torsion spring tube, tension bar shaft,section door shaft 1: O.D ... Co., LtdSpecializing in Cold Drawn seamless steel pipe, torsion spring tube,keyway used for garage door / Garage ... Tubular shaft,garage door shaft,section door shaft, torsion spring tubeNormal Seaworthy Packing1. Bundle packing.2. ... 1" tube shaft with key way: torsion spring tube with keyway, tension bar, keyway used for garage door