1. SY/T5561-2008 Drill pipe. Oil and Gas Industry Standards of China [in Chinese].
2. LI He-lin, Li Ping-quan, Feng Yao-rong. Petroleum drill string failure analysis and prevention. Beijing: Petroleum Industry Press; 1999. p. 122–37 [in Chinese].
3. WANG Guang-sheng, Shi Hong. Defect analysis in metal heat treatment. Beijing: Mechanical Industry Press; 2007. p. 100 [in Chinese].
4. Chinese mechanical engineering society of heat treatment. Heat treatment quality control and testing, Heat treatment handbook vol. 4. Beijing: Mechanical Industry Press; 2008. p. 270 [in Chinese].