Certified Pipe Welding Services in the Bay Area

Top Line Welding Services, Inc. provides certified pipe welding services for industrial, commercial, and infrastructure projects across the Bay Area. Our welders are qualified in multiple welding processes and pipe positions, ensuring code-compliant work on pressurized systems, gas lines, water mains, steam systems, and structural piping.

We work with carbon steel, stainless, and specialty alloys — delivering precision welds that meet industry standards and pass inspection.

 

“Certified pipe welding isn’t just about joining metal — it’s about trust, safety, and performance. Every weld we complete is backed by experience, precision, and a commitment to meet or exceed code. Whether it’s high-pressure steam, water lines, or custom pipe systems, our goal is to deliver clean, strong welds that pass inspection and stand the test of time.”

 

Jorge Cisneros, CEO & Founder.

 

What We Weld – Service Capabilities

* High-pressure gas and steam pipe welding

Certified welding for systems operating under extreme pressure and temperature, following all safety and inspection standards.

Carbon steel and stainless steel piping

Precision welding of common and specialty materials for long-lasting, corrosion-resistant performance.

Welded water lines and underground piping

Installation and repair of welded pipe systems for potable, utility, and industrial water distribution.

Flange welding and pipe spool assemblies

Fabrication and welding of flanged connections and custom spool sections for fast, modular installation.

Structural and process piping

Pipe welding for support systems and industrial process lines in facilities, plants, and commercial buildings.

Pipe-to-plate and pipe rack welding

Secure integration of piping into structural frames and racks — built for stability and load-bearing support.

On-site or in-shop certified welding options

Flexibility to complete jobs at your location or in our controlled shop environment, depending on project needs.

X-ray and code-compliant welds

Welds performed to pass nondestructive testing (NDT), meet inspection criteria, and comply with code requirements.

Emergency pipe repairs and shutdown support

Fast-response certified welding to repair critical lines and support shutdown or outage timelines.

Certified Pipe Welding Capabilities


At Top Line Welding Services, Inc., our certified welders are trained and qualified to deliver precision pipe welding that meets industry codes and inspection standards. We bring safety, strength, and compliance to every project — in the field or in the shop.

 

  • ASME & AWS Certified Welders

    Work is performed by professionals certified under nationally recognized welding codes, ensuring every weld meets strict standards.

  • 6G & All-Position Qualified

    Our welders are trained to perform complex pipe welds in any position — overhead, vertical, or horizontal — for total jobsite flexibility.

  • TIG, MIG, and Stick Welding

    We apply the right process based on your pipe material and conditions — from stainless TIG welds to heavy-duty Stick work.

  •  X-Ray and Code-Approved Welds

    Welds are performed to pass NDT (X-ray or ultrasonic) and meet the requirements of project inspectors and quality control protocols.

  •  High-Pressure & Steam Line Experts

    We specialize in pipe welding for gas, steam, and fluid systems under pressure — including new installs and shutdown repairs.

  • In-Shop or On-Site Execution

    Whether your project calls for field welding or shop fabrication, we deliver consistent, certified results every time.

Industries We Serve with Certified Pipe Welding

Our welders support mechanical system installations with certified pipe-to-pipe and pipe-to-plate welds for HVAC, steam, and water line projects.
Certified pipe welding for general contractor project in the Bay Area, supporting structural and utility installations

General Contractors

We provide structural and pressurized pipe welding for commercial and public works projects — helping GC teams stay on schedule and pass inspections.

ertified pipe welder connecting HVAC and plumbing lines for commercial mechanical contractor project

Mechanical & Plumbing Contractors

We were commissioned by a manufacturing plant to repair several pieces of critical industrial equipment. Our expert welders performed on-site assessments and executed intricate welding repair techniques, ensuring minimal downtime and restoring the machinery to optimal working conditions with enhanced durability.
On-site pipe welding for industrial facility process line during equipment upgrade in the Bay Area

Industrial & Manufacturing Facilities

Certified pipe welding for process lines, utility piping, and equipment upgrades — performed during outages, shutdowns, or active operations.

Certified welding of high-pressure water line for city utility project, performed under public works compliance standards

Municipalities & Utility Districts

Trusted by public agencies for high-pressure water lines, gas mains, and steam system welds — including urgent repairs and capital improvement work.

Pipe-to-frame welding for structural steel integration in commercial building project

Steel Fabricators & Structural Subcontractors

We deliver precision pipe welding for frames, hangers, supports, and integrated piping systems in structural steel builds.

Mobile pipe welding for heavy equipment maintenance at construction yard in Northern California

Heavy Equipment & Maintenance Crews

We perform mobile pipe welding on equipment yards, work trucks, and jobsite systems that need fast, field-ready pipe reinforcement or repair.

Certified Work. Clean Welds. Built to Code.


Our pipe welding services are trusted by contractors, facility managers, and municipal clients across the Bay Area. Whether you’re dealing with a new build, retrofitting old systems, or responding to an emergency — our certified welders deliver safe, strong, inspection-ready welds that hold up under pressure.