中孔铆钉不可能两头都是半圆行的,除非工作完成了才能形成两头都是半圆形的,铆接的话有气动的,手动的,脚踩的,有自动的,看生产量有多少,选择不同的铆钉机,如果不是很多量,买一台手压的,几十块钱就搞定。

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