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Structural Steel Fabrication & Erection

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.

Full Service Structural Steel Contractors

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.

Our Shop & Equipment

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.

Turnkey Services

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

Custom Manufacturing Solution

Metal Fabrication

Full-service metal fabrication shop providing cutting, welding, forming, and custom fabrication.

Welding

Professional structural welding services for commercial and industrial applications.

Erection

Structural erection services for commercial and industrial projects.

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Metal Fabrication

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.

Welding

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.

Structural Erection

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.

Steel Erection For Buildings, Mezzanines, & Custom Structures

We provide steel erection services for a wide range of projects, for both structural and non-structural applications. We routinely install fabricated steel components for:

Industrial

Commercial

Recent Structural Steel Fabrication & Installation Projects

Why Work With Us

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

Turnkey Services

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.

Flexible Solutions

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!

Uncompromised Quality

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.

Steel Fabrication FAQs

We provide a full range of steel fabrication services, including cutting, welding, forming, assembly, and finishing. Our shop supports fabrication of custom steel structures as well as structural steel for buildings and warehouses.
We specialize in steel fabrication for structural, miscellaneous, and industrial applications. This includes beams, columns, frames, brackets, platforms, stairs, railings, and other custom steel structures.
Yes. As a full-service structural steel fabrication shop, we provide both fabrication and structural erection services. We manage projects from start to finish, reducing coordination effort and simplifying execution for our customers.
Absolutely. We regularly fabricate custom steel components based on customer drawings, specifications, or design concepts. Our steel fabrication capabilities allow us to meet unique project requirements and maintain tight tolerances.
Yes. We provide both in-shop and on-site welding as part of our steel fabrication and erection services. All welding is performed by experienced, AWS-certified welders in accordance with approved procedures and project requirements.
We fabricate a variety of steel types depending on project needs, including carbon steel, stainless steel, and other steel alloys. Material selection is based on application, environment, and project specifications.
Quality is maintained through experienced staff, in-process inspections, dimensional verification, and final review prior to delivery or installation. Our goal is to produce steel components that fit correctly and perform reliably in the field.
Turnaround time varies based on project size, complexity, and material availability. During the estimating process, we provide realistic lead times so customers can plan their schedules with confidence.

About Us

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.

Get a Call from Our Team

Have a project you’d like us to quote? We’ll have one of our industry pros give you a call to talk through your project and how we can help.