組合式軟巖鉆桿
組合式軟巖鉆桿/ Combined- type soft rock drill pipe
鉆桿為空心結構、重量輕、抗彎性能良好。大螺距排粉，排粉粒度大，粉塵少。方孔卡豆式連接，節約安裝時間，提高連接的可靠性，避免丟、卡鉆頭現象。鉆桿首尾可互換，増加了鉆桿的使用壽命。連接桿
可打15m內深孔。
Drill pipe is hollow structure, light weight, bending performance is good. Big big row pitch powder,powder particle size, less dust. Square hole card bean type connection, saving installation time, improvethe reliability of conne ction, avoid to being thrown away and the phenomenon of drill bit. Drill pipe end areinterchangeable, increased the service life of drill pipe. Connecting rod to play within 15 m deep holes.
