Bolt free invasive, not use gas cutting reaming, with cutter knife hole, the holes need to make amendments lamellar close to prevent iron into joints and hole cutter wheel machine after use to remove the burr hole, and to remove iron.

 
  • 螺栓不能自由穿入時(shí);不得用氣割擴孔;要用絞刀絞孔;修孔時(shí)需使板層緊貼;以防鐵屑進(jìn)入板縫;絞孔后要用砂輪機清除孔邊毛刺;并清除鐵屑.
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