三牙轮钻头用于石油开发钻探、水井、煤田勘探、工程开发等用途， 适用于软硬交错地层，如软页岩、粘土、盐岩、石灰岩、硬石膏、砂岩、砾岩、白云岩、硬砂岩等

优点： 热稳定性强，抗冲击能力较强。

TCI cone bit used in oil drilling, water well, coal field exploration and development of engineering applications， apply to soft hard staggered formation, such as soft shale, clay, gypsum, limestone, gypsum, sandstone, conglomerate, dolomite, sandstone, etc .

Advantages: strong thermal stability, impact resistant ability is stronger.