... Co., LtdSpecializing in Cold Drawn seamless steel pipe, torsion spring tube,keyway used for garage door / Garage door tube shaft / Garage door ... way, tubular shaft,garage door shaft,section door shaftApplicationScaffolding pipe, Structure pipe, Fence/Door pipe, Furniture, Low pressure ... 35mm with key way.Tubular shaft,garage door shaft,section door shaft, torsion spring tubeNormal Seaworthy Packing1. ...