Certified RNG distribution pipeline welding

As renewable natural gas (RNG) expands across Arizona, new distribution pipelines need welds that are built to last and certified to code. Earthquake Welding provides certified welding services for RNG distribution pipelines, ensuring every joint meets the demands of pressure, safety, and regulatory compliance.

We weld carbon steel, stainless, and HDPE pipeline systems, following API 1104, ASME B31.8, and any utility-specific requirements. Whether it’s steel mains feeding into the Phoenix metro grid or poly lines running through Pinal and Maricopa Counties, we’re equipped to handle the welding scope from start to tie-in.

Every weld is qualified, traceable, and ready for inspection—because RNG infrastructure requires the same precision and integrity as any transmission system.

Certified crews. Built for RNG. Ready for the grid.

Capabilities

High-pressure pipeline welding
API 1104 certified welding
Boiler room pipe welding
Pipe welding for utility rooms
ASME B31.3 and B31.8 welding
Piping system upgrades and retrofits
Stainless steel pipe welding
Metal Fabrication
Carbon steel pipe welding
Utility gas line tie-ins
Alloy pipe welding
Live gas line welding
On-site pipe welding service
Regulator station piping
Pipe spool fabrication
Utility Gas
Pipe welding for shutdowns/outages
Cathodic protection welds (anode connection)
Corrosion repair welding
Gas pipe rerouting and upgrades
Pipe section replacements
Ethanol and biofuel line welding
Pipe welding for compressor stations
Certified RNG distribution pipeline welding
RNG facility piping and pressure testing
Commercial HDPE gas line welding
RNG-ready utility tie-in welds
Polyurethane gas line installation
RNG pipeline tie-in welding
Poly gas line welding/fusing for RNG facilities
Mobile pipe welding and repair
Petroleum pipeline welding
RNG utility gas upgrades and service connections
Meter and regulator assemblies for RNG systems
RNG gas line installation and fusion welding
Fuel terminal pipe welding
Natural gas line installation
Loading rack piping and welding
Natural gas line repair
Aviation fuel system welding
Emergency pipe welding
Pipe welding for gas lines
Tank farm piping systems
HVAC chiller line welding
Diesel line welding and repair
Mechanical room pipe welding
Welding for chiller piping systems