When the control valve at the end of center pipe was widely open, the pipe failure was mainly caused by high-temperature oxidation.
当中心管末端调节阀开大时，中心管损坏原因主要为高温氧化；
Through the deep investigation and analysis of the drilling pipe failure, the main factors causing drilling pipe failure are found out.
通过对钻杆失效问题的深入调查和分析，找出引起钻杆失效的主要原因。
The drill pipe failure assessment demonstrates the longitudinal brittle fracture will be avoided when the transverse impact power of the material is over 80J.
应用钻杆失效评估技术研究表明，横向材料冲击功大于80J将避免钻杆内螺纹接头纵向脆性开裂失效。
The heat pipe failure, lower heating air temperature, higher flue gas emission of the furnace in operation are analyzed and improvement measures are suggested.
对实际运行中存在的热管失效、热空气温度偏低、排烟温度偏高等问题进行了分析，并提出了相应的改进措施。
The heat pipe failure, lower heating air temperature, higher flue gas emission of the furnace in operation are analyzed and improvement measures are suggested.
对实际运行中存在的热管失效、热空气温度偏低、排烟温度偏高等问题进行了分析，并提出了相应的改进措施。
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