What is "pipe trim"
What is "pipe trim"
(OP)
Greetings,
I am doing some conceptual estimating for a small chemical batch plant. I am relying on a reference Planning, Estimating and Control of Chemical Construction Projects for much of the estimating data. In the Piping Estimating section the authors offer a table of basic piping unit costs vs material and size for the following line items:
Pipe, per ft
Fittings, each
Flanges, each
Trim, each
I am unfamiliar with the term "trim". What is piping trim?
Thanks in advance,
JoeChem
I am doing some conceptual estimating for a small chemical batch plant. I am relying on a reference Planning, Estimating and Control of Chemical Construction Projects for much of the estimating data. In the Piping Estimating section the authors offer a table of basic piping unit costs vs material and size for the following line items:
Pipe, per ft
Fittings, each
Flanges, each
Trim, each
I am unfamiliar with the term "trim". What is piping trim?
Thanks in advance,
JoeChem





RE: What is "pipe trim"
"If stupidity got us into this mess, then why can't it get us out?" - Will Rogers (1879-1935) ***************
http://virtualpipeline.spaces.live.com/
RE: What is "pipe trim"
RE: What is "pipe trim"
i.e. drain and vent lines, psv's, etc.
Zuccus
RE: What is "pipe trim"
Best regards
Morten
RE: What is "pipe trim"
The book does have a Glossary of terms but "trim" is not included.
The data in the Table are in unit costs. As an example for 1 inch 316 SS pipe:
Pipe, per ft $7.70
Fittings, each $15.70
Flanges, each $41.00
Trim, each $250.00
The costs need to be adjusted for inflation as a CE cost index of 420 is referenced.
I have asked all over the place and no one understands the meaning of trim as it applies to piping. I suspect all your replies are correct but I am just not sure.
I am going through some of the piping cost details at this point in the estimating exercise as I am really trying to understand the rough cost differences between SS pipe and SS tubing (compression fittings). Hence the reason for trying to understand "trim" and what this is exactly. The project could use either pipe or tubes. Right know it look like the difference might be a wash as the compression fittings are much more expensive but this is balanced out by less engineering and field installation labor. Do any of you have any experience with the piping/tubing cost difference?
Thanks,
JoeChem
RE: What is "pipe trim"
Piping cost caries a large component of design. If you simply specify field run tubing, nothing needs to be designed or prefabricated to tolerances and hope that it fits when the part gets to the field to be installed.
EJL
RE: What is "pipe trim"
Time saved adds up very quickly.
The trim reference for the piping could also mean things like insulation requirements, heat tracing,pipe shoes, anchors, pipe hangers, other special supports, so don't forget about those.
RE: What is "pipe trim"
1)I suggest you to check with the supplier/vendor if the reference is correct; not a typo error.
2) By "Trim" It may bear the indication of special sizes or cuttings or "bunch of some packaged offerring"
Hope this helps.
Best Regards
Qalander(Chem)
RE: What is "pipe trim"
In the Uk, trim would mean all the externals related to a pipe system routing ie. gaskets,nuts and bolts , washers, pipe supports,insulation,paint,earthing straps etc.
Offshore Engineering&Design
RE: What is "pipe trim"
"If stupidity got us into this mess, then why can't it get us out?" - Will Rogers (1879-1935) ***************
http://virtualpipeline.spaces.live.com/
RE: What is "pipe trim"
Big inch,
Just giving a trans-atlantic confirmation of your answer.European and American technical terms do not always agree.No plagiarism intended and apologies proffered.
Offshore Engineering&Design
RE: What is "pipe trim"
Best egards
Morten
RE: What is "pipe trim"
"If stupidity got us into this mess, then why can't it get us out?" - Will Rogers (1879-1935) ***************
http://virtualpipeline.spaces.live.com/