A hollow auger is a tube with a helical surface which is extracted from the borehole rock by mechanical means. Such equipment is used for drilling holes in loose and soft soil. Due to its design rotary screw promotes the lateral surfaces of the well. Hollow screws are used for drilling:
-for engineering surveys;
-to form the foundations of industrial and civil buildings.
Samozakreplenie borehole walls is one of the main advantages of auger drilling. Widespread use of hollow screws received in the construction business. With their help, created CFA and bored piles, which have many advantages and are used mainly on soft ground. Hollow screws are made of high-strength materials through which these devices are able to withstand severe load.
Drilling technologies Factory offers hollow screws of various sizes and purposes. In our wide assortment you can easily find exactly what device you need. We sell only high quality hollow screws at an affordable price.