Medium Formations

35 mm Seven-Button Cold-Pressed Bit for Tunneling

• Size35 mm (1.38 in)
• ConnectionNot stated; verify drill rod interface

T38/R38 Multi-Tooth Button Bit for Rock Mining

• SizeT38 or R38 nominal 38 mm class (about 1.50 in); hole gauge not stated
• ConnectionSeparate T38 or R38 models

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Selecting Drill Bits for Geothermal Drilling

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Medium Formation Drill Bit Selection for Sandstone and Carbonates