Friction resistance drill pipe. Also known as rotary drilling rig and pile driver. Rotary drilling rig is a comprehensive drilling rig, which can use a variety of substrates and has the characteristics of fast hole-forming speed, less pollution and strong maneuverability. 360c-2 is suitable for 540 friction drill pipe. The torque of this kind of drill pipe is greater than the design torque of the drilling rig, which is very suitable for 360c-2 rotary drilling rig. The short spiral drill bit can be used for dry excavation or wet excavation with rotary drill bit under the condition of mud wall protection. Rotary excavators can cooperate with impact hammers to drill hard strata and then dig holes. If the drilling tool with enlarged head is matched, reaming operation can be carried out at the bottom of the hole. Rotary drilling rig adopts multi-layer telescopic drill pipe, which has the advantages of less auxiliary drilling time, low labor intensity, no need for mud circulation slag discharge and cost saving, and is especially suitable for the foundation construction of urban construction.