Kay Mainline is an Australian manufacturer of Auger Flights, Screw Flights and Spiral Welded Tubes, based in Melbourne. Kay Mainline offers design, fabrication & installation services of Auger Flights, Screw Flights & Screw Conveyors for Australian drilling, piling & mining industries; as well as design and manufacture of Spiral Welded Tubes for agricultural, mining and construction industries. We proudly service our valued customers across metropolitan Melbourne, the state of Victoria and Australia-wide.