Common drill rod shape

1. Cone quadrilateral drill rod is the most common kind on the market. This kind of drill rod is with great penetrating power, even very hard objects can also be splitted by its force produced by the conical shape, including no reinforcement or reinforced concrete, slightly high hardness of rock, joint rock, etc. Its characteristic is: energy can be gathered at a point of penetration, is suitable for excavating mountain, repairing road and demolition.
2. Sector drill rod is used in a wide range. Its working principle is the same to the cone quadrilateral one, but in the same job environment, sector drill rod is a bit more wear-resisting, because their shape is more suitable for processing hard material, it is better to used sector drill rod to break reinforced concrete. In addition, they can also be applied to sedimentary rocks, high hardness of rock, and all kinds of soft and neutral stratified rock excavation, trenching operations.
3. Flat type of drill rod is used in secondary crushing. Because it is blunt and there is no sharp end, it cannot shatter by penetration and chopping operation object, its only embodies in the use of the length of the wear rate. The socalled secondary crushing refers to medium hardness of stones or have broken small stone crushing, to make it smaller. Also can be applied to flat drill rod broken brittle, hard objects, such as metamorphic rocks, rod and slag. Its characteristic is: energy is released through the big surface of the flat, without torque produced, with good crushing effect.

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