Profile: Thompson Culvert Co., Inc. offers heavy-duty steel drainage components, water control devices and a wide range of associated products. Our products include corrugated steel pipe, end sections, structural plate, storm water detention structures, surface drain, water control gates, air curtain destructor and fabricated steel. Our corrugated steel pipe is used for culverts, storm sewers, underdrains, spillways, underpasses and conveyor tunnels. Our surface drain is designed to collect and remove surface water from roads, airport runways, parking lots, curb & gutters.