Founded as a welding company in 1948, CGI International Corporation has grown into a third-generation Zullo family business that manufactures and distributes hydrogen, carbon dioxide, and other industrial and residential gases. Based in Washington, Pennsylvania, it operates as one of the largest independent gas suppliers in the Northeast and Mid-Atlantic, with distribution reaching 18 states. CGI also launched the first privately held hydrogen production facility in the United States during the 1980s and remains closely tied to emerging low-carbon energy markets.
Keen Compressed Gas CoKeen Compressed Gas Co. supplies welding equipment and industrial and medical gases, with on-site dry ice production and related rental, repair, and delivery support. Founded in Wilmington as Keen Auto Parts in 1919, the family-owned company began selling acetylene and oxygen in 1928 and now operates 13 Mid-Atlantic locations with more than 140 employees. Its automated fill plant received ISO accreditation in 2019, the company’s centennial year.NEW CASTLE, DE
Greco Gas IncServing Western Pennsylvania since 1941, Greco Gas is a regional supplier known for pairing local welding-industry service with in-house gas production. Its Tarentum headquarters supplies manufacturers, fabricators, and welders through a packaged-gas filling plant and specialty gas laboratory, with additional branches in Butler and Kittanning.423840TARENTUM, PA
AirgasFounded in 1982 from the acquisition of Connecticut Oxygen, Airgas supplies industrial, medical and specialty gases along with welding, safety and related products to customers across the United States. Now an Air Liquide company, it combines a national distribution network of more than 1,400 locations with regional service, supporting more than one million customers and over 18,000 associates. Airgas also brings specialized expertise to metal fabricators through welding-efficiency programs and OEM-certified mechanized-cutting service.RADNOR, PA
American Welding & GasTracing its roots to two gas suppliers founded in 1949, family- and teammate-owned American Welding & Gas manufactures and distributes gases and welding supplies from its Raleigh, North Carolina headquarters. More than 800 employees support customers across over 30 states and Canada through a network of more than 100 retail locations, over 20 fill plants, and a fleet exceeding 250 vehicles. AWG also designs custom bulk-gas systems and builds robotic and hard-automation cells for welding and cutting applications.RALEIGH, NC