SS vs Internal lined Pipes...
SS vs Internal lined Pipes...
(OP)
We are making studies about the material to be used for a boiler feed water line, diameter 8” or 10”, and about 2 kilometers length (also have about 170 elbows).
I would like to receive opinions or information about what is the most economical choice or adventages, about the application of stainless steel pipe and internal lined pipe.
The line will be 8” or 10”, will work about 50 °C and 140 psig.
Thanks in advance for your comments.
Admt63
I would like to receive opinions or information about what is the most economical choice or adventages, about the application of stainless steel pipe and internal lined pipe.
The line will be 8” or 10”, will work about 50 °C and 140 psig.
Thanks in advance for your comments.
Admt63





RE: SS vs Internal lined Pipes...
Normally lined pipe will be connected by flange connection. Can you accept many flange connections in the line (2 km.)?
RE: SS vs Internal lined Pipes...
Having said that, I've personally never liked lined pipe, tanks or vessels for most services. Linings eventually fail, and the problem gets dumped in the laps of the maintenance people. There are some applications where there is just no way around having a lining, but I'd avoid it, if I could.
RE: SS vs Internal lined Pipes...
I would suggest using a high density polyethylene (HDPE) pipe with fusion welded joints in a buried pipe or grade level installation for the 2 km length. There are too many joints for leakage to occur with the typical flanged lined piping system of that length. The 50 deg C temperature is borderline for HDPE, so confirm it with the HDPE supplier. The cost of buried HDPE piping system is low when considering savings of coating & wrapping + cathodic protection of other metallic buried piping systems.
See site of HDPE fusion welding tools for examples,
www.mcelroy.com
RE: SS vs Internal lined Pipes...
Good luck.
Steve Jones
Petroleum Development Oman LLC
Muscat
Sultanate Of Oman
RE: SS vs Internal lined Pipes...