Who We Are
Serrmi is a family-founded, U.S.-based manufacturer specializing in rail infrastructure, custom steel fabrication, and OEM steel solutions. Based in Pittsburg, Kansas, we deliver high-quality, U.S.-made products built to AREMA, AASHTO, and Buy America standards. Our expertise extends beyond rail to support data center, power, transit, industrial, and infrastructure projects nationwide. Guided by innovation, precision, and a strong family culture, Serrmi is committed to building lasting partnerships through trust, responsiveness, and reliable execution.
Why Choose Serrmi
End to End
Manufacturing
With engineering, fabrication, machining, forming, finishing, and assembly under one roof, Serrmi maintains greater control over quality, consistency, and delivery.
Custom Fabrication
Serrmi transforms complex designs and demanding specifications into precision-built steel products engineered for reliable performance and repeatable quality.
U.S.-Based Operations
With manufacturing operations in Kansas, Serrmi delivers dependable, U.S.-made products built to meet demanding project requirements and industry standards.
Dependable Execution
Our reputation is built on dependable, on schedule delivery, even for large and highly complex projects. Customers trust us to meet demanding timelines while maintaining the highest standards of quality and support.
Explore Our Product Range
Client Testimonials
“Our positive experience with Serrmi dates back to our time owning and operating Pioneer Lines and has continued through our work with Phoenix Rail. Their manufacturing team has consistently been responsive, dependable, and committed to providing high quality products that meet the needs of the railroad industry. We value our longstanding partnership with Serrmi and appreciate their focus on quality, service, and customer support.”
Todd Marklin
SVP
Phoenix Rail
“Serrmi manufacturing products are an important part of Patriot Rail’s Signal Department. Operating railroads across the United States requires products that combine reliable performance with durability to withstand any environment, and Serrmi delivers both. From product customization to precise construction, Serrmi provides solutions that support the needs of our operations.”
David Metts
Director Public Projects and Signals
Patriot Rail
Our Capabilities
Powered by Partnership
BUILDING THE FUTURE
OF INFRASTRUCTURE
From rail foundations to modular data systems, Serrmi delivers custom steel fabrication that powers the nation’s rail, energy, and technology networks. Every product is engineered for strength, precision, and lasting performance.
Core Values
Craftsmanship
Every product reflects the skill and pride of our team. Precision, consistency, and attention to detail define how we build.
Partnership
We treat every client like part of the team, building long-term relationships based on trust and accountability.
Innovation
We constantly look ahead - developing new designs, methods, and solutions that push infrastructure forward.