Porter Pipe and Supply Company, 303 S Rohlwing Rd, Addison, IL 60101, US

Columbia Pipe & Supply Co. is an air-conditioning and heating contractor based in Rockford, Ill. The company supplies an array of products, including steel pipe, fittings/flanges, tube fittings, insulated-vent duct and valves. It also specializes in automation, controls plumbing, soil piping and drainage. Its list of hydronic equipment includes boilers, radiator, vents gauges, thermometers, gas regulators and meters strainers. Columbia Pipe & Supply Co. caters to the agricultural, automotive, biotechnology, food/beverage, petrochemical, power generation and wet/dry grain milling industries.