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Diamond Drill Core Bits Tube with Thread Adapter Item No.:

Producing tolerances:
Diameter: +/- 0.5mm
Working length: +/- 1.0mm
Wall thickness: +/- 0.1mm
Circular running:
till dm 29mm till 0.10mm
till dm 50mm till 0.15mm
till dm 60- 90mm till 0.20mm
till dm 100- 150mm till 0.30mm
till dm 160- 398mm till 0.35mm
till dm 400- 498mm till 0.40mm
till dm 500- 698mm till 0.50mm
till dm 700- 998mm till 0.60mm
till dm 1000- 1098mm till 0.80mm
till dm 1100- 1198mm till 0.90mm
till dm 1200- 1398mm till 1.10mm
till dm 1400- 1598mm till 1.40mm
plane running:
till dm198 -<0.06mm
till dm 200- max0.4mm

The quality standard as per sperling from Germany

update: May 14, 2010

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