Sterling Plastics are situated in Middelburg, Mpumalanga. This allows us to service the mining and industrial sectors from a regional central location. We provide a 24/7 service for repairs on thermoplastic pipes, tanks, valves, pumps etc. We do workshop fabrication, tanks, wear resistant products, on site installation and maintenance.

Our expertise on piping ranges from 16mm to 1000mm O.D. We are also suppliers of valves, hoses, pipes, pipe fittings, pumps, layflat hoses and many more.

Our technicians are all qualified either through the Plastic Federation of South-Africa or the South African Institute of welding. We are members of SEESA which handles our external auditing for legal compliance to the OHSA requirements. We are BEE rated. We are registered with the Dept. of  trade and industry relating to our our skills development plan.


We are accredited to do business with most of  the mining houses in the Mpumalanga, Gauteng and Limpopo areas. Some of our clients include:

Assmang Chrome Dwarsrivier Anglo American Inyosi Coal (Pty) Ltd Anglo Operations Limited
Afrigrit (Pty) Ltd ASA Metals (Pty) Ltd Burgersfort Bateman Minerals & Metals (Pty) Ltd
Black Wattle Colliery (Pty) Ltd Bulero Transport & Projects Columbus Stainless (Pty) Ltd
Conway Johnson Witbank Dilokong Chrome Mine Burgersfort Early Bird Farms
Eastern Chrome Mines  - Samancor Elandsfontein Colliery Eyethu Coal (Pty) Ltd
Exxaro NBC Belfast Ferrometals Witbank Evraz Highveld Steel & Vanadium
Eskom Holdings Ltd Hendrina Power Station Exxaro Leeupan Graspan Colliery
Ingwenya Mineral Processing (Pty) Ltd Incledon (DPI Plastics) Kanhym Estates
Kynoch Fertilizer Middelburg Leeuwfontein Myne Kendal Multotec Manufacturing (Pty) Ltd
Minppex Hakhano Colliery Minerals Operations Executive (Pty) Ltd Mafube Mining
Middelwit Stene (EDMS) BPK Nkomati Joint Venture Optiumum Colliery
PJ Cooper Technology Quarry Cats (G5 Construction) Rand Carbide
Samancor Chrome Ltd SRS-Rietspruit SASOL Nitro
SASOL Fertilizer Endicott Sylvania Metals Steve Tshwete Municipality
Tshemo Mining Services Thos & Begbie & Company (Pty) Ltd Two Rivers Platinum
Transalloys Tubatse Ferro Chrome (Pty) Ltd Vanchem Vanadium Products
Wescoal Mining (Pty) Ltd Xstrata Alloys