2 replies to this topic

[fallah]

Dear All,
Need acceptable Reference for roughness value of GRP pipes to use in hydraulic calculation.
Regards

[ankur2061]

Dear All,
Need acceptable Reference for roughness value of GRP pipes to use in hydraulic calculation.
Regards

Fallah,

Look in section 6.1 of Norsok P-001 edition 5. The free download link is:

http://www.standard....er.exe?id=13264

It is considered as a very respected reference.

Regards,
Ankur.

[sheiko]

Dear All,
Need acceptable Reference for roughness value of GRP pipes to use in hydraulic calculation.
Regards

The source given by Ankur2061 proposes a value of 0.0200 mm for Glassfiber-Reinforced Polyester

For smooth pipes, litterature also gives:

1/ For glass
a. 0.0015 - 0.0100 mm (Idel'Chik, I. E., Handbook of Hydraulic Resistance - 3rd ed., CRC, Boca Raton, Florida, pp. 105-109, 1994)
b. 0.0025 mm (Miller, Donald S., Internal flow systems - 2nd ed., BHRA, Cranfield, UK, pp. 190-191, 1990)
c. 0.0015 mm (Perry, Robert H., Green, Don W., and Maloney, James O'Hara, Perry's chemical engineers' handbook. - 7th ed., McGraw-Hill, New York, pp. 6-10, 1997)

2/ For plastic:
0,0025 mm (Miller, Donald S., Internal flow systems - 2nd ed., BHRA, Cranfield, UK, pp. 190-191, 1990)