Roughness

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Values of surface roughness for various materials:

Material

Surface Roughness k, inch

Drawn tubing 0.00006
Commercial steel 0.0018
Galvanized iron 0.006
Cast iron 0.010
Wood stave 0.0072 - 0.036
Concrete 0.012 - 0.12
Riveted steel 0.036 - 0.36

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Last Modified on: 14-Sep-2014

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