The base body is made of high-grade alloy steel for assuring drilling efficiency

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.

borehole dia: 42mm, 44 mm, 50 mm, 76mm, 82mm

connection way: 13*13, 18*18,24*24