Columbia Steel has been fabricating and erecting structural steel and miscellaneous metals for more than 30 years. The company does projects on schools, office buildings, hospitals, parking structures, movie theaters and retail stores. Columbia Steel performs projects in California, Arizona and Nevada. Its production capability is able to process 1,400 tons of medium and lightweight steel each month. Based in Rialto, Calif., Columbia Steel maintains a 14.5-acre lot, including an under-roof, 65,000-square-foot fabrication area. Columbia Steel is an employee-owned company.