| Company Name |
| A Leita Steel Construction (Pty) Ltd |
| Active Industrial Engineering Supplies, Fabrication |
| African Privity Investments (Pty) Ltd T/A Elgin Engineering |
| African Oxygen Ltd (Afrox) |
| Air Products South Africa (Pty) Ltd |
| Allied Furnace Consultants (Pty) Ltd |
| Anglo Operations Ltd |
| Arcelor Mittal South Africa Vanderbijlpark Works |
| Assmang Limited - Khumani Iron Ore Mine |
| August General Servicing |
| Babcock Africa (Pty) Ltd |
| BAE Systems - Land Systems South Africa |
| BIE International Engineers (Pty) Ltd |
| Bohler Steel (Africa) (Pty) Ltd |
| Boiler & Energy System Maintenance cc |
| Boksan Projects CC |
| Bureau Veritas |
| Cabinda Gulf Oil Company (CABGOC) (Angola) |
| Cadcon Steel |
| Chevron SA (Pty) Ltd |
| Churchyard & Umpleby Construction (Pty) Ltd |
| Conron Wheels & Allied cc |
| Cosira International (SA) (Pty) Ltd |
| De-Tec Unit Inspection |
| Duncrom Trading T/A Ducrom Financial Services |
| Eberspacher South Africa |
| Eastcape Midlands College |
| Eduardo Construction (Pty) Ltd |
| Elgin Brown & Hamer Namibia (Pty) Ltd - Namibia |
| Emission Control Technologies |
| Engen Petroleum Refinery |
| Engski Manufacturing |
| ERD Fabricators (Pty) Ltd |
| ESAB Africa Welding & Cutting (Pty) Ltd |
| Eskom Holdings |
| Eskom – Koeberg Nuclear Power Station |
| Falcon Engineering (SA) (Pty) Ltd |
| Fluor SA (Pty) Ltd |
| Gascon |
| GEA Aircooled Systems (Pty) Ltd |
| Genrec (Pty) Ltd |
| Gillingham Welding Systems CC |
| Goscor Arc Welding Solutions (Pty) Ltd |
| Grinaker LTA MEIP |
| Group Five Projects |
| GRW Engineering (Pty) Ltd |
| H&S Labour Brokers |
| Hendred Fruehauf Trailers (Pty) Ltd |
| High Profile Inspection Authority |
| Highveld Steel & Vanadium Corporation |
| Hi-Tech Pressure Engineering (Pty) Ltd |
| Howden Power (Pty) Ltd |
| Hulamin Ltd |
| Hydra-Arc (Pty) Ltd |
| Hydrac (Cameroon) |
| Impro Mobile Welding |
| Industrial Research & Development (Pty) Ltd |
| Innovative Inspection Services (Pty) Ltd |
| Johhann Wilkins Electrical & Mechanical Engineers |
| John Thompson a Division of Actom |
| Kentz (Pty) Ltd |
| KISME |
| Konti Industries |
| Kumba Iron Ore - Sishen Iron Ore Company |
| Kwa Zulu Inspection Services |
| Lesedi Nuclear Services |
| Lincoln Electric Company Southern Africa |
| Lloyds Register EMEA |
| Lockers Engineering (SA) (Pty) Ltd |
| Lurod Engineering cc |
| Macsteel VRN |
| Mathudi Lefula Trading Enterprises |
| Mechanical Marine & Boiler Engineers cc |
| Megchem Engineering & Drafting |
| Merz & McLellan |
| Messer Eutectic SA (Pty) Ltd |
| Metalock Industrial Services (Africa) (Pty) Ltd |
| Metrorail |
| Minerec |
| Mondi Kraft |
| Moody International South Africa (Pty) Ltd |
| Multotec Manufacturing (Pty) Ltd |
| Murray & Roberts MEI (Pty) Ltd |
| Namibian Engineering Corporation Stahl |
| Natal Inspection Services cc |
| Natal TSIS (Pty) Ltd |
| National Laser Centre |
| National NDT Services (Pty) Ltd |
| Natref |
| NCP Chlorchem |
| Northlink College |
| Osborn Engineered Products SA (Pty) Ltd |
| Parsons Brinckerhoff (Pty) Ltd |
| Petrosa (Pty) Ltd |
| P M Duys |
| Pressure Vessel Manufacturing Association |
| Pretoria Portland Cement |
| Professional Institute of Industrial Technology & Administration |
| Pro-Tec Boiler Inspection & NDT Services |
| Randwater |
| Raysonics (Pty) Ltd |
| Renttech South Africa (Pty) Ltd |
| Robor Tube |
| Robotic Innovations (Pty) Ltd |
| Rollfab (Pty) Ltd |
| SA Five Engineering (Pty) Ltd |
| SA Nuclear (NECSA) |
| SAMTOR (Pty) Ltd |
| Sandvik Mining and Construction RSA (Pty) Ltd |
| Sappi Saicor (Pty) Ltd |
| Sasol Infrachem |
| Sasol Synfuels |
| Sapref |
| SA Welding (Pty) Ltd |
| Scott Steel Projects (Pty) Ltd |
| Sectional Poles Africa (Pty) Ltd |
| South African Compensators (Pty) Ltd |
| SOS Tool & Plant Hire |
| Stainless Fabricators |
| Steinmuller Engineering Services (Pty) Ltd |
| Styria Engineering (Pty) Ltd |
| Tank Clinic (Pty) Ltd |
| Tanker Repair Division |
| Thomas Foundry (Pty) Ltd |
| Thuthuka Welding Products |
| Transnet Freight Rail |
| Transwerk |
| Trucking & Engineering (Pty) Ltd |
| Tubular Technical Construction (Pty) Ltd |
| TUV Rheinland |
| UHDE a division of Thyssen Krupp PDNA Engineering (Pty) Ltd |
| Umgungundlovu FET College |
| Valortrade 224 (Pty) Ltd T/A NEDA Engineering Group |
| WASA (Pty) Ltd |
| Weartech (Pty) Ltd |
| West Coast College |
| Wetback Contracts (Pty) Ltd |
| X-METALE |
| Zimmermann & Jansen SA (Pty) Ltd |
| Zlatev (Pty) Ltd |