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Established in 2018, Keystone Steel Fabricators, Inc. traces its roots back to 1989 when co-founder John Bonacci began Keystone Steel Erectors, Inc. Keystone Steel Fabricators, Inc. ownership brings more than 60 years of combined experience in steel fabrication, engineering, detailing, estimating, erecting, and project management to the industry and strives to use that experienced skillset to deliver quality and thorough service promptly and safely. At Keystone Steel Fabricators, Inc., it’s all about the client’s satisfaction in a project’s success. Coupling methods and resources such as value engineering, AISC Certified Erectors, and AWS Certified Welders focusing on safety, quality, and timeliness, every step Keystone Steel Fabricators take exceed client expectations no matter the size of the project.


John Bonacci

Principal Co-Founder

Over 30 years of fabrication, erection, and project management experience. 


Nicholas Reuther, Sr., PE

Principal Co-Founder

A licensed PE in the state of Pennsylvania with 30 years of engineering and estimating experience. 

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