Core Barrel
Keywords：
Pile foundation drilling tools
Classification：
ProductDetail
Core barrel with bullet teeth
Core barrel with roller cone
In engineering, there are often hard bedrock, large driftstone layer and hard permafrost layer. It is difficult to drill directly with mud rotary drill bit, it is necessary to cut ring groove with core barrel firstly, and then drill with rotary drill bit, thus can improving the drilling speed greatly. The cutting tooth can be bullet teeth or roller cone.The core barrel with bullet teeth is used for soft formation and permafrost formation.And the core barrel with roller cone is used for hard formation.
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Junziguan Villiage, Xicun Township, Hejian City, Hebei Province,China
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