CHI Engineering Service

430 West Rd
Portsmouth NH 03801

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Founded in 1978, CHI Engineering Services is a full-service procurement and construction company. It provides engineering and construction services to the Natural Gas and Liquid natural and petroleum gas industries. The company offers transmission pipeline design, permitting, network and pipe stress analysis, and chromatograph and odorant system installation solutions. CHI Engineering Services provides natural gas products, such as prefabricated gate and meter stations. Its clients include Berkshire Gas Company, Delta Gulf Corporation, Columbia Gas Transmission, Dominion Transmission, Fall River Gas Company, Granite State Gas Transmission Company and MidAmerican Energy. The company also offers pipeline design and construction management services.