Final answer:
The outside diameter of an 8" (200mm) tube can be equal to the nominal diameter of an 8" (200mm) pipe, but this depends on industry standards that define dimensions differently for tubes and pipes.
Step-by-step explanation:
To assess whether an 8" (200mm) tube will have an outside diameter equal to an 8" (200mm) pipe, it is vital to understand that in industry, the definition of the diameter for tubes and pipes can differ. Generally, a pipe is defined by its nominal inner diameter, whereas a tube might be specified by outer diameter. Without additional specifications, an 8" tube could indeed have an outside diameter of 8 inches, similar to an 8" pipe's nominal diameter. However, if you're referring to standardized pipe sizes, the 8" nominal size for pipes does not directly relate to its actual diameter due to differing wall thicknesses and standards used in pipe manufacturing.