Our Affiliates

We belong to UPG’s family of brands

UPG Enterprises LLC (UPG) is comprised of a portfolio of companies that offer the best-in-class steel processing and production capabilities. Mapes & Sprowl Steel is just one member of UPG’s family of brands. Together, with our affiliate companies, we embody our motto of being “STRONGER TOGETHER.”

A one-stop-shop for all your structural steel products and first step processing needs

Contractors Steel Co

High volume service center focused on slitting, blanking and toll processing stainless steel, aluminum and carbon steel


Specialists in processing and slitting enameling steel, silicon electrical steel, Agion® antimicrobial treated steel, and electrical steel cores

A leader in toll processing all your metal needs and specializing in tension leveling

Chicago Steel

High-volume manufacturer, fabricator and finisher of welded steel tubing and tubular components

National Metalwares

Manufacturer and supplier of expanded metal, perforated metal, perforated tubes and filtration components


Manufacturer of electrical steel laminations and complete rotor and stator cores for electric motors and generators.

UPG Electrical

The industry leader in safety grating including Open Grip®, Deck Span®, and Tread-Grip®

Morton Rail Products