On Jan 22, 2:13*pm, dpb wrote:
RicodJour wrote:
On Jan 22, 1:01 pm, " wrote:
Galvanized isn't designed for Natural Gas.

The black iron pipe has closer tolerances.

galvanized is often welded up the side, rather than extruded like black
iron.

don't use galvanized for gas lines

Bingo. *I was waiting for someone to chime in with that. *It surprises
me that people don't notice such things, and assume that all iron/
steel is the same.

I still have no clue what sort of galvanized pipe they use on the
other coast and how it differs, or if it differs, from galvanized pipe
in the Northeast. *Anyone know?

Much black pipe is welded as well (ERW, commonly, these days).

It's not the manufacturing process, per se, that determines the ASTM
Standard to which any given pipe will meet but the combination of
materials and manufacturing and quality control. *Welded pipe may meet
or exceed a given seamless pipe of similar bore/schedule depending on
the intent and/or spec is was manufactured to. *IOW, it isn't whether
it's welded or not matters, it's the Standard to which it was graded.

The OP said he was shopping at Lowes. There is only one quality at
Lowes and they aim for the lowest selling price. What would you
deduce from that about the galvanized pipe they carry? That's a
rhetorical question.

R