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G30 Taper Drill Rods
According to the different choices of customers, we offer four quality products, including Grade A,Grade B,Grade C and Grade D. Customers can choose suitable drill rod according to different hardness of rock and types of rock drilling tools. Grade A drill rod QSAAA and GTIII can be applied to solid rock, III level or above and f≥12 rocks according to Protodikonov’s Hardness Coefficient of Rock. Grade B drill rod QSAA and G30 is suitable for IV level or above and f≥12 rocks, Grade C and Grade D drill rod suitable for IV level or below and f≤8 rocks.
QSAAA, GTⅢ, QSAA, G30 Taper Drill Rods
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Angle
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7 /11/12 degree
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Brand
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QSAAA,QSAA,GTIII,G30
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Shank size
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H22*108mm/ H25*108mm/H25*159mm.
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Package
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5 pieces with a small bundle,50 or 100 pieces with a big bundle.
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Production process
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involving multiple processes, such as steel rolling, forging, normalizing,quenching and tempering, etc.
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Raw material
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It is 55SiMnMo ，320*480 large-section continuous casting billet, then rolling into 150*150 square billet after inserting core rod
and seamless pipe. |
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