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Trade Playbook
Steamfitting is industrial, high-paid, and travel-heavy — a different world from the building trades, and the questions reflect it: is it worth the shutdowns and the travel, how welding tickets multiply your pay, is the UA union basically mandatory (mostly yes), and what the boom-bust of turnaround work actually feels like. Top pipe welders are among the best-paid hands in all of construction.
Where it starts
A % of journeyperson rate
Apprentice
Where it tops out
Business income
Mechanical contractor
Union route
UA locals — the dominant route
Ontario figures for steamfitting, from the first day on site to the top of the trade. Approximate, and worth checking against current collective agreement rates and job postings in your region.
| Stage | Pay | What is going on at this stage |
|---|---|---|
| Apprentice | A % of journeyperson rate | Rising each level through the UA apprenticeship. |
| Journeyperson steamfitter (307A) | $45–55/hr + pension | UA union package — strong pension and benefits on top of the rate. |
| Pressure / pipe welder (CWB/ASME) | Premium | Welder-fitters are among the best-paid trades in construction. |
| Foreman | More | |
| Mechanical contractor | Business income | Owning an industrial mechanical contracting business. |
Two steamfitters with the same ticket can be twenty dollars an hour apart because they picked different work.
Installing process and pressure piping on new projects — steadier location, project-length work.
Best for: People who want big-project work without constant travel.
Boom-bust: intense overtime during a plant turnaround (60–84 hour weeks, per-diem, travel), then downtime between them. The big-cheque, hard-living end.
Best for: People who'll trade lifestyle for maximum earnings.
Every figure above is what steamfitters get paid. It is not what you charge once you run a steamfitting business. Your rate has to carry the hours you are not on the tools, the truck, the tools themselves, WSIB, insurance, the quote you wrote and lost, and the holdback sitting in someone else's account for 60 days. Contractors who set their rate off their old hourly wage are the ones who work every weekend and still cannot say whether the year was profitable.
The step from paid by the hour to paid by the jobOff the tools: foreman, QA/QC, welding inspection (CWB/API), estimating, project management, or owning an industrial mechanical contractor. The travel and shutdown life are exactly why many steamfitters move toward local maintenance, supervision, or inspection as they get older or start families. Welding inspection in particular is a respected, well-paid landing.
Wage data, union rate sheets, and the places steamfitters talk about money openly.
The rates above are the market. The live feed is the market this week: which builders and contractors just pulled a permit or won a contract in Ontario, what they are about to need, and who to call.
HVAC, Refrigeration and Mechanical Jobs in Ontario: Who Is HiringAEC Stack handles incorporation, WSIB, insurance certificates, quoting, invoicing, and chasing the money, so a steamfitting business runs like one with an office behind it.
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