sps companies service centers are strategically located throughout the midwest to service our customers' needs. on-time delivery and our unmatched size and depth of inventories are two major factors that separate us from our competition. now extended throughout the midwest, our services include four full-service warehouses; cut-to-length flat roll and temper operations; a tube and pipe manufacturing facility at exltube; galvanized distribution with tubularusa; and two comprehensive processing facilities.