Certified large diameter pipeline weldingWelding all types and grades of carbon steel, stainless steel, aluminum, and more

Technical expertise and skilled craftsmanship

Large Diameter Pipeline Specialist

Field welding of large diameter pipeline presents special challenges related to the immense weights and forces involved. Sinse 1975, Dean's Certified Welding has developed a reputation for delivering the highest quality onsite welding services that meet these unique requirements on major water projects throughout the United States.

If high quality workmanship, dependability, and professionalism are important to you, contact Dean's Certified Welding for a competitive bid on all of your next pipeline projects.

California Class-A engineering contractor license

  • Field welding of large diameter pipe is our primary focus.
  • Our technical expertise and skilled craftsmanship have been proven for more than 30 years.
  • We're experts at welding all types and grades of carbon steel, stainless steel, aluminum, and more.
  • Our welders are AWS and ASME certified for SMAW, and GTAW, FCAW, and other special welding processes.
  • We regularly comply with special requirements by engineering and construction firms and local regulatory agencies.
  • All welds are field tested according to national standards, governing welding codes, and job specifications.
  • We can support major projects anywhere in the United States, and are licensed in several states.
  • We are bonded, and have a California Class-A engineering contractor license.
  • Reliable and easy to work with.
  • Member of the Boilermakers Union Local 92.

United States, Northern to Southern California certified pipeline welding

Engineering, construction, local regulatory agencies Certified welding workmanship, dependability, and professionalism Quality onsite certified welding services Certified welding national standards, governing welding codes, and job specifications
Diamond Valley Reservoir
Largest earth and rock reservoir in the United States

16-foot diameter pipeline carrying about 1,000 ft of water per second
Inland Feeder South
Main water artery line within Southern California

7 miles of 12-foot diameter pipe
Central California Aqueduct Pipeline
Primary water feed from northern to Southern California

100 miles of large diameter pipeline
Otay Pipeline
8 mile freshwater pipeline

Serving 2.4 million residents living in San Diego County