- Petrofac – London
- Saipem – Nigerian
- WorleyParsons – Australia
- Technip – France
- CB&I – Chicago, Illinois, USA
- SK Engineering & Construction – South Korea
- Hyundai Heavy Industries – South Korea
- SAMSUNG Engineering – South Korea
- NPCC – Abu Dhabi (UAE)
- TATA Projects LTD – Ahmedabad, Gujarat