Founded in 1990 by Gerard and Barbara Colvin, American Alloy Fabricators grew from a 3,000-square-foot startup into a specialty manufacturer known for personal service and custom work in demanding process industries. The Norristown company builds ASME-certified pressure vessels for pharmaceutical, biotechnology, chemical and food-processing customers, with certified welders and experience handling both stainless steel and specialty alloys.
ASME Section VIII, Division 1
certification
American Boiler, Tank & Welding Co IncFounded by Leo Farley in 1936, Albany’s American Boiler, Tank & Welding Co. fabricates custom pressure vessels, tanks and other heavy industrial equipment, with field repair and installation available as well. The company’s unusually broad project history includes a cargo offload sled built for National Science Foundation work in Greenland, alongside demanding work for utilities, defense and process industries. American Boiler holds ASME U, R, S and H stamps and has maintained NYS Department of Labor OSHA & SHARP certificates since 1998.ALBANY, NY
Sistersville Tank Works IncFounded in Sistersville in 1894 during the Mid-Ohio Valley’s oil boom, Sistersville Tank Works builds custom ASME pressure vessels, heat exchangers, tanks and other heavy fabricated equipment. The woman-owned company is now led by the third generation of the Morgan family and serves industrial customers across the United States and overseas. Its Ohio River plant combines large-scale fabrication with in-house engineering, testing and field repair capabilities.SISTERSVILLE, WV
Eagle StainlessSince 1990, Eagle Stainless has fabricated sanitary stainless steel containers, bottles, and pressure vessels for pharmaceutical and biotechnology production, including custom-engineered equipment for projects ranging from clinical-scale work to commercial manufacturing. Based in Warminster, the company maintains a design library of hundreds of custom products and patented innovations, and its 316L vessels are used by more than 2,000 pharmaceutical and biotech companies worldwide. Eagle Stainless holds ISO 9001:2015 certification and ASME “UM” authorization for pressure vessels.WARMINSTER, PA
Didion Vessel, LLCFounded by Don and Jill Didion in 1977, Didion Vessel is a family-owned Bellevue, Ohio manufacturer of custom ASME pressure vessels, industrial autoclaves, and gas separators. The company grew from local welding and millwright work into code fabrication, earning its ASME stamps in 1989 and later certifying more than 3,100 vessels. Its experience with rigging and in-house fabrication also allows Didion to tackle unusually large, heavy custom units, including vessels built in its yard when they exceed shop dimensions.BELLEVUE, OH