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用钢绞线和高强钢丝束制作的预应力筋,具有张拉应力高、柔软易形成曲线、不需冷?、长度很长不用接头、张拉力可随预应力?数量不同而在很大范围内变化等优点,在国外得到广泛应用。近年来,随着我国能源、交通、水利工程的发展,需要一整套规格品种齐全范围宽广、工艺和机具设备配套、使用安全方便的预应力张拉锚固体系,同时冶金系统中钢绞线和高强钢丝生产条件逐步改
Prestressed tendons made of steel strands and high-strength steel wire bundles have high tensile stress, are soft and easy to form, do not need cold, and have a long length without joints. Tensile force can vary widely with the amount of prestressing force. Internal changes and other advantages have been widely used abroad. In recent years, with the development of energy, transportation, and water conservancy projects in China, a complete set of pre-stressed tension anchoring systems with a wide range of specifications, complete sets of process and machine equipment, and safe and convenient use are required. At the same time, steel strands and high strengths are used in metallurgical systems. Steel wire production conditions gradually changed