The material flanging thickness of Yunnan butt fastener is greater than that of hollow rivet, so the tensile strength is increased, and the anti-torque rigidity is greatly improved. Compared with the traditional butt fastener, it is safer and more reliable, and the structural strength of the butt fastener is much better than that of the traditional building fastener. The big end is connected with the upper fastener with notch and thrust surface, and the two sub-fasteners are riveted and rotated at any angle. Make fasteners to reduce the number of parts, butt fasteners have substantial characteristics and significant progress.

The butt fastener must have sufficient strength, durability, and certain elasticity, and effectively maintain the reliable connection between the rail and the sleeper. The use of butt fasteners in building construction can ensure the smooth completion of the project quality during construction. In addition, the fastener system is required to have few parts, simple device and easy assembly. Bowl buckle connection is simple, the domestic commonly used building fasteners cast iron production. Therefore, it can be adapted to various planes and facades of buildings and structures with scaffolding. Comparable economy. Simple processing. The small end of the lower fastener in each fastener is connected with the hinge bolt, and the butt fastener consists of two fasteners.

The docking fasteners are fast and light, and the structure is optimized: the fasteners are light, beautiful, comfortable, fast loading and unloading, labor intensity is reduced, work efficiency is improved, and the manufacturing technology is advanced. Due to the use of cold pressing technology, the energy consumption is low in the production process. No pollution, fully in line with the requirements of the national energy saving and emission reduction policy.