pipe roughness value

5764 Monkland avenue, Suite 311, Montreal, Quebec, Canada H4A 1E9 Tel: 514.484.PUMP (7867) Fax: 514.484.2294 E-mail: [email protected] Web site: www.fluidedesign.com PIPE ROUGHNESS VALUES Jacques Chaurette p. eng., Fluide Design Inc. April 2003 Pipe absolute roughness values (RMS) Material Absolute roughness (in x 10 -3 ) Absolute roughness (micron or m x 10 -6 ) Riveted steel 1 36-360 915-9150 Concrete 1 12-120 305-3050 Ductile iron 2 102 2591 Wood stave 1 3.6-7.2 91-183 Galvanized iron 1 6 152 Cast iron – asphalt dipped 1 4.8 122 Cast iron uncoated 1 10 254 Carbon steel or wrought iron 1 1.8 45 Stainless steel 1 1.8 45 Rubber 4 1 25 Fiberglass 3 0.2 5 Drawn tubing – glass, plastic 1 0.06 1.5 Copper 2 0.06 1.5 Aluminium 2 0.06 1.5 PVC 2 0.06 1.5 Red brass 2 0.06 1.5 Sources : 1. Cameron hydraulic Data Book or Hydraulic Institute Engineering Data Book 2. Engineered Software’s PIPE-FLO software www.engineered-software.com 3. Fiberglass Pipe Handbook, SPI Composites Institute 4. Tests commissioned by author in 2000

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5764 Monkland avenue, Suite 311, Montreal, Quebec, Canada H4A 1E9 Tel: 514.484.PUMP (7867) Fax: 514.484.2294

E-mail: [email protected] Web site: www.fluidedesign.com

PIPE ROUGHNESS VALUES Jacques Chaurette p. eng., Fluide Design Inc.

April 2003

Pipe absolute roughness values (RMS) Material Absolute roughness

(in x 10-3) Absolute roughness (micron or m x 10-6)

Riveted steel1 36-360 915-9150 Concrete1 12-120 305-3050 Ductile iron2 102 2591 Wood stave1 3.6-7.2 91-183 Galvanized iron1 6 152 Cast iron – asphalt dipped1 4.8 122 Cast iron uncoated1 10 254 Carbon steel or wrought iron1 1.8 45 Stainless steel1 1.8 45 Rubber4 1 25 Fiberglass3 0.2 5 Drawn tubing – glass, plastic1 0.06 1.5 Copper2 0.06 1.5 Aluminium2 0.06 1.5 PVC2 0.06 1.5 Red brass2 0.06 1.5

Sources : 1. Cameron hydraulic Data Book or Hydraulic Institute Engineering Data Book

2. Engineered Software’s PIPE-FLO software www.engineered-software.com 3. Fiberglass Pipe Handbook, SPI Composites Institute 4. Tests commissioned by author in 2000

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