professional welder process pipeline oil refinery russia |
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| navigate by keyword : arc argonarc assembly connection construction danger diameter dn50 electrode equipment fire flash gas helmet hot industry inspection labor lighting machine man manual melting metal oil order pipe pipeline process professional refinery russia safety semiautomatic shell smoke spark specialist steel technological technology weldability welder welding welds wire work worker |
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| A professional welder welds a pipe with a diameter of DN50 for a process pipeline to an oil refinery in Russia |
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