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SHANDONG LUZUAN MINING MACHINERY EQUIPMENT CO., LTD.

SNIEC E5.830

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Roof-Bolt Drill Bits (28/30/32/42 mm)

Product Category: Exploration drilling

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Product Introduction

Roof-bolt drill bits are used for bolt support holes in coal mines and tunnels, with common diameters of 28, 30, 32 and 42 mm in two-wing, three-wing and cross types. Forged bodies carry brazed PDC or carbide cutters for fast penetration and long life, and the shank fits common pneumatic, hydraulic and hand-held roof bolters for easy installation. The bits perform reliably in medium-hard sandstone, mudstone and limestone, and can be customised to specific rig connections and hole diameters.

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