螺旋钻杆/ High efficiency drill pipe
螺旋钻杆是以四方或六方进行首尾连接，采用弹簧销自动锁合或半圆销、直插销、∪型销、长圆楔型销进行连接定位，可以快速连接的螺旋钻杆。连接方便快捷，具有重量轻、弹性高、不易弯曲的特点，与其它钻杄相比，具有操作方便，钻进速度快的明显优势，因此称为螺旋钻杆。
螺旋钻杆广泛应用于煤层及近煤层地质条件下的钻探、煤矿的探水和瓦斯排放钻孔施工，也可用于物探和水利建设工程的锚固、钻探施工等领域，分为通水型和不通水型。
High efficient spiral drill pipe is in a square or hexagonal were connected from head to tail. the spring pin automatic lock together or semicircle pin, straight bolt, U type pin, oblong wedge pin is connected with the positioning you can quickly connect the spiral drill pipe. Connecting convenient, with the characteristics of light weight, high flexibility, not easy to bend, compared with other drill pipe, has the advantages of easyoperation, high speed of drilling, so called the efficient screw drill pipe.
Efficient spiral drill pipe widely usedin drilling in the coal seam and near coal seam geological conditions, the coal mine to explore the water and gas drainage borehole construction, can also be used for anchorage, drilling, construction and other fieldsof geophysical prospecting and construction of water conservancy projects, water type and the barrier ofwater-saving
