The Pittsburgh Water and Sewer Authority (PWSA) is the largest combined water, sewer, and stormwater authority in Pennsylvania, serving over 500,000 consumers throughout the City of Pittsburgh and surrounding areas.
Incorporated in 1922 by founders and brothers Ralph, Paul, and Walter Sloan, the initial focus of Sloan Lubrication Systems was mechanical lubricators used in heavy industry, steam-to-water heat exchangers, and steam traps. Walter’s son John joined the company after his World War II service. He helped the business shift to provide accurate, protected lubrication systems for the fast-growing natural gas transmission industry.
Every day around the world, HWI’s people and products stand up to the challenges and pressures of every job. And for over 150 years, we’ve served virtually every industry that needs refractory products to do its job. As HWI, A member of Calderys, we deliver one of the industry’s widest, deepest lines of refractory solutions. Our world-class refractory products perform to the highest degree. And by bringing a proactive, customer-focused mindset to work every day, we’re able to provide superior value to our customers and their businesses.
Founded in 1978 by Peter J. Arnoldt as Ductmate Industries, DMI Companies, Inc. is now comprised of four strategic business units: Ductmate Industries, Aire Technologies, GreenSeam Industries, and Linx Industries. In 2005, the company restructured and created DMI Companies as the parent company of Ductmate and Aire Technologies. In 2015, GreenSeam pipe and fittings products branched off as a new division of DMI Companies called GreenSeam Industries (GSI), and Lindab USA was bought and renamed Linx Industries.
