Fremont’s Trusted Welding Contractor for Structural Steel, Handrails, and Stair Repairs

Precision Welding Solutions for Safer, Code-Compliant Buildings in the Bay Area.
If you manage or build commercial or multifamily properties, you know how important it is to work with contractors who deliver reliable, code-compliant, and on-time results. At Top Line Welding Services Inc., we help you get there with professional structural welding, handrail and guardrail installation, and steel stair fabrication and repair — all delivered with the precision your projects require.

Based in Fremont, California, we proudly serve the entire Bay Area, offering both in-shop and mobile welding services tailored to your specific needs. Whether you’re reinforcing a stair system, installing safety railings, or retrofitting steel framing, we provide durable metalwork that holds up to use, time, and inspection.

Our Core Services for Contractors and Property Owners
Structural Steel Welding
We fabricate and install beams, columns, plates, supports, and custom brackets per structural plans. All welding is performed by licensed C-51 professionals to meet or exceed California Building Code requirements.
Handrail & Guardrail Installation
From ADA-compliant handrails for staircases and ramps to custom guardrails for balconies and walkways, we deliver safe, sturdy, and visually clean solutions in stainless, galvanized, or powder-coated finishes.
Metal Stair Repair & Fabrication
We restore or replace steel staircases, including stringers, treads, risers, and supporting frames — ideal for apartment buildings, warehouses, and public access areas.
Mobile Welding Services Across Fremont & the Bay Area
Our mobile welding team travels to job sites in Fremont, Hayward, Union City, San Jose, and Oakland, providing fast turnaround for urgent or on-site welding needs.
 
Why Top Line Welding is the Right Partner for Your Next Project
We’re not just welders — we’re problem solvers. We help contractors and property managers meet deadlines, pass inspections, and deliver quality work. With over a decade of experience, we bring:

Responsive communication and professional crews
OSHA-compliant jobsite safety practices
Flexible scheduling and mobile capability
High-quality materials and clean workmanship
Detailed proposals and fast estimates