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      Home > Cutting Tools > Measuring & Gauging Tools > cast iron straight edges
      Shanghai Chenghua Machinery Co., Ltd.
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      cast iron straight edges
      Model: CH024
      Made according to standard JB/T7977-99, material HT250, working surface made by skiving or precise rubbing. Used to test the straightness and flatness of workpiece and equipment installing. Working environment temperature (20 ? 5) ????

      Type (mm) Straightness and flatness
      of working surface Parallelism between working surfaces
      Precision grade ( ?m)
      0 1 2 0 1 2
      500 ? 35 3 6 12 4.5 9 18
      750 ? 40 4 8 15 6 12 25
      1000 ? 50 5 10 20 7.5 15 30
      1250 ? 5012 24 18 36
      1600 ? 7015 30 20 40
      2000 ? 8018 36 27 54
      2500 ? 80 44 65
      3000 ? 100 52 78
      3500 ? 100 60 90
      4000 ? 100 68 100

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