High-Pressure Pipeline Welding

From the mountains of Prescott Valley to the streets of Glendale, high-pressure pipelines are critical to keeping Arizona fueled, cooled, and connected. Earthquake Welding delivers code-compliant, pressure-rated welds built for the demands of gas, petroleum, and utility systems.

These aren’t lightweight jobs. We handle transmission mains, regulator stations, valve tie-ins, live gas connections, and more—always meeting API 1104 and ASME B31.8 standards. Whether it’s a line upgrade in the desert or a new run through a metro right-of-way, our welds are built for pressure, tested for integrity, and delivered on schedule.

-Transmission line tie-ins

-Distribution

-Valve station welds

-Midline upgrades

-Vault or station outlet welding

-Section replacements

-Hot tap prep welds

-New line installation