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  1. Nominal and Metric Pipe Size Chart - mechGuru

  2. Pipes and Tubes - Imperial vs. Metric Sizes - The Engineering ToolBox

  3. Metric Pipe Sizes Dn vs NPS - Engineers Edge

  4. Fractional and Metric Tube Size Chart - Choose Your Tubing Sizes

  5. ASME/ANSI B36.10/19 - Carbon, Alloy and Stainless Steel Pipes ...

  6. Metric Round Tube

  7. Dimensions of Pipes and Tubes - The Engineering ToolBox

  8. Tubing Size Charts - Find the Tube Sizes You Need - Four Slide …