| 摘要 |
A lock includes a lock body, which has a core holding hole in a middle portion, and a lock core fitted in the core holding hole; the lock body has several pin holes on a periphery portion thereof; saw-resistant pins are inserted in the pin holes of the lock body respectively to protect the lock body from being damaged with tools such as a saw; the saw-resistant pins have already undergone heat treatment so as to have increased strength.
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