General Sheet Metal & Mechanical (GSM) provides sheet metal design, fabrication, and installation services in Maryland and Washington, D.C. The company is woman-owned and says it serves construction, government, aerospace, and commercial industries, with fabrication work that includes duct products and custom equipment.
Woman-Owned Business
Registration
De Perini Metal Fabricators, IncWoman-owned since 2000, De Perini Metal Fabricators is a Maryland manufacturer with roots stretching back to its 1960 founding by Jack K. De Perini. From its Gaithersburg plant, the company produces precision sheet-metal and machined parts for military, government and commercial customers, handling both prototypes and production work.GAITHERSBURG, MD
CMC Sheet MetalSince 1974, CMC Sheet Metal has grown into a longstanding Capitol Heights contractor serving the Washington, D.C., area with sheet metal fabrication and installation. Its 45,000-square-foot facility supports HVAC construction work for major government, institutional and commercial projects, while a safety program recognized by the National Safety Council reflects the company’s distinctive workplace culture.CAPITOL HEIGHTS, MD
K & I Sheet Metal, IncFounded in Pittsburgh in 1982 by husband-and-wife team Kenneth and Irene Kotchey, K & I Sheet Metal, Inc. is a woman-owned sheet-metal fabrication and mechanical contractor. It fabricates custom components in-house at its 22,000-square-foot manufacturing and office facility, and provides HVAC and mechanical-system design and installation through its own staff and field crews.PITTSBURGH, PA
Blackstone Advanced TechnologiesBlackstone Advanced Technologies is a woman-owned U.S. manufacturer known for keeping custom sheet-metal work under one roof. From its Jamestown facility, the company helps customers turn specialized designs into finished products for applications ranging from rail equipment to military lockers, with ISO 9001:2015 certification supporting its quality system.JAMESTOWN, NY