About Us

For over 85 years, Mapes & Sprowl has been the leader in improving quality and technology for the enameling and electrical steel industries.

Backed by metallurgical experts, and decades of collective steel mill experience, Mapes & Sprowl is sure to have an innovative solution to your current challenge. Along with these professionals, dedicated operators and support staff make up Mapes & Sprowl’s workforce. Our employee owners display unmatched commitment and pride in their work, and we’re sure you’ll notice the difference every day.

Special Services

Just-in-Time inventory programs
Pre-Processed Material Program insures shipment the same day we receive your order
Prototype and sample work
Chemical and physical laboratory testing
EDI (Electronic Data Interface)
Cost-Yield Analysis
Complete range of grades, thickness & widths of both electrical & enameling steel
Timely order fulfillment and speedy delivery
Metallurgical and technical experts on staff
Unequaled service
Fabrication expertise
Unmatched processing experience
Stress-free slitting
Small run capabilities
State of the art production facility

Quality Control

Mapes & Sprowl maintains strict Statistical Process Control (SPC) standards. The company is ISO 9001: 2008 certified.

Cutting Edge Technology

To make certain that Mapes & Sprowl maintains its position as technology leader for the industry, we maintain membership in the Porcelain Enamel Institute. Through this membership, we are among the first to learn of more efficient enameling procedures, new market opportunities, and we are able to improve our relationships with customers and vendors.


Mapes & Sprowl complies with the European Union RoHS directive.