Wanted: Threaded Aluminum Bung

Welded in place in a steel pipe or aluminum pipe?

Any machine shop can produce aluminum threaded bungs, but I wouldn't presume to think that such are a standard product of any company.

Yes, I agree with the machine shop idea, but I was wondering if these were already made by a firm that I could purchase, like a bulk item. The welding will be in an aluminum pipe if the cap and bung are aluminum and the same if its stainless, bung/cap. Thanks.

If you're after bulk quantity, then look for "Aluminium die casting" firms that could produce these very competitively for you.

By all means, use the machine shop to produce prototypes, but for high volume the cost advantage of die casting will come into play.

I honestly never considered that, good point. I shall look into that. Thanks so much.

Least expensive option -

I would thread the pipe and use a threaded coupling and put a plug in the coupling or just put a threaded cap on the pipe. Just take the pipe to a plumbing shop or have a plumber bring his pipe die to the pipe. You may also be able to buy a pipe die in a hardware store. Teflon tape may seal the threads. The piping materials mix may not be a big deal, depending upon how long this has to last and a lot more info about what is in the pipe, etc ?

More expensive -

There are weld couplings, that would be slipon weld by threaded (or screwed to any pipefitter). Go to a steam-fitter or weld shop, depending upon pressure, and codes, etc. for the application.

Without know what types of materials, wall thickness, fluid or gas in the pipe, pressure, and lots more questions all answers are subject to change...

Here is some information to get you started.

Here is a supplier of aluminum bungs. Good luck.

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