- Danieli Corus, USA
- Danieli Corus, Canada
- Ispat Inland, USA
- Bloom Engineering GmbH, Germany
- Impexa S.L., Spain
- SMS Demag AG, Germany
- Pipeline Supplies, Australia
- China Steel, Taiwan
- Rohrleitungsbau Dillingen GmbH, Germany
- Rautaruukki Raahe Steel, Finland
- Küttner Energy GmbH, Germany
- ThyssenKrupp Xervon GmbH, Germany
- Didier - M&P Technica, Spain
- Richter Cooling Systems GmbH, Germany
- Schneider Industrieofenbau GmbH, Germany
- IST Industrie - und Stranggiesstechnik GmbH, Germany
- Process - Elektronic GmbH, Germany
- Blue Scope Steel, Australia
- Tata Steel, India