Grouting galvanized tube

The utility model discloses a grouting galvanized tube which comprises a hollow grouting tube body. A plurality of grout jetting holes are formed in one end of the grouting tube body, and the grouting tube body comprises an anchoring tube, a connecting tube and a grout jetting tube which are in screwed connection in sequence. The anchoring tube, the connecting tube and the grout jetting tube are smooth hollow steel tubes. A plurality of circles of steel wires are wound on the periphery of the middle of the anchoring tube, and the wires are in spot welding with the outer periphery of the anchoring tube. A plurality of grout jetting holes are formed in the free end of the grout jetting tube. According to the grouting galvanized tube, the smooth steel tubes serve as basic parts, unified material selection is convenient, and the processing technology is simplified. The steel wires on the periphery of the anchoring tube can better increase the friction force between the grouting galvanized tube and an anchor rod hole compared with traditional outer threads, and cotton yarns are frequently wound on the outer portion after the grouting tube is inserted in the anchor rod hole. According to the grouting galvanized tube, the gap among the grouting pipe, the steel wires and the anchor rod hole can be filled with the cotton yarns through the structural design, the friction force between the grouting tube and the anchor rod hole can be effectively increased, the grouting tube is prevented from being ejected out after bearing pressure, and the strengthening effect is excellent.