The YDT type lifting and pushing jack is used in the prestressing construction of the pretensioning method, the pedestal tensioning prestressing tendons or box culverts push, top lift and replacement of bridge supports, etc.
The unique concave-convex groove design at the interface of the cylindrical wood formwork makes the joints tightly combined to prevent running and leaking, which makes the concrete stripping film fast and beautiful, while also stabilizing and strengthenin
PPR is the abbreviation of tripropylene polypropylene, also known as random copolymer polypropylene tube, which adopts heat welding method, has special welding and cutting tools, and it has the properties of high plasticity and high cost effective. With t