钻具特点:筒体环切释放岩石围压;牙轮钻齿滚压研磨钻进,钻齿损耗小 ;小钻具取芯率高,大钻具分级配合破碎 ;适用地层:中、微风层岩层,硬岩层,超硬基岩层;型谱表:切削直径筒体高度筒体外径筒体壁厚加强圈厚度加强圈高度齿数重量φ600120050020202004600φ800120070020202006800φ900120080020202007820φ1000120090020202008980φ1200120011002020200101300φ1500120014002020200121600φ1600120015002025200131740φ1800100017002025200151950φ200080019002525200162350φ220080021002525200182700φ250080024002525200213000φ280080027002525200243800φ300080029002525200254300备注:所有度量单位为毫米(mm);重量单位为千克(kg)。