攻丝

• The boss at the bottom of the valve body is regularly tapped at the factory
  阀体底部的凸起部通常在工厂攻丝。
• Fast screwing device in a lathe
  车床快速攻丝装置
• Subland twist drills with cylindrical shanks for holes prior to tapping screw threads
  攻丝前先钻孔的柱柄阶梯麻花钻
• Iso specification for tapping of holes to receive wire thread inserts iso metric threads
  螺纹镶齿金属丝锥孔攻丝规范
• Self drilling tapping screws
  自钻孔攻丝螺钉
• Subland twist drills with cylindrical shanks for holes prior to tapping screw threads
  攻丝前钻孔用圆柱柄阶梯麻花钻
• Hand - held non - electric power tools - safety requirements - drills and tappers
  手持非电动工具.安全性要求.钻头和攻丝机
• Method for comparing metal removal fluids using the tapping torque test machine
  用攻丝扭矩试验机比较金属切削液的方法
• Subland twist drills with morse taper shanks for holes prior to tapping screw threads
  攻丝前钻孔用莫氏锥柄阶梯麻花钻
• Accessoties of single spindle turret automatic lathes . holder for tapping . dimensions
  单轴转塔自动车床辅具.攻丝刀杆.尺寸