Disclosed is a grout sleeve for steel bar connection. A sleeve body (22) is made of a seamless steel tube and is provided with a grout inlet (23) and a grout outlet (24) at two ends, respectively, and a grooved line (21) on an inner wall. The grout sleeve has good resistance to tension, shear and compression, and can be made into a full-grout sleeve, a threaded half-grout sleeve or a cold extrusion half-grout sleeve.
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