钻具特点:筒体环切释放岩石围压;截齿阶跃破碎兼研磨钻进 ;小钻具取芯率高,大钻具分级配合破碎 ;适用地层:回填层、中风化岩层,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φ600120050016202006540φ800120070016202009690φ9001200800162020010750φ10001200900162020011870φ1200120011001620200131020φ1500120014001620200161400φ1600120015001620200171530φ1800100017002020200191860φ200080019002020200211870φ220080021002020200232400φ250080024002020200272705φ280080027002020200303200φ300080029002020200323800备注:所有度量单位为毫米(mm);重量单位为千克(kg)。