Pipe Welding, Fitting & Fabrication

Rigid Welding specializes in the fabrication and assembly of high-pressure piping, process piping spools, vessels, and full skids. We offer comprehensive pipe welding services with the ability to weld in all positions using the most advanced equipment. Our elite team of welders is certified to ASME standards.
Rigid Welding Inc. is certified in accordance with:
  • CSA B52 Mechanical Refrigeration Code and CSA-B51 Boiler Pressure Vessel & Pressure Piping Codes
  • ASME B31.1 Power Piping Code
  • ASME B31.3 Process Piping Code
  • ASME B31.5 Refrigeration Piping Code

Specialist Piping

We have a variety of specialist piping services for a multitude of systems.


Our specialist piping services for a variety of systems include:

  • Constructing, modifying, repairing, and removing piping systems
  • Stainless steel piping, tubing, and food-grade sanitary piping
  • Hydraulic and pneumatic piping and controls, installations, and troubleshooting
  • Prefabricated pipe assemblies including pressure piping spool fabrication and assembly and skid modular fabrication and assembly
  • High-pressure piping systems
  • Jacketed piping and compressed air lines

Installation and modification of systems equipment, including valves, compressors, pumps, grinders, augers, and more!


We also offer the following piping services:

  • Materials procurement and supply
  • Manual and control valve selection
  • Preventative maintenance
  • Non-destructive testing and examinations
  • TSSA piping registrations and certification
  • Heat treating

Process Piping

We offer a full range of process piping services and specialize in the safe installation, testing, and repair of sanitary and high-purity piping systems that move any type of liquids or gasses in accordance with ASME B31.1 Power Piping Code and B31.3.

Our process piping services include:
  • Industrial facilities
  • Chemical processing facilities
  • Cryogenic plants
  • Pharmaceutical
  • Breweries
  • Water/Wastewater treatment plants
  • Oil Refineries
  • Paper mills

Prefabricated Piping, Modules and Skids

We fabricate complete piping skids – from base to entire piping schematic – using either bolted or welded connections. We apply our design and engineering expertise to guarantee maximum operating efficiency. Our professional engineers work closely with the fabrication team to ensure a quality product.

The Rigid Welding elite team of welders is ASME accredited and routinely performs work to B31.1, B31.3 and B31.5.

We service many types of modular systems, such as:

  • Prefabricated Pipes (Spools)
  • Fixture Assemblies
  • Modular Pipe Rack Assemblies
  • Equipment Skid Modules
  • Process Skid Fabrication

Mechanical Piping

Rigid Welding offers quality mechanical piping services. We can offer full services including project management, fabrication, and installation. We specialize in the design and fabrication of turnkey mechanical piping systems in accordance with ASME B31.1, B31.3 and B31.5.

Medical Gas Piping


Rigid Welding’s engineers, welders, and designers are experienced in medical gas piping fabrication and installation. We are certified by the TSSA to fabricate and install medical piping in accordance with CSA B51 and CSA-Z7396.1.  


We offer services for piping built to handle various medical gases including:

  • Medical compressed air
  • Instrument air
  • Compressed air for labs
  • Cryogenic liquids
  • Compassed air for dental settings
  • Oxygen
  • Carbon dioxide,
  • Nitrous oxide
  • Nitrogen
  • Medical Surgical vacuum
  • Laboratory vacuum
  • Dental vacuum