Steel tube wall thickness accuracy 钢管壁厚精度 ; 钢管壁厚精度 Tube diameters/wall thickness 管径/壁厚 .
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孔型修改后，钢管壁厚精度降低，力能参数有所升高。
After rolled in changed groove, wall thickness uniformity decreases, and rolling pressure and electric current increase.
建立工艺过程自动控制系统提高周期轧管机轧制的钢管壁厚精度。
Wall-thickness accuracy of steel tubes rolled on a pilger mill can be improved with the automatic process control system established.
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