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1M 3M 6M Length 89mm Drill Rod For Water Well / Coring Drilling
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NC26 / NC31 / NC35 / NC38 Threaded Drill Rod Seamless Mild Carbon Steel
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Tungsten Carbide Drill Rod , Small Hole Drill Extension Rod Shank H22 x 108mm
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High Strength Φ69/Φ75 Drilling Rod For Mining Drilling Gas Water Drill
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Strength Friction Submerged Rock Drill Rods For Core Drilling Rigs
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Tapered Thread Rock Drill Rods B22 Length Customized For Gas Drainage Hole
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Carbon Steel Integral Drill Rods , Mining Drill Rods For Rock Drilling
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Threaded Wireline Drill Rods , T45 Drill Extension Rod 48 - 80mm Hole Diameter
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T38 Blast Hole Rock Drill Rods Shape Customized With Good Low Temperature Toughness
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R25 Threaded Drill Rod , Threaded Extension Rod For Quarry / Rock Construction
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