offers a range of wood-panel products for various living spaces, prioritizing excellence, sustainability, and local manufacturing |
708 | |||
| 11 |
Sephaku Cementsephakucement.co.za
Sephaku Cement produces top-quality, affordable cement and clinker in South Africa, prioritizing ethics, transparency, and environmental sustainability in their manufacturing process |
633 | |||
| 12 |
Rand Refinery Limitedrandrefinery.com
Leading precious metals refiner focusing on responsible sourcing, smelting, assaying, vaulting, and logistics while emphasizing quality and sustainability. |
523 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 13 |
Mpact Plastic Containersmpcsa.co.za
Manufacturer of environmentally friendly plastic containers, leading the industry with unique solutions, quality accreditation, and a commitment to sustainability and reducing carbon footprint |
513 | |||
| 14 |
PROXA Waterproxawater.com
A leading water treatment specialist with global reach, serving various industries with integrated solutions, innovative products, and a focus on sustainability and excellence |
428 | |||
| 15 |
NCP CHLORCHEMncp.co.za
Leading manufacturer of chlorine, caustic soda, and chlor alkali derivatives serving local and overseas markets in various industries with a focus on quality products and services |
413 | |||
| 16 |
SAFRIPOLsafripol.com
A leading polymer producer in South Africa, Safripol serves local, African, and global markets with High-Density Polyethylene, Polyethylene Terephthalate, and Polypropylene |
400 | |||
| 17 |
Wispeco Aluminiumwispeco.co.za
Leading African supplier of aluminium extrusions, offering quality products, competitive pricing, technical support, and eco-friendly solutions, owned by Remgro (Pty) Ltd |
356 | |||
| 18 |
Norcros SAnorcros.co.za
A leading manufacturer and retailer of ceramic tiles, adhesives, sanitaryware, and plumbing materials, with a focus on quality, innovation, and customer service |
325 | |||
| 19 |
AEL Intelligent Blastingaelworld.com
Specializing in blasting solutions for mining, quarrying, and construction, we offer top-tier products and services using cutting-edge technologies for various applications |
307 | |||
| 20 |
Watercare Innovationswatercareinnovations.com
Watercare Innovations specializes in water purification solutions, offering tailored water treatment chemicals and engineered plants for potable and wastewater purification worldwide |
209 | |||
| 21 |
FUCHS LUBRICANTS SAfuchs.com
Global Group with German roots, leading independent supplier of lubricants for various sectors, offering over 10,000 products and custom-made solutions for diverse applications |
186 | |||
| 22 |
WILECwilec.co.za
Africa's largest manufacturer and supplier of materials and solutions for electric rotating machines, transformers, motors, and general industries with technical support from global partners |
185 | |||
| 23 |
Medal Paintsmedalpaints.co.za
Manufacturing decorative, industrial, and waterproofing coatings alongside supporting products for thirty years while actively engaging in social community projects for disadvantaged groups. |
182 | |||
| 24 |
Promac Paintspromacpaints.co.za
Independent manufacturer of decorative and light industrial coatings, cleaners, primers, and sealers, emphasizing innovation, efficiency, expertise, research, and family spirit |
181 | |||
| 25 |
SINVACsinvac.co.za
Leading plastic product manufacturer and supplier specializing in HDPE, LDPE, and LLDPE production through extrusion, rotational moulding, and plastics fabrication for various industries |
150 | |||
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How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.
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