Fasteners are intermediate connecting parts connecting rails and sleepers. Its function is to fix the steel rail on the sleeper, maintain the gauge and prevent the vertical and horizontal movement of the steel rail relative to the sleeper. On the track of concrete sleeper, due to the poor elasticity of concrete sleeper, the fastener shall also provide sufficient elasticity. For this reason, the fastener shall have sufficient strength, durability, and some elasticity, and effectively maintain the reliable connection between the rail and the sleeper. In addition, it is required that the fastener system has fewer parts, simple installation and easy disassembly.
Steel fasteners are generally divided into cast steel fasteners, steel plate stamping and hydraulic fasteners. The production process of cast steel fasteners is roughly the same as that of cast iron, while steel plate stamping and hydraulic fasteners are made of 3.5-5mm steel plates through stamping and hydraulic technology. Various properties of steel fasteners are superior, such as breaking resistance, sliding resistance, deformation resistance, peeling resistance, rust resistance, etc.
At present, the manufacturers of cast iron fasteners are concentrated in Cangzhou, Hebei, with a market share of about 80%; The market share of steel fasteners is about 5-10%, and the main manufacturers are distributed in Hebei, Chongqing, Xinjiang and other places.
Chengda mold manufacturers urge themselves to continuously improve their research and development expertise to meet customer expectations, and modestly hope that they can grow together with the industry. We have the essence of technology, professional knowledge and perfect management system. Our members work together to achieve "customer satisfaction, and the value of talent". At this stage, we are successful and have laid a sustainable foundation.