YDG Series push jack fully into account in the design of objects being pushed not on the same axis with the jack, pushing the piston head has a correction device, the piston guide part of the targeted special design to ensure the durability of long stroke jack , long-life use. For use: Culvert push, push box culvert, pre-tensioned pedestal tension, the level of other large loose pieces push. The company can produce various specifications according to customer needs the size of the product.