Stamped Fittings LLC is a family-owned and operated manufacturer of HVAC spiral pipe components, founded in 1997. It grew from a 4,000-square-foot facility and three-person staff to a 115,000-square-foot manufacturing and distribution facility with 45 employees. Its union-made products serve the spiral-pipe industry, with accounts across the USA, Canada, and Puerto Rico.
Hranec CorpFounded by Steve Hranec in 1995, Uniontown-based Hranec Corp. combines mechanical construction services with large-scale HVAC manufacturing, including custom ductwork and roof products. Its manufacturing operation has expanded from a 2008 fabrication facility to a 40,000-square-foot roof-product shop and a 200,000-square-foot building completed in 2026. Hranec also stands apart with specialized offerings such as outdoor Tuff Duct and its patented Spiral Graphix, which turns exposed spiral ductwork into customized visual displays.UNIONTOWN, PA
Lukjan Metal ProductsLukjan Metal Products is a family-owned and operated manufacturer of sheet metal products for the wholesale HVAC industry, founded in Conneaut, Ohio, in 1964. Under the leadership of the founders’ son and daughter, it has expanded to four facilities in Ohio, North Carolina, Wisconsin, and Nebraska, with its named facilities collectively providing more than 700,000 square feet of manufacturing capacity. The company is particularly known for prefabricated sheet metal fittings and serves HVAC distributors across regional markets.CONNEAUT, OH
SSP Fittings CorpFor a century, SSP Fittings Corp has manufactured fittings and valves from its single, vertically integrated U.S. operation in Twinsburg, Ohio. The third-generation family-owned company employs 200 associates and makes 100% Made-in-the-USA products, including specialized Alloy 400/405 and C-276 components, for demanding systems across industries such as aerospace and chemical processing.TWINSBURG, OH