Description Advex Corporation located in Hampton, Virginia, established in 1969, is a manufacturing company that supports the defense industry. Advex is one of the premier metal fabricator companies on the East Coast. We specialize in machining, fabrication and welding of Aircraft Carrier and Submarine components. For over 53 years, Advex has grown into an organization that can provide not only PRECISION MACHINING and FABRICATION, but also NONDESTRUCTIVE TESTING and MARINE AND INDUSTRIAL SERVICES.