The utility model provides a steel pipe unloading concatenation frock, include: feeding mechanism, new steel pipe inserts in feeding mechanism, and new steel pipe passes through feeding mechanism propelling movement forward, and new steel pipe passes through piecing devices and the concatenation of anterior root surplus steel pipe, and new steel pipe and anterior root surplus steel pipe concatenation department upper end are equipped with collet chuck, and the anterior root remains the steel pipe lower extreme and is equipped with the cutter, piecing devices overlap including connecting to support, and the joint supports the cover and inserts in new steel pipe and anterior root surplus steel pipe, the middle part is equipped with the location arch outside connecting the support cover, andthe location arch sets up between new steel pipe and anterior root surplus steel pipe, is equipped with the fixed orifices in the joint supports and overlaps. The utility model discloses simple structure, convenient to use, the great material saving of ability improves unloading efficiency, reduction in production cost.