Drill rod

The utility model discloses a drill rod, including the borer body, with borer body nested contact's shank collar, the center of shank collar be equipped with the trepanning, the shank collar cup joints with the borer body through the trepanning to be connected, the borer body is equipped with the water needle hole. The utility model discloses a drill rod, through set up with borer body nested contact's shank collar, easy to be cracked problem that the processing mode that can avoid traditional hot extrusion to extrude the shank collar leads to improves drill rod's life, has just reduced drill rod's manufacturing cost. 本实用新型公开了种钎杆，包括钎体，与钎体嵌套连接的钎肩，所述的钎肩的中心设有套孔，钎肩通过套孔与钎体套接连接，钎体设有水针孔。本实用新型的钎杆，通过设置与钎体嵌套连接的钎肩，可以避免传统的热挤压挤出钎肩的加工方式所导致的易断裂的问题，提高钎杆的使用寿命，且降低了钎杆的生产成本。