SUNKAI INFORMATION

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Writer:ihyangwu Update time:2003/4/21 上午 09:38:46
HOW
請問螺絲的內六角是如何製造的?
可否特製螺牙後再延伸一一定的直徑長度???
Writer:管理者 Update time:2003/4/28 下午 07:05:09
回復HOW
一般傳統製造法 是先行頭部打頭成型後
  再行二次加工搓牙或輾牙或牙紋切削
   部份特殊品例外 
Writer:Rfp2egjMgD Update time:2015/10/26 下午 04:19:57
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