Tubing thread is available for API tubing threads and TM threads.
油管螺纹可采用API油管螺纹，或TM螺纹。
The gluing mechanism of API round thread casing and tubing is analyzed.
分析了API圆螺纹油套管发生粘扣的基本过程及机理。
With the continuously improvement of the production and manufacture technology of tubing and casing, current API 5c3 model can not predict the actual casing strength.
随着套管制造工艺的不断改进和制造水平的显著提高，现有的A PI 5c3模型已不能正确地预测套管的实际抗挤强度。
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