>B.I. pipe comes with a "thread protector"
Okay, what is B.I., please?
This sounds like a gotcha that I should know about. And I sure hope you don't mean black iron.
Should those protectors should be marked "Remove before installing" or "Discard this thread protector" or "Not for connection".
Of course, making the free end physically unable to connect to another pipe would be a pretty good idea too.
Black steel (usually 21' lengths) comes with a coupler fitted on one end as well. But I thought that this was for speed of assembly, though it also helps to protect those threads.
