Tianwei KL series bored pile drilling rig is a new generation multi-function pile machine, which can drill dia. 1000mm piles. Mainly consists of power types, KL series is widely applied in piling foundations of urban constructions, railway foundations, deep excavation retaining projects etc. both in civil and industrial construction work. There are two types due to different movement methods, crawler type KLU and walking type KLB, thus could be adopted in different geological conditions, and different foundation construction methods .