drill rod Drilling Tool 40SiMnCrNiMo 55SiMnMo Forging Ore Mining. High quality B22 tapered drill rod hex22 hex25 108mm 159mm shank 7 11 12 degree from Shandong Yanggu Jingang Rock Drilling Tools Co., Ltd., Manufacturer/Factory of Tapered Drill Rods products from China.
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T51 MF drilling rod. Description. 1.T51 MF drilling rod improve energy transfer and gives faster drilling. The coupling sleeve is integrated in an T45 thread rock rod, so energy loss in each joint is lower compare to drilling with separate coupling sleeves,
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China Drilling Tools (rod, bit, hammer) catalog of 15feet G2 Grade Hexagonal Drill Rod for Jack Hammer, B22 7 Degree Tapered Short Drill Rod for Stone Drilling provided by China manufacturer - Quzhou Refine Machinery Equipment Co., Ltd., page2.