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  • John Duff Ltd Website
    519.882.0740
    210 Tank St, Petrolia, ON N0N 1R0

    John Duff Limited is a custom metal fabricating company based in Petrolia, Ontario, offering over 50 years of expertise in steel fabrication for industrial, construction, manufacturing, commercial and agricultural sectors. They produce both production runs and one‑off items, including shearing, for…