NCCER Pipefitter Practice Questions - NCCER Pipefitter Certification Exam

When threading pipe, what is the purpose of applying cutting oil?

To make the threads shiny To lubricate and cool the die, extending its life and producing cleaner threads To seal the threads against leaks To prevent the pipe from rusting after threading

Correct Answer:

To lubricate and cool the die, extending its life and producing cleaner threads

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