Topline Welding provides structural steel installation and structural steel erection services for commercial and industrial projects. Our experienced team installs structural steel buildings, mezzanines, custom steel frameworks, and other fabricated steel systems with a focus on safety, precision, and efficiency. If you need a reliable, professional team for rigging, welding, assembly, or anchoring, we’ve got you covered!

We provide erection services for a wide range of projects, for both structural and non-structural applications. We routinely install fabricated steel components for:
With our fully-equipped fabrication shop in California and a team of highly skilled fabricators and welders, there’s almost no job that we can’t handle. Whether you need a single custom spiral staircase or industrial stairs for a mezzanine, we have the capacity and the expertise to get you a quality product at a competitive price.


As structural steel contractors with hands-on field experience, we understand the importance of schedule, safety, and coordination. Our structural erection services are designed to support efficient construction sequencing while maintaining high standards of workmanship and site safety.
Whether erecting an entire warehouse or installing a set of stairs within an industrial facility, we strive to deliver high quality erection services that support the unique needs of our customers.
We provide structural erection services for commercial, industrial, and infrastructure projects. Our scope includes the erection of structural steel frames, columns, beams, joists, and related components in accordance with project drawings and specifications.
Steel erection is commonly required for commercial buildings, warehouses, industrial facilities, mezzanines, stair towers, platforms, and other structural steel systems where accurate placement and sequencing are critical.
Yes. We regularly perform structural erection for steel fabricated by other shops. We review drawings and steel packages in advance to ensure proper coordination, sequencing, and efficient field installation.
Our structural erection crews use cranes, lifts, rigging, and specialized tools appropriate for steel erection work. Equipment selection is based on project size, site conditions, and structural requirements.
Yes. As experienced structural steel contractors, we coordinate closely with general contractors, fabricators, engineers, and other trades to maintain schedule, address field conditions, and support smooth project execution.
Yes. When required, we can provide both steel fabrication and structural erection, allowing for single-source responsibility and reduced coordination throughout the project lifecycle.
To request a quote, submit your project drawings, steel tonnage, site information, and schedule requirements. Our team will review the scope and provide a clear estimate for your structural erection needs.