In operation for more than 100 years, United States Steel Corporation is one of the leading companies that manufactures and produces steel in the United States. It manufactures a range of steel sheet and tubular products. The company maintains a logistics services department that offers metal transportation and distribution services. United States Steel Corporation also provides a variety of transportation and operations management, packaging, loading and logistics planning solutions. It serves the automotive, appliance, container, industrial machinery, construction, and oil and gas industries. The company maintains several production and distribution centers. United States Steel Corporation has received an ISO 9001 certification from the International Organization for Standardization. The company maintains a staff of more than 49,000 employees.