Mainlining provides a full range of engineering services for the building, testing, and commissioning of the company's equipment. This equipment, which is leased to pipe manufacturers and lining contractors, has been developed and improved by Mainlining through seven decades of field experience.

The Mainlining team includes a range of highly qualified engineers and designers capable of successful problem solving in virtually any situation. The design team investigates problems related to the engineering involved in "in-pipe" works.