介绍了非开挖钻杆管端加厚生产线自动控制系统的设计。
The design of non-dig drill pipe end-upsetting product line autocontrol system were introduced in this paper.
研究表明，在钻杆管端加厚过程中所形成的内加厚过渡带的形状对钻杆的使用寿命有显著影响。
Research shows that fatigue life of drill pipe was influenced by the geometric shape in intermediate belt formed during the end upsetting process.
研究表明，在钻杆管端加厚过程中所形成的内加厚过渡带的形状对钻杆的使用寿命有显著影响。
Research shows that fatigue life of drill pipe was influenced by the geometric shape in intermediate belt formed during the end upsetting process.
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