Pipe Roughness

Pipe roughness, mechanical terms. In mechanics, roughness refers to the micro-geometric characteristics of small pitches and peaks and valleys on the processed surface. It is one of the problems of interchangeability research. The surface roughness is generally formed by the processing method used and other factors, such as friction between the tool and the part surface during processing, plastic deformation of the surface layer metal when chips are separated, and high-frequency vibration in the process system. Due to the different processing methods and workpiece materials, the depth, density, shape and texture of the marks left on the processed surface are different. Surface roughness is closely related to the matching properties, wear resistance, fatigue strength, contact stiffness, vibration and noise of mechanical parts, and has an important impact on the service life and reliability of mechanical products.
Pipe absolute roughness
Surface material Surface material ε mm
Aluminum, zinc 0.001~0.002
Copper, copper tube 0.0015
PVC plastic tube 0.0015
Glass fiber 0.005
Stainless steel 0.015
Commercial steel pipes 0.045~0.09
Tensile steel 0.015
Welded steel 0.045
Galvanized steel 0.15
Ordinary steel 0.15~4
Riveted steel 0.9~9
New cast iron 0.25~0.8
Wear cast iron 0.8~1.5
Corrosion cast iron 1.5~2.5
Asphalt cast iron 0.012
Galvanized iron 0.015
Cement smoothing 0.3
Ordinary concrete 0.3~3
Planed wood 0.18~0.9
Ordinary wood 5

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