Pipe schedule/type
Pipe schedule/type
(OP)
I am in the planning stage to replace part of an underground water system that operates at 180 psia. The drawings of the system are dated from late 1950s. The drawing indicates one of the pipes is 16" CW-175, and that it is cement-mortar lined. I measured the outside diameter of the pipe (twice) and it measures 14.75 in. Not sure what the CW or the 175 means. Anyone familiar with this type of pipe, it does not seem to match any pipe schedules I know of.
(There is also a 30",20",14", and 12", all say CW-175)
(There is also a 30",20",14", and 12", all say CW-175)





RE: Pipe schedule/type
CW = Circulating Water?
175 = 175psig working pressure? (you said 180psia, so 175psig fits)
Why the OD is 14.75 on a 16" nominal line is another matter. That doesn't fit IPS or DIPS at 14".
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RE: Pipe schedule/type
As to weird O.D. size you found, 'bout only thing I can even think of is a mis-marked 14" steel line that was rolled to a special little larger O.D. size size so as to end up with 'bout a nominal 14" lined bore with wall and lining thicknesses considered, though I've not even heard of that being done on this small of pipe (at least one of the pipe sizes you believe you have somewhere is 14"!)
RE: Pipe schedule/type
I do not have any idea about the meaning of the number 175 and odd sizes.
RE: Pipe schedule/type
Regards,
SNORGY.
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I have a client spec that lists "ERW API 5LB C&W". Anyone has an idea what C&W standa for?
The welding is already defined by ERW, its plain API 5L grade B pipe, so I was under the impression C&W is not some sort of abbreviation for welding or whatever.
RE: Pipe schedule/type
RE: Pipe schedule/type
RE: Pipe schedule/type
rmw
RE: Pipe schedule/type
RE: Pipe schedule/type