... formwork.can be used omre than 50 times. 1.Spiral steel tie rod assembly is composrd of tie rod ... ,waller plates, nuts, plastic cones and tube.2.Spiral tie rod adopts cold rolled technology, which improve its ... formwork error within 2mm, and cast concrete wall with well proportioned.4.After cast concrete wall, only ... .Easy to use and long service time. spiral steel tie rod assembly work with formwork