Q:
What should the outer diameter of a thick-welled lance be, for having good results?
Answer & Explanation
Answer: C) 17 mm to 19 mm
Explanation: In oxygen lance cutting, when the lance is made up of a thick wall, with its outer diameter of 17 mm to 19 mm, and possessing an inner diameter of 8 mm to 6 mm, respectively, then good results can be obtained.
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