Hangzhou zhejiang work tool co., LTD. Is a industry and trade into an organic one, is the largest professional production company of threadcutting tools.
杭州浙工工具有限公司集工、贸一体，是国内最大的专业生产螺纹切削工具的企业之一。
2
In cutting experiments, it can be observed and measured that the chip thickness, the tool wear, the screw thread teeth, and so on.
在切削实验中，可对切屑厚度、刀具磨损及螺纹等的形貌进行观察并测量其尺寸。
3
The box taps is a special external toolcuttingthread and fishing externally from dropped object such as tubing, drill pipe.