华能营口电厂钢结构采用摩擦型高强螺栓连接，为保证其摩擦力，安装前对连接面进行了清理和火焰处理，同时对螺栓进行了丝扣清理和沸煮、浸油处理。在保证螺栓的终紧力矩值的同时，还应注意终紧温度和正常使用温度的温差。当螺栓处理后应尽快完成初拧和终拧 Huaneng Yingkou Power Plant’s steel structure uses friction-type high-strength bolts. To ensure its friction, the connection surface is cleaned and flame-treated before installation, and the bolts are cleaned and boiled and immerged in oil. While ensuring the final tightening torque of the bolt, it is also necessary to pay attention to the temperature difference between the final tight temperature and normal use temperature. When the bolts are handled, initial tightening and final tightening should be completed as soon as possible