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R25-35mm R32-45mm Thread Button Bits Testing Visit in USA
Date: May 17, 2019
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Visiting TIme: 2017-2018 2018-2019
Visiting Site: Headquarter office of Birmingham.
Rock Drilling Tools Tested: R25-35mm Drill Button Bits, R32-45mm R32-51mm
Thread Drill Button Bits, T38-64mm T38-51-102mm Thread Reaming Button Bits.
Rock Sample Information:
Testing Quantity: 100 pieces of R25-35mm Button Drill Bits, spike carbides, ballistic carbides, T38-64mm 80 pieces, T38-51-89mm Integration Reaming Bits, T38-51-114mm Reaming Bits. Face Design: Flat face, Skirt: Normal Skirt.
Testing Feedback;