WestStar Industrial Limited WestStar Industrial Limited (ASX: WSI) is an Australia-based industrial services company that provides engineering, fabrication, construction, and maintenance services to the resources, energy, oil and gas, petrochemical, water, marine, defence, and infrastructure sectors across Australia. The company operates through its wholly owned subsidiaries SIMPEC, Alltype Engineering, and Watmar, offering structural and mechanical piping; electrical and instrumentation contracting; fluid system equipment services, maintenance, and technical solutions; pipe, plate, and structural steel fabrication; non-process infrastructure; rotating equipment installation; asset management; maintenance shutdowns and turnarounds; OEM equipment technical support, parts, and services; design and construct/EPC projects; and multidiscipline turnkey construction contracting and project services. Incorporated in 2006 and headquartered in Naval Base, Western Australia, WestStar Industrial recently secured multiple contracts valued at A$40 million through its subsidiaries, including a $4 million structural, mechanical, and piping upgrade at Tianqi Lithium's Kwinana facility in September 2025, a $7 million engineering order book addition, and additional awards exceeding $47 million for compressor station facilities and plant upgrades, bolstering its presence in lithium processing and clean energy sectors.