cold-drawing seamless pipe 冷拔无缝钢管 ; 冷拉无缝钢管 ; 冷拔钢管
copper pipe drawing 铜管拉伸
Non-mandrel pipe-drawing 无芯棒拔管
structure of pipe-drawing mill 拔机结构
The company has managed to thread a long, thin tube into the broken pipe, but that is only drawing off a fraction of the flow.
该公司已把一根长而细的软管塞进断裂的立管里，但这只能抽吸微量漏油。
He never stopped drawing at his pipe.
他不停地抽着烟斗。
The mechanical status of nutted rod in drawing pipe with short mandrel rod is analyzed, the analysis basis for the dimensions design of nutted rod offered.
文章分析了短芯棒拉拔管材时拉杆的受力，并对拉杆的尺寸设计提供了分析的依据。
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