Aha Trivia Stuff Everyone Should Know
Aha Trivia: Stuff Everyone Should Know · ahatrivia.com/mb-plumbing-afade0b3f93c

What is the main difference between a pipe and a tube?

Pipe is sized by iron pipe size, tube nominally.

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  1. Pipe carries gas, tube carries water
  2. Pipe is sized by iron pipe size, tube nominally ✔
  3. Pipe is always plastic, tube always metal

Why: PVC and steel pipe use iron pipe size, while copper and PEX tubing is measured nominally.

Huh, didn't know that: PVC and steel pipe use iron pipe size, while copper and PEX tubing is measured nominally.

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Pipe and tube are not cut from the same cloth.
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References

Answer: Pipe is sized by iron pipe size, tube nominally. PVC and steel pipe use iron pipe size, while copper and PEX tubing is measured nominally.

  1. Plumbing en.wikipedia.org/wiki/Plumbing
    PVC pipe for plumbing applications and galvanized steel pipe are measured in iron pipe size
    Checked 2026-11-07.

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