CFG spiral drilling tool is composed of screw drill and the spiral drill pipe, drill the long spiral drilling tool are all helical blade continuous coverage, cutting soil cut soil cut or to slide along the blade surface, or along the blade surface into a ball to roll out gradually from the spiral drill unearthed groove, garden for single drill pipe wall pipe can also be a double wall pipe, double-wall drill pipe while drilling while conveying air to reduce resistance in rotary drilling. Long spiral drill diameter of not more than Phi 800mm general, to import large drilling long spiral drill, spiral drill pipe diameter up to Phi 2500mm, this product is made of steel after heat treatment of high strength alloy steel, maintain high toughness and high wear resistance; the service life is growth, coated with wear-resistant layer.

CFG spiral drill pipe model range: 300mm 400mm 500mm 600mm 800mm, the center pipe: seamless alloy tube without bending, deformation, not. Spiral drill blade : forming a steel cold-drawing, strong toughness, good hole quality. Leaf thickness 10mm and 20mm. At the same time, can also be customized according to customer requirements. Kelly: overall good verticality, convenient disassembly, installation.

800mm CFG spiral drill pipe