Perma-Pipe International Holdings, Inc. (PPIH)
Perma-Pipe International Holdings, Inc., together with its subsidiaries, engineers, designs, manufactures, and sells specialty piping and leak detection systems. It offers provides and jacketed district heating and cooling piping systems for energy distribution from central energy plants to various locations.
Northwest Pipe Company (NWPX)
Northwest Pipe Company, together with its subsidiaries, manufactures and supplies water related infrastructure products in North America. It operates in two segments, Engineered Steel Pressure Pipe (SPP) and Precast Infrastructure and Engineered Systems (Precast).
DXP Enterprises, Inc. (DXPE)
DXP Enterprises, Inc., together with its subsidiaries, engages in distributing maintenance, repair, and operating (MRO) products, equipment, and services to the energy and industrial customers primarily in the United States and Canada.