Shoes are arranged either a rigid type, for example, in the form of a package of rails, or an elastic type, the design of which is most often composed of two steel plates 10-12 mm thick with a laying between them of oak or pine boards.
Shoes are arranged either a rigid type, for example, in the form of a package of rails, or an elastic type, the design of which is most often composed of two steel plates 10-12 mm thick with a laying between them of oak or pine boards.
