Welcome to McMahon Steel Company, Inc., Southern California’s leading fabricator and erector of structural steel and miscellaneous iron.  Founded in 1970, McMahon Steel remains a family owned enterprise. We specialize in the detailing, fabrication and installation of structural and miscellaneous steel for commercial and industrial construction projects throughout the Southwest.  McMahon Steel is AISC and City of Los Angeles certified, and can take care of all your steel needs from the ground up.

HISTORY
McMahon Steel Company, Inc. was founded in 1970 by John J. McMahon, who emigrated from Dublin, Ireland to San Diego in 1968 where he originally found employment in the ship yards of San Diego. In 1970, he established C & B Steel, Inc., operating out of a small yard in National City. Later, in 1979, John developed a facility in Chula Vista, CA, where he progressed and developed the structural side of the business. The family owned company was renamed McMahon Steel Company, Inc. in 2000, when the firm’s operations were passed on to the second generation of family owners, including John’s two son’s Derek and Kevin McMahon. Over the past 42 years, McMahon Steel has served the greater Southwest region and have successfully completed over 1,200 projects in our company history.

MISSION / PHILOSOPHY
Our company mission is to build the highest quality steel structures while also providing the highest level of performance through on-time delivery and completion, competitive pricing, exceptional service, specialized knowledge, and industry-exceeding safety standards. Our company business philosophy is to provide bold vision, a “can-do” attitude, and excellence in all areas of endeavor, including:

• Quality of Work
• Customer Relationships
• Accountability
• Commitment to Deadlines
• Safety
• Environmental Responsibility

Services & Capabilities

McMahon Steel Company, Inc. is an experienced mid-sized fabricator and erector offering a wide range of services and capabilities, taking your project from the ground up. From Schools, to Hospitals, to Office Buildings, to Industrial Facilities, and any and all fabricated parts, we are here to cover all your steel fabrication needs, servicing the construction industry throughout Southern California.