Gretna Machine Shop is an ISO-certified, women- and minority-owned lean manufacturing facility located in the heart of Houston’s industrial corridor. Since 1980, Gretna has offered its customers outstanding service and quality work in precision components for the oil and gas industry and beyond. With the capability to serve the energy, aerospace and government sectors, Gretna prides itself on being the machine shop of choice for a number of multinational and Fortune 500 companies.