Reverse gear reamer

As the construction party, everyone is very concerned about the drilling speed, because the drilling speed is related to the drilling cost per meter. In construction, it is very important to select cone bits with different tooth shapes according to different strata.

As the construction party, everyone is very concerned about the drilling speed, because the drilling speed is related to the drilling cost per meter. In construction, it is very important to select cone bits with different tooth shapes according to different strata.

1. The cone bit is divided into iadc437 (long spoon / wedge tooth, very soft formation), 517 (spoon tooth, soft formation), 537 (spoon / wedge tooth, medium hardness formation) and 547 (cone tooth, medium hardness formation) according to the tooth shape

Stratum), 617 (small wedge / small cone tooth / small spoon tooth, medium to hard stratum), 637 (cone tooth / cone ball tooth / ball tooth, hard stratum).

❶ we must remember that there is no best tooth shape, only the most suitable tooth shape.