Sponsoring Members
- APA Group
- Dampier Bunbury Pipeline (DBNGP)
- Epic Energy Pty Ltd
- Jemena Pty Ltd
- PETRONAS
- South East Australia Gas (SEAGas)
Lead Members
- AJ Lucas Group Ltd
- Bredero Shaw Australia Pty Ltd
- Caltex Australia Petroleum Pty Ltd
- Energy Infrastructure Management Pty Ltd
- Esso Australia
- McConnell Dowell Constructors (Aust) Pty Ltd
- Nacap Australia Pty Ltd
- OneSteel Oil and Gas Pipe
- Orrcon Pty Ltd (Pipe & Large Tubular Division)
- Queensland Gas Company Limited
- Sargent
- Saipem (Portugal) Comercio Maritimo
- Solar Turbines Australia
- Transfield Services Limited
- WestNet Energy
- WDS Limited