CSI is the joint venture of the two of the largest steel companies in the world: NUCOR CORPORATION and JFE STEEL

We are the only West Coast steel supplier backed by the strength and reliability of U.S. based Nucor Corporation, and the innovative success of manufacturing leader, JFE Steel in Japan, producing five different product lines. In most of our product groups, we have the broadest production capabilities west of the Rocky Mountains. Our success in this competitive arena is proven by our ability to continue to increase sales and production year after year.