Global infrastructure company T.D. Williamson (TDW) has received a strategic investment from Apollo— though Houston-based private equity firm SCF Partners will retain a majority ownership stake in the infrastructure company, TDW said June 10.

SCF Partners acquired TDW in 2022. The size of Apollo’s investment was not disclosed.

TDW has been a leader in the pipeline maintenance and integrity industry for more than 100 years. The company’s offerings include a suite of maintenance and asset optimization solutions that enhance safety, reliability and performance for the full lifecycle of pipeline infrastructure.

The company holds more than 500 registered patents, including “innovations in advanced isolation, integrated pigging, in-line integrity assessment and repair — deployed across both infrastructure and utility end markets,” the company said.

“…We are committed to delivering best-in-class, technically differentiated solutions to support the evolving needs of the operators of critical pipeline infrastructure. This investment by Apollo Funds, alongside our existing relationship with SCF Partners, marks a significant milestone in our journey as we continue to invest in meeting the needs of our customers through innovation and expanding our global reach," said TDW CEO Bob McGrew

Scott Browning, partner at Apollo, said TDW has a long track record of innovation and customer service and that the investment company will support TDW management and SCF to accelerate strategic growth initiatives.

"For over a century, TDW has stood at the forefront of pipeline integrity and innovation," commented Deviyani Misra-Godwin, managing director at SCF. "Over the past three years, we've seen tremendous growth in the company, with the team expanding its technology and product portfolio, deepening customer relationships, and continuing to lead the way on safety and operational excellence. We're honored to continue to work alongside TDW's world-class team and excited to welcome Apollo Funds as a strategic partner in this next chapter of growth."

TDW and SCF Partners were advised by Vinson & Elkins LLP. Kirkland & Ellis LLP advised the Apollo Funds.