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优点 1.结构简单、对称,铆接时无冷作硬化,因此钉杆易于均匀镦粗并与钉孔形成良好的干涉配合,故具有良好的抗疲劳性能和密封性能。
Advantages 1. The structure is simple and symmetrical, no cold work harden when riveting, so the shank is easy to upset evenly and form a good interference fit with the nail hole, so it has good fatigue resistance and sealing performance.