Question

what is the difference between exterior diameter and interior diameter.

Answer 1

Objects like pipes and hoses have two different diameters. The outside diametermeasures the distance of a straight line from one point on the outside of the object, through its center, and to an opposite point on the outside. The internal diametermeasures the inside of the object.

Answer 2

Answer:

When it comes to measurement of pipe, it is measure by the inside diameter, often called the nominal diameter. ... The outside of the pipe is always larger than the inside. The difference between the inside diameter (ID) and the outside diameter (OD) is due to the thickness of the wall.

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