Economical, Light weight and functional, Crab 25 Stair Tower is suitable for all temporary access on your erection, more flexible and safe, can be lifted up and transferred to the other Stair Tower can be linked by gangway truss to connect with buildingIf you give us your constrction size, the bearing capacity or the construction can decine the specification and the quantity for we are pleasure to afford you the technique support any time if you need Jiuwei Industrial