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 a comprehensive pipe welding service, with the ability to weld in all positions using the latest equipment. We have a team of qualified and experienced welders certified to ASME standards.

Specialist Piping

We offer piping services for a variety of systems which 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 trouble shooting Boiler and pressure vessel installation/repairs
  • Prefabricated pipe assemblies – pressure piping spool fabrication and assembly, Skid modular fabrication and assembly
  • High-Pressure piping systems
  • Process piping
  • Jacketed piping, compressed air lines
  • Medical gas piping, including oxygen gas pipe line systems
  • Installation and modification of systems equipment, including valves, compressors, pumps, grinders, augers and more.

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

Prefabricated Piping, Modules and Skids

We fabricate complete piping skids – from the bases to the entire piping schematic – featuring both bolted or welded connections. Our design and engineering expertise allow us to successfully evaluate your design and suggest ways to minimize your package’s size to improve it’s operating efficiency. This initial phase allows our engineers to work closely with our fabrication team to ensure a quality product is delivered.

We are ASME accredited and routinely perform work to B31.1, B31.3 and B31.5. Prefab piping is just one aspect of our work as we integrate and link multiple skills and disciplines into the construction of modules and skids.

Types of Modular Systems

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

Mechanical Piping

Rigid Welding offers quality mechanical piping service in the project management, fabrication and instillation of the steam and process pipe work. 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 is fully certified by the TSSA to fabricate and install medical piping in accordance with CSA B51 and CSA-Z7396.1.


Medical gas piping designed and installed by Rigid Welding will ensure your system is certified and built to your industry’s specific standards. We install and maintain medical gas piping systems in many health facilities throughout the region, including hospitals and medical clinics.


Piping for various gases:

  • Medical compressed air
  • Instrument Air
  • Compressed air for labs
  • Cryogenic Liquids
  • Dental Compressed Air
  • Oxygen, Carbon Dioxide,
  • Nitrous Oxide, Nitrogen
  • Medical Surgical Vacuum,
  • Laboratory Vacuum, Dental
  • Vacuum

Quality Guarantee

Using the latest technology, every piping product is 100% inspected to ensure it meets the required standards. We continuously improve our methods, procedures, and policies to ensure we achieve the highest standards and that all inspections and tests are completed as per our customers’ specifications.

Our inspection capabilities include:

  • (VT) Visual Testing
  • (RT) Radiography Testing
  • (UT) Ultrasonic Testing
  • (PT) Dye Penetrant Testing
  • (PMI) Positive Material Identification
  • (MPI) Magnetic Particle
  • Inspection
  • Hydrostatic Testing
  • Pneumatic Testing


Rigid Welding Inc is fully certified by the TSSA in:

    • Manufacture and repair of pressure vessels in accordance with ASME Boiler and Pressure Vessel Code, Section VIII, Div.1 and CSA Standard B51, Boiler, Pressure Vessel and Pressure Piping Code.
    • Fabrication and assembly of Power Piping and in accordance with CSA Standard B51, Boiler, Pressure Vessel and Pressure Piping Code and ASME B31.1
    • Fabrication and assembly of Process Piping and in accordance with CSA Standard B51, Boiler, Pressure Vessel and Pressure Piping Code and ASME B31.3
    • Fabrication and assembly of refrigeration piping in accordance with CSA Standard B52, Mechanical Refrigeration Code and ASME B31.5 Refrigeration Piping.
    • Fabrication, assembly, and repair of non-flammable medical gas piping in accordance with CSA Standard B51, Boiler, Pressure Vessel and Pressure Piping Code and CSA-Z7396.1 Medical Gas Piping Systems.