玩秒速赛车五码技巧

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加工PCD刀具/PCBN刀具/钻石/工业陶瓷的陶瓷金刚石砂轮

粒度: W3.5~100/120 型号:1A1 14A1 6A2 11A2 12A2 4A1

恭贺胜利油田钻井院金刚石钻头施工再创新纪录

2015.01.30  河南恒远超硬材料有限公司 ecuyj.cn  浏览次数:
胜利油田钻井院自主研发设计生产的新型金刚石钻头自沙四段3564米下入,3840米起出,进尺276米,钻头进尺是同井上一只牙轮钻头进尺的3.17倍。关于胜利油田,金刚石钻头,PCD钻头,油田钻头的信息

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来源: 中国超硬材料网   网络文档由陶瓷结合剂金刚石砂轮整理

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