STI/SPFA is a trade association representing fabricators of steel construction products and their suppliers. Member companies produce steel storage tanks, field erected water tanks, pressure vessels and heat exchangers, and pipe and pipelines. Their customers are from the petrochemical, power generation, food, pharmaceutical, fuels, wastewater and water transmission industries.STI/SPFA brings to its members the benefits of association with two internationally respected organizations in the steel fabrication industry – the Steel Tank Institute (1916) and the Steel Plate Fabricators Association (1933).  Since merging as STI/SPFA in February 2004, the association has continued to provide a wide range of services to industry-leading suppliers and fabricators of steel tanks, pressure vessels, specialty products and piping for the petroleum, chemical, food and water storage industries.