K3高风压潜孔冲击器钻头

>> 技术描述：
1、钻头零件号随钻孔直径以及钻孔条件变化
Button Bit part number varies according todrilling diameter and drilling conditions
2、与K3,DHD3.5兼容潜孔钻车

Compatable with K3,DHD3.5