Pitted appearance on 8" xxs steel pipe
Pitted appearance on 8" xxs steel pipe
(OP)
I recently purchased some 8" double extra strong Pipe.
the pipe has a pitted appearance which the mill tells me is normal. There is no corrosion evident so what would make the pipe appear pitted? There is a clear laquer protective coating over the pipe which does not seem to be the culprit. The mill states the .875 wall requires them to run a rough process. What does that mean?
Cynthia Brugger, CPM
Erection & Welding Contractors
the pipe has a pitted appearance which the mill tells me is normal. There is no corrosion evident so what would make the pipe appear pitted? There is a clear laquer protective coating over the pipe which does not seem to be the culprit. The mill states the .875 wall requires them to run a rough process. What does that mean?
Cynthia Brugger, CPM
Erection & Welding Contractors





RE: Pitted appearance on 8" xxs steel pipe
RE: Pitted appearance on 8" xxs steel pipe
RE: Pitted appearance on 8" xxs steel pipe
RE: Pitted appearance on 8" xxs steel pipe
RE: Pitted appearance on 8" xxs steel pipe
If it does note meet it, you are well within your right to refuse it.
RE: Pitted appearance on 8" xxs steel pipe
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"Pumping accounts for 20% of the world's energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies) http://virtualpipeline.spaces.live.com/
RE: Pitted appearance on 8" xxs steel pipe
RE: Pitted appearance on 8" xxs steel pipe
RE: Pitted appearance on 8" xxs steel pipe
never the less, Will SSPC SP10 w/build up primer make any difference?
Cynthia
RE: Pitted appearance on 8" xxs steel pipe
US domestic
132.00 a foot
ALWAYS call the Texas Gulf Coast when looking for pipe
RE: Pitted appearance on 8" xxs steel pipe
RE: Pitted appearance on 8" xxs steel pipe
black laquered paint for protection
from Northstar Mill V&M
Not mine....my distributor
You could call northstar for a picture sample
RE: Pitted appearance on 8" xxs steel pipe
The whole issue is not integrity but rather appearance.
I wish someone could aol me with a direction or a industry reference to the process
RE: Pitted appearance on 8" xxs steel pipe
RE: Pitted appearance on 8" xxs steel pipe
RE: Pitted appearance on 8" xxs steel pipe
The "square-edged" and "rectangular" pits are odd - never seen them in power piping (steam and feed water) like that. I'd follow your instincts on this one - which is why they are there as a survival trait urging "Caution! There's a tiger behind that bush." - and require the seller show you that that level of pits meets the "manufactored in good order and of high quality" generic material spec.
RE: Pitted appearance on 8" xxs steel pipe
RE: Pitted appearance on 8" xxs steel pipe