Assertion: welding | /r/HasProperty | performed
Facets:
Source sentences:
text: Some plastics will begin to burn at temperatures lower than their glass transition, so welding can be performed by blowing a heated, inert gas onto the plastic, melting it while, at the same time, shielding it from oxygen.
text: In thick metals, and when welding can be performed from both sides of the work piece, a double-V joint is used.