Pennsylvania Machine Works, headquartered in Aston, Penn., is a manufacturer of forged outlet connections, swages, nipples, and forged fittings used in the plumbing and piping industries. Founded in 1931, the company has three distinct divisions: PennMachine in Aston; PennTexas in Houston; and U.S. Drop Forge in Swedesboro, N.J. The company produces forged pressure fittings made of copper, nickel, carbon, stainless and other elements at each of its locations. The fittings are 1/8' through 6' and the branch outlet connections are 1/8' through 72.' It also has a quality assurance department that uses testing procedures so fittings meet the specification required. Penn Machine Works is active in a range of industry associations, including: American Society for Testing and Materials; American Society of Mechanical Engineers; American National Standards Institute; National Standards System; American Society for Metals; American Society for Quality; National Association of Corrosion Engineers; Pipe Fabricators Institute; Pipe, valve and Fitting Roundtable; American Weldiing Society; and Manufacturers Standardization Society.