corner double seam 锁缝角接接头
double seam welder 双层缝焊机
double seam submerged-arc welded pipe 双缝埋弧焊钢管
double standing seam 双重立式缝
double-seam 双重封罐法
decorative double seam 装饰用双排缝
double-seam bottom lance 双环缝式底枪
A new process of high speed seam welding with secondary rectification for double seam possesses good weld quality, high welding speed, smooth bead and low consumption features.
双缝高速次级整流缝焊是一项新工艺，具有焊接质量好、焊接速度快、焊缝表面光洁及能耗低等优点。
The heating and other technical characteristics as well as procedure parameters are introduced in this paper for bicycle wheel - tyre double seam high speed welding.
介绍了自行车车圈双面双缝高速次级整流缝焊新工艺、新设备，并对其加热特点、技术要点及焊接参数等问题进行了探讨。
Double-seam is the most important link in canning manufacture technical process, and the seam roller is one of the most core and important components on the can seamer.
二重卷边是金属罐制造工艺流程中最重要的环节，卷封滚轮是封罐机上最核心、最重要的零件之一。
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