Expansion Seal Technologies, a unit of the EST Group, Inc. (Formerly Expando Seal Tools, Inc.), is a global manufacturer and designer of pipe and tube pressure testing and plugging equipment. Since 1968 the company has specialized in development, manufacturing and marketing of tools and systems that greatly simplify the maintenance of shell and tube heat exchangers and that speed-up in-service inspection of pipe, pipelines, piping systems and pressure vessels.

Expansion Seal Technologies is dedicated to serving the Power Generation, Petro-Chemical, Refining, Pipeline, Shipbuilding and Boiler Manufacturing industries worldwide. The company's products are presently in service at over 50 Nuclear and 500 Thermal Power Plants throughout the United States, Europe and Asia. Within those industries we concentrate our sales efforts on Maintenance Engineers, Superintendents, Supervisors and Foremen; Operations Engineers, Planners and Outage Specialists to name but a few.

In 1987, in an effort to better serve the needs of our customers, the company prepared and adopted a Quality Assurance program under the guidelines of the U.S. Nuclear power industry standard 10CFR50 Appendix B. Over the years our quality program has evolved and expanded to incorporate additional U.S. Nuclear Power Industry requirements of ANSI N45.2 and NQA-1. Since August 1993 our quality program has been certified to the international quality standard ISO-9001.

We serve our customers in the United States through a well developed network of independent manufacturers representatives, and factory authorized installation contractors. In Canada, Europe and elsewhere around the world, our customers are served via a network of Distributors, Agents and Authorized Installation Contractors. All sales efforts are supervised from the company's headquarters in Hatfield, Pennsylvania, and are supported by our regional sales and support offices located in Hatfield, Pennsylvania; Nieuwegein, the Netherlands; Singapore and New Zealand. Please contact us at any of our locations with questions or comments.

EST Group, Inc. is dedicated to providing a complete range of lifecycle products and services for tubular heat exchangers, condensers, pipes, piping systems and pressure vessels. EST Group serves the power generation, refining, petrochemical, fine chemical and pharmaceutical industries worldwide. Additional entities include EST Field Services and EST Heat Exchanger, LLC.