We are professional manufacture and exporter of all sizes of screw tie rod for construction.The normal type is 10/12mm,15/17mm,20/22mm with material of Q235 or 45# steel,also the hot rolled tie rod ranges from 18mm to 40mm for high strength requirements for European market which can reach to more than 1000KN.We have more than 10 tie rod making machines to meet your quick delivery demand.And also we have techniciens to design the screw size for you to mach the nut you need exactly.Please view more products by:www.formworkscaffolding.cn AND send me email by: riozhang@baisongroup.com