In response to the demand for new, energy-efficient, and efficient construction methods, a spiral rib grouted sleeve made of seamless steel pipe processed by rolling process is proposed. This type of sleeve offers advantages of low cost, simple manufacturing, and easy construction. The spiral ribs produced by the rolling process significantly improve the mechanical interlocking force between the sleeve and the grout. Building upon the research on the performance of traditional grouted sleeve connections, a middle overlap sleeve connection form is introduced. Fourteen specimens of this type are fabricated using spiral-ribbed sleeves and subjected to uniaxial tensile tests to investigate their mechanical properties. Additionally, finite element simulations using ABAQUS are performed and the results are compared and analyzed in relation to the experimental findings. The findings indicate that the sleeve connections with a 10d overlap length exhibit sufficient anchoring performance. The strain in the internal steel reinforcement within the sleeve rapidly decreases with distance from the loading end and increases with external load. Surface strains on the spiral-ribbed sleeve are relatively small, indicating adequate safety redundancy. The axial strain near the steel reinforcement is higher, while the middle section experiences mainly axial tensile strain and the sleeve ends primarily undergo circumferential tensile strain. The finite element simulation results are in good agreement with experimental results, confirming their applicability.