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Boiler Bushings for VFT
Posted: Tue Jul 06, 2021 8:13 pm
by tandemcompound
i am starting to make the bushings for the exterior boiler fittings. Just spent an hour looking at ASME code B31 but could not come up with an A number for the quality of steel for the raw slug. I will bore, thread, and put an exterior taper on it. Does anyone know what quality steel I should use?
Re: Boiler Bushings for VFT
Posted: Tue Jul 06, 2021 9:53 pm
by barts
Any particular reason you're not using thread-o-lets?
https://bonneyforge.com/products.php?pg ... =thredolet
- Bart
Re: Boiler Bushings for VFT
Posted: Tue Jul 06, 2021 10:04 pm
by Kelly Anderson
You can use SA 105, SA 675, or SA 696. You can buy A 105 half couplings from McMaster to save some time.
https://www.mcmaster.com/4513K77