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