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The base body is made of high-grade alloy steel for assuring drilling efficiency. Because the drilling depth is usually up to dozens of meters, the strength and toughness of drill bits must be powerful. All the alloy segment is imported from abroad and selected through nanometer technique to ensure and improve the hardness and strength. It adopts low-temperature vacuum pervasion welding method to ensure the high efficiency and durable life
Specification | |
Drill Hole Diameter | φ42,φ44,φ50,φ76,φ82 |
Connection Dimension | Squaring connection with size of13×13 , 18×18,24×24 |
Special service base on customer request. | |
High-efficiency Comcined Drill Bit