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Trade Playbook

Steamfitting

Compulsory trade, certification required

Steamfitter/pipefitter (307A) is a compulsory trade focused on industrial and commercial process and pressure piping — work that layers TSSA pressure-piping registration and ASME/CWB welding qualifications on top of the certificate.

Steamfitting at a glance

Licence to do the work
Required — 307A C of Q (compulsory)
Path in
Apprenticeship — 8,280 hours (about 4–5 years)
Regulated by
Skilled Trades Ontario + TSSA (pressure piping)
Insurance baseline
$5M CGL on industrial sites
Union route
UA locals — the dominant route

Where are you right now?

Learn it. Earn it. Own it. Pick the door that matches where you are.

Getting inBecome a steamfitterHow people actually enter this trade: sponsors, registration, hours, and school.Open Getting certifiedFinish your ticketAlready an apprentice? The Last Mile guide: closing out hours, booking the exam, exam day.Open Going out on your ownStart a steamfitting businessThe step-by-step from qualified tradesperson to incorporated, insured, bid-ready owner.Open Just lookingCommon questionsLicences, costs, timelines: the questions everyone asks, answered straight.Open

The licensing layer, explained

307A Steamfitter/Pipefitter is a compulsory trade. Pressure piping is regulated by TSSA and typically requires registered welding procedures and ASME Section IX / CWB-qualified welders. To contract industrial mechanical work you incorporate, carry the trade tickets, and register with owner safety systems.

Certifications in this trade

Insurance to expect

Industrial pressure work carries high consequence-of-failure exposure. Expect $5M CGL requirements on industrial sites plus possible pollution liability.

Go to the source

The official pages that govern this trade. Bookmark these, they are the final word on requirements and fees.

Keep reading

307A SteamfitterIncorporationCRA RegistrationWSIB & ProvincialTrade LicensingInsuranceSafety ComplianceOperational SetupBid Readiness

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