Pittsburgh-headquartered U.S. Steel has closed on the purchase of POSCO-California Corp.’s 50 percent partnership interest in USS-POSCO Industries. After a long, collaborative relationship, U.S. Steel and POSCAL concluded that ownership of UPI by a single group represents the best opportunity for UPI to continue operating effectively and serve its customers.

The partners have been working together to ensure a smooth, constructive transition. In the near term, U.S. Steel plans to operate UPI as a separate entity.

UPI, headquartered in Pittsburg, California, markets sheet and tin mill products, principally in the western United States. UPI produces cold-rolled sheets, galvanized sheets and tin mill products made from hot bands principally provided by U.S. Steel. UPI’s annual production capability is approximately 1.5 million tons.