How to look up the absolute roughness of steel pipes in a table?
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Where can I find a table showing the absolute roughness of steel pipes? It’s not available in either GB/8163 or GB/9948. I’d appreciate some advice from those who know more about this.
GB/T1031 – Parameters of surface roughness and their values; these should be available by referring to this standard
Hot-rolled tubes: 3.2–6.3. Drawn tubes: Normally annealed tubes have a value of around 3.0; bright tubes that are not annealed typically have a value of around 0.8, while bright tubes produced using advanced processing techniques have a value of 0.2–0.4
Thank you all for your participation. I’ve found it; it can be found in the Chemical Engineering Design Handbook.