Inferior pipe or not, I would never attempt to fill voids, torn threads, flat topped threads, galled threads or any thread that was not cut as close to perfect as my equipment allows which is pretty damn perfect. If you are having trouble achieving perfect threads then it's time to change dies and or adjust the machine properly and if hand threading perhaps change your technique. Nor will I use any fitting that does not visually pass inspection either. TM may have rubbed some the wrong way but he is IMO correct in his assertion that no one that does steel pipe for a living should be making up for bad threads by packing it with tape and dope. Tape is not allowed here at all for gas work.
On gas pipe, I use Rector Seal No. 5 for all my gas pipe installs. I use tape and pipe dope on the clean out plugs. The threads on most plugs and clean out ferrules are a bit sloppy and I do not want any leaks.
I did have a home inspector write up a water heater install I did for not using the so called yellow gas teflon tape. I arranged to meet with this home inspector along with the local plumbing inspector. The plumbing inspector asked the home inspector for his plumbing license, when the home inspector said he is not a plumber, the plumbing inspector told him to leave plumbing inspections to him then.
When cutting My own threads , they're always perfect! I just run a little spit on the threads. Of course,I'm a leg up on most mortals here, Myself
Last edited by toolaholic; 07-27-2011 at 04:32 PM.
I like to cut them using a 3 corner file. takes awhile but it's so satisfying
The hell with threading just weld it and be done.
Faster, and you get to weld like Tozzi suggested.
I have a vicious sun burn on both arms from welding a boat trailer yesterday. You would think a welding instructor would know better than to weld in a tee shirt Do as I say damnit not as I do