Grouting steel pipe

The utility model relates to a grouting steel pipe, and relates to the technical field of tunnel construction protection, the grouting steel pipe comprises a grouting steel pipe rod body and an extension sleeve connected to the grouting steel pipe rod body, the top of the extension sleeve is closed, the extension sleeve is connected with an air pipe and a water pipe, the air pipe is communicated with a compressed air source, and the water pipe is communicated with a water source. The extension sleeve is further provided with a connecting assembly, and the connecting assembly is used for connecting the extension sleeve and the grouting steel pipe rod body. The grouting steel pipe pole body can be conveniently cleaned, and the cleaning effect is good. 本申请涉及一种灌浆钢管，涉及隧道施工防护的技术领域，其包括灌浆钢管杆体和连接在灌浆钢管杆体上的延伸套管，延伸套管的顶部闭口设置，延伸套管上连接有气管和水管，气管连通有压缩气源，水管连通有水源，延伸套管上还设有连接组件，连接组件用于将延伸套管和灌浆钢管杆体相连。本申请能够便捷清理灌浆钢管杆体，清理效果好。