We provide professional structural steel fabrication and erection services for commercial, industrial, and institutional projects. As experienced structural steel contractors, we deliver turnkey structural steel solutions for warehouses, commercial buildings, and custom structures.
Our integrated approach to steel fabrication and erection helps us meet project schedules, control quality, and improve coordination with our customers.
From fabrication to installation, we provide our customers with a single source for their structural steel needs. Our team approaches every project with a focus on accuracy, sequencing, and real-world jobsite conditions.

We pride ourselves on being the only partner you need, offering comprehensive services tailored to your project requirements.

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With our fully equipped fabrication shop, we can efficiently fabricate, weld, and coat parts for projects of all sizes – from structural steel beams to custom fabricated stairs.
Our fabricators are fully trained and we have strict quality control processes to make sure that parts are right when they leave or shop.

Our welders are GMAW (MIG) and SMAW (Stick) and flux core (FCAW) certified and we are AWS D1.1 compliant to meet your high standards and fulfill all job requirements.
From structural steel to stainless and aluminum, we offer comprehensive welding services to each one of our customers.

From warehouses and offices to mezzanines and stairs, we've got you covered with turnkey structural erection services! We're there for you as soon as the site is prepared.
Our dedicated installation teams are proficient in miscellaneous steel erection, rigging, welding and anchoring.


Our team of professionals provide FAST, FLEXIBLE, TURNKEY services for all your project needs.

Let us be your one-stop shop for design, fabrication, coating, and installation. Our experienced team will manage and execute your project from beginning to end, giving you full visibility into the timeline and every step of the process.
Need a last-minute design change, a different coating, or a quicker install? We're not perfect, but we react quickly when our customers' needs change because we know your project must be a success for us to earn your business on the next one!
Precision is our promise, and we excel at getting it right the first time. We aim for perfection in every project, exceeding expectations and earning your future work.

Based in Hayward, CA, we are a full-service metal fabrication shop serving the construction and industrial markets around the Bay Area and San Jose.
Our broad capabilities and top-notch staff allow us to be flexible enough to adapt to our customers’ changing needs in order to make every project a success. And our team of skilled professionals take pride in what they do and are committed to providing a high level of service to each of our customers.
We want to be true partners in every job we do – partners you can trust to do the job right the first time. Exceeding customer expectations is the cornerstone of our business.
With our fully-equipped fabrication shop in Hayward, including fabrication, welding, and coating equipment, we can efficiently fabricate solutions for projects of all sizes in Oakland, Fremont, San Leandro, Palo Alto and the surrounding area.
We are passionate about what we do and there is no one in the market who can offer a better solution. When you choose Top Line Welding Services, you’re not just choosing a supplier. You’re choosing a partner who is committed to your success.