Tap limit does not guarantee thread limit for the internal thread after tapping.
丝锥精度不能够保证内螺纹的精度。
During tapping in steel crankshafts, the most commonly encountered problems are "mess tooth" and oversize thread, additionally the tap life is very low.
前言：钢质曲轴螺孔攻丝加工中经常出现螺纹烂牙、中径扩大等问题，且刀具寿命较短。
Adopting the new method to female thread machining, high hardness of thread can be acquired, and tap broken cases reduce significantly.
采用振动挤压攻丝新方法对钛合金材料进行内螺纹加工，螺纹表面硬度高，丝锥损坏现象显著减小。
The taper tap can effect different fishing operations when equipped with RH thread or LH thread drill pipes and other tools.
公锥与正、反扣钻杆及其他工具配合使用，可实现不同的打捞工艺。
Our factory has the nineties the world's most advanced high-precision thread grinder, tap grinder, powerful groove grinder, diamond grinding wheel repair machine and thread-based testing equipment.
我厂具有九十年代世界最先进的高精度螺纹磨床、丝锥磨床、强力沟槽磨床、金刚石砂轮修型机床及螺纹检测设备。
The thread rolling tap is made by tool steel or alloy, the precision is H4.
是指用工具钢、合金钢制造的滚牙（或切牙）丝锥，精度为H4。
The thread rolling tap is made by tool steel or alloy, the precision is H4.
是指用工具钢、合金钢制造的滚牙（或切牙）丝锥，精度为H4。
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