Re: Cleaning up black iron pipe

dw1307
 

Yes & No... It is true that a lot of commercial threaders do use opening die heads, a lot don't. I used to thread a lot of pipe, and a lot of big stuff like 4" and the Ridgid dies we used did not open, they simply were turned in reverse to remove from the thread. Also the very common Ridgid ratchet style threaders do not open. You can get good quality threads from either style.

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