Welding Galvanized Piping
Welding Galvanized Piping
(OP)
Is it ok to weld schedule 10 galvanized piping on a dry pipe sprinkler system per NFPA 13? I would think not, but could not find any reference.
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RE: Welding Galvanized Piping
RE: Welding Galvanized Piping
-What about the welding fittings?.
I mean, for example: I have a galvanized pipe welded to a butt welding fitting (like ASTM A234 tes or ellbow, and I think it is not a standard to have galvanized fittings, please clarify me if not).
-If the welding is a butt weld of two galvanized pipes. How can I apply a coating to the bead internally?.
In this cases, would you have a galvanic couple situation that would promote the formation of a local corrosion problem?
RE: Welding Galvanized Piping
I think Adam is talking about a welded outlet on the dry system main. It is done quite frequently. I know that doesn't always make it ok, but I have yet to hear of problems in dry systems where the outlet is welded to the main....maybe I have just been lucky..
RE: Welding Galvanized Piping
RE: Welding Galvanized Piping
RE: Welding Galvanized Piping
I'm not aware of any welding proceedures that wouldn't disturb the galvanize, could you fill me in?
RE: Welding Galvanized Piping