Threading question

[Demon]

I just have little question here;

Can i get a 3 inches long, 1/2 plumbing pipe threaded female at one end and male at the other one?

My rona has a threading machine but i dont know if they can do this.

Thanks for answers.

[c11man]

they dont make them but just put a coupler on the one end to get to female threads

[Hubb]

If it is to be done in this manner, you will have to flare the female end so that it will mate with a male end. As c11man said, just get a female adapter. It would probably be cheaper than paying someone to thread the interior of the pipe anyway.

[c11man]

i tap the inside of 1/4inch pipe to 1/8inch for some projects but it is almost the exact size for that and i use my own pipe tap for it

[Demon]

Yeah... but it needs to be short. i will have to find another way.

Thanks tough.

[metalmeltr]

Use a close nipple and a female to female coupler. The close nipple is the shortest available. It is threaded to where the threads are right up against each other back to back.

[c11man]

i came across this on a site when i was looking for some brass fittings
http://www.plumbingsupply.com/brass.html

scroll all the way to the bottom of the page

[D_Hall]

Yeah... but it needs to be short. i will have to find another way.

You said it needed to be 3" long. That should be PLENTY of space to do the ol' "pipe nipple into pipe coupler" stunt.

[Demon]

I have a little new question here;

Can i thread a metal rod(that is the exact size of the real plumbing pipe) to like 3/4" but all the way on 3 inches ?

Without that cone shaped thread that makes fitings stuck together?

With a threading machine.

Please tell me if you know.

[D_Hall]

Huh?

I've read that 3 times now and I still have no idea what you're trying to do.

[Demon]

It would be making a threaded tit of 3/4 inch, but with a steal rod(i mean a plumbing pipe but not hollow), so i would be getting a tit, like a plumbing pipe one would, but not hollow, it would be full of steel.

Little paint here;


(i need that to then, after drill holes of right size in it)



Can it be made(with a threading machine) ?

[POLAND_SPUD]

if you're asking if it's possible to thread a rod then the answer is yes

'cone shaped' threads are called tappered threads

[Demon]

if you're asking if it's possible to thread a rod then the answer is yes

Yea, but with npt threads, but not tappered...

Not shure if it can be done.

[POLAND_SPUD]

NPT is tapered (also notice the spelling I made a typo in my last post)
http://en.wikipedia.org/wiki/National_pipe_thread

so it's best if you use BSPP
http://en.wikipedia.org/wiki/British_st ... ipe_thread

but you might as well use NPT... you might experience some problems with sealing it if you thread it all the way but it should mate

[dewey-1]

Here is a good explanation and charts to show the thread differences for:
NPT, NPS, BSPT BSPP

http://pipeandhose.com/?q=node/19