Miniature pile with steel pipes inserted in middle

The utility model relates to a middle-inserted steel pipe micro pile, which belongs to the technical field of piling technology, and comprises a grouting pipe, a support piece arranged on the circumferential outer side of the grouting pipe and a fixed sleeve arranged on the support piece in a sleeving manner, and the fixed sleeve is used for being placed in a foundation pit. The grouting pipe has the effect that the grouting pipe is not prone to inclining in the foundation pit. 本申请涉及一种中插钢管中插钢管微型桩，属于打桩技术的技术领域，其包括注浆管、设置于注浆管周向外侧的支撑件以及套设在支撑件上的固定套筒，所述固定套筒用于放置于基坑内部。本申请具有使注浆管在基坑内不易发生倾斜的效果。