Question 319General Subjects - QMED
70% to passCopper tubing is manufactured and classified as type K, L, and M. Which type would offer the greatest wall thickness for a given nominal size?
AType K
BType L
CType M
DType K, L and M have identical wall thicknesses
AI Explanation
The correct answer is A) Type K. Type K copper tubing has the thickest wall thickness among the three types (K, L, and M) for a given nominal size. This is because Type K is designed for the highest working pressure applications, while Type M has the thinnest walls and is intended for lower pressure uses. The wall thickness increases from Type M to Type L to Type K to accommodate higher pressure requirements. The other options are incorrect because Type L and Type M have progressively thinner wall thicknesses compared to Type K for the same nominal size, and the wall thicknesses are not identical across the three types.
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