由北京市建筑工程研究院钢筋连接技术研究所研制的“ＧＫ型钢筋等强锥螺纹接头”，在继承普通锥螺纹接头可以预制、操作简单、能连接多种钢筋、可全天候施工等特点的基础上，根据冷作硬化原理，通过新研制的ＧＫ４０型钢筋端头挤压机，使用机械调质的方法，将钢筋锥螺纹接头的 The “GK-type steel bar and other strong tapered thread joints” developed by the Beijing Institute of Civil Engineering and Architecture Reinforcing Steel Connection Technology, inherits the characteristics of ordinary tapered thread joints that can be prefabricated, simple to operate, can be connected to a variety of steel bars, and can be constructed in all weather conditions. In the past, according to the cold work hardening principle, through the newly developed GK40 type steel bar end head extruder, using the method of mechanical quenching, the steel bar