station piping
station piping
(OP)
Hi,
I am looking for some information regarding the pipe fabrication methods. Is there any preference regarding SMLS (Seamless) v ERW (Electric Resistance Welded) v DSAW (Double Submerged Arc Welded) for station piping with MAOP of 650 to 900 psi?
Cheers
I am looking for some information regarding the pipe fabrication methods. Is there any preference regarding SMLS (Seamless) v ERW (Electric Resistance Welded) v DSAW (Double Submerged Arc Welded) for station piping with MAOP of 650 to 900 psi?
Cheers





RE: station piping
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RE: station piping
RE: station piping
Under A53, all E [ERW] seams get 100% 'electric' tested [typically eddy-current] at 2" and up. I've never had a problem with type E, just F.
RE: station piping
RE: station piping
Seamless is difficult to get above a certain size range (12 to 16" from memory) so there is little choice above that but below I think you would find seamless generally preferred for piping as pipe is relatively cheap compared to flanges and other fittings and seamless just makes this sort of thing go away.
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Also: There's usually a good reason why everyone does it that way