"Greg O" wrote in message
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"CBHVAC" wrote in message
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"Greg O" wrote in message
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"Art Todesco" wrote in message
t...
I was always told that black iron pipe joints are "tighter" because the
threads grind
into one another and that this doesn't happen in galvanized pipe.
Black iron was
supposed to be "softer" whatever that means. As I said, this is what I
heard. I really
never believed/understood it..



Sounds like BS to me. When you cut threads on galvanized pipe it cuts
off the galvanized coating, leaving bare metal, same as black pipe.
Greg

yea..but you are talking about two different metals too...



Really? My understanding is galvanized is nothing more than plated black
pipe.
Greg


Weigh em....
You will find the iron black will weigh much more..LOL

Of course, I dont mess with it much anymore...still got my threaders and all
that good stuff, but now, stainless is the way to go..we recently did a 3
story instituion, 5 units, and had all the gas piping RAN, in under 4
hours..two guys. Thats secured, ran, and all we had to do was put fittings
on each end, and connect.
I like that stuff....black pipe, ran the same way, would have taken about 3
days for two men to do.