What is the typical diameter of drill pipe? -------------------------------------------------- 3 1/2" to 6 1/4" depending on exact usage -- depth and needed "drill" (torsional) strength. Within certain limitations, a load of drill pipe would not appear to be much different from (different than) a load of steam locomotive flue stock; -- fire tubes or Superheater jackets. Mal Houck
Thanks Mal. In that case, the photo link to the gondola loaded with pipes must not be drill pipe. If a gondola is 9' (108") wide and you can see about 10-11 pipes from side to side, then those pipes must be over 8" in diameter...