ABOUT AFFILIATES MATERIAL SELECTION VALUE-ADDED PROCESSES NEWS CAREERS CONTACT Value-Added Products Value-Added Products We offer progressive solutions for companies looking to acquire electrical steel cores. As we grow, we continue to invest in equipment and processes to provide value-added assemblies to help our customers increase their own productivity and reduce costs in their operations. Distributed Gap (DG) Cores We offer a variety of DG Core sizes and designs most commonly used in small to medium distribution transformers. Our process produced DG cores that increase efficiency while maintaining material costs due to our ability to enhance the magnetic characteristics by annealing. Cut Cores We produce cut cores by winding long strips of electrical steel on a mandrel to tight specifications. After a precision cutting process the core is split into two pieces. The individual cores take on a “C” shaped configuration with rectangular rounded corners. The two sections are polished at the interface and mated together in a process designed to minimize gaps between the two halves. The cores produced by this process save electrical energy due to low specific iron watt losses and are ideal for applications such as medium transformer sizes. Toroids Mapes & Sprowl Steel produces custom toroidal cores in a variety of sizes. With ID ranges from 1.00” to 20” and a max strip width of 6”, we can quickly manufacture your custom designed steel core. All of our toroid cores are annealed after winding for best magnetic properties and can be shipped as bare or epoxy coated. Taped & Assembled Shunts We utilize proven technology to produce shunts in a wide range of sizes and tolerance specifications. Materials available, slit in house, from widths of 0.60” to 21.0” in thicknesses from 0.004” to 0.025”. Elk Grove Village 1100 E Devon Ave Elk Grove Village, IL 60007 T: 847.364.0055 Credit Application ABOUT NEWS CAREERS CONTACT © 2021 Mapes and Sprowl

ABOUT AFFILIATES MATERIAL SELECTION VALUE-ADDED PROCESSES NEWS CAREERS CONTACT In the News UPG Enterprises LLC Acquires Lexington Steel Corp. UPG Welcomes Bob Ross as Vice President of Sales, Electrical Steel A Note to Our Customers Regarding COVID-19 UPG Enterprises LLC Acquires Metalex, LLC UPG Announces Expansion of Contractors Steel Union Partners I LLC Announces Major Rebrand To UPG Enterprises LLC Union Partners Acquires National Metalwares, L.P. Maksteel USA Completes Acquisition of LexWest Steel Union Partners Names Steve Letnich as COO of Contractors Steel LOAD MORE Elk Grove Village 1100 E Devon Ave Elk Grove Village, IL 60007 T: 847.364.0055 Credit Application ABOUT NEWS CAREERS CONTACT © 2021 Mapes and Sprowl