longitudinal seam

基本解释

Because of the much thick wall of large capacity boiler drum, the pressed and weld longitudinal seam is used to manufacture the drum shell ring.
由于大容量电站锅炉汽包的壁较厚，所以在汽包筒节制造时常采用压制成两个半圆瓦片再焊接而成的方法。
Type ZH\360 longitudinal seam welder is exclusively used for longitudinal seam welding on flat plates, cylinders, opened boxes of weldable metals.
纵缝焊接机专用于可焊接金属的平板、圆筒、开口箱体等工件的纵缝焊接。
Like the princess line and back line, so in the longitudinal seam for easy to break into shape, but also easy to build like shape and stereo feeling.
像公主线和刀背线，这样在纵向放入的破缝线易于适合体型，也易于造出喜欢的形状和立体感。