Perma-Pipe International Holdings, Inc. is engaged in the manufacture and sale of piping systems. The Company engineers, designs, manufactures, and sells specialty piping systems and leak detection systems. Its Specialty piping systems include insulated and jacketed district heating, and cooling piping systems; primary and secondary containment piping systems for transporting chemicals, hazardous fluids and petroleum products; the coating and/or insulation of oil and gas gathering and transmission pipelines; and liquid and powder-based anti-corrosion coatings. The Company's leak detection systems are sold with its piping systems or on a stand-alone basis to monitor areas where fluid intrusion may contaminate the environment, endanger personal safety, cause a fire hazard, impair essential services, or damage equipment or property. The Company operates through one segment: Piping Systems.