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SANYOU DIAMOND
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Diamond Bit Series
Series of Single-Pipe Bit
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全液压钻井绳索系列
Compact Bit Series
复合片不取芯钻头
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电镀钻头
Series Of Reamer
牙轮扩孔器系列
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工程钻头扩孔器
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Series of Drilling-With-Casing Bits
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Series of Drilling-With-Casing Bits
heel bit Φ91/78.5
跟管钻头又称“手套管钻头”、“套靴管”，应用于破碎、溶洞发育的复杂地层钻进，这里加简短的描述
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heel bitΦ111/97
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