ASSEMBLE PATH · ONTARIO TRADE 456A
Welder
Welders permanently join, build and repair metal parts and structures using heat, pressure and filler metal while controlling fit, strength, quality and safety.
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WHY THE WORK MATTERS
Strong welds turn separate pieces into working structures.
Welders help build and repair the equipment, vehicles, piping, machinery and structures used in manufacturing, construction, transportation, energy and resource industries. Their work combines practical skill with material knowledge, precise preparation and continuous quality control.
EXPLORE IN ORDER
Four questions. One clearer next step.
WHERE THE WORK LIVES
From fabrication shops to major job sites
UNIQUE SPECIALIZATION
Underwater welding
Some welders move into commercial diving to repair ships, marine structures, pipelines and other submerged equipment. This is not simply welding while wearing scuba gear: it is a specialized occupational-diving career requiring commercial-diver training, medical fitness, dive-team procedures and additional welding competence.
See the underwater-welding pathway →EVIDENCE BASE
Sources & verification
Regulated, numerical and time-sensitive claims link to the authority used. Accessed and reviewed August 24, 2026.