The EST Group provides a wide range of lifecycle products and services for tubular heat exchangers, condensers, pipes, piping systems and pressure vessels. It serves the power generation, refining, petrochemical, fine chemical and pharmaceutical industries worldwide. The EST group of companies includes Expansion Seal Technologies, EST Field Services and EST Heat Exchangers. Expansion Seal Technologies is a global manufacturer and designer of pipe and tube pressure testing and plugging equipment. EST Field Services offers a variety of services, such as heat exchanger tube testing, inspection, mechanical tube cleaning, tube sleeving, plugging and pulling and partial retubing operations. EST Heat Exchangers designs, fabricates and repairs oil coolers, chillers and pressure vessels. The EST Group is located in Hatfield, Pa., and serves its customers in the United States through a network of independent manufacturers representatives and factory-authorized installation contractors.