Research on testing method and equipment of drilling wire rope;
钻井钢丝绳检测方法与装置的研究
The discussion on necessity of quantitative evaluation and nondestructive testing for the security of drilling wire ropes;
钻井钢丝绳安全性定量评定与无损检测技术进展
The life time of drilling wire rope on site is determined on,besides their built-in quality and their correct use method,the selection of their structure.