are welded with tube sheets vertical 怎么理解? position: flat (asme ix lg/lg rotated ) to facilitate shielding. the contractor shall approve any other positions which shall be subject to a separate weld procedure qualification. tube end welds of heat exchangers are frequently welded with tube sheets vertical. 问题: 1. rotated---旋转 2、 换热器的管端焊接通常是管板垂直施焊---管板垂直,换热管就是水平的了,反之如想让换热管垂直的话是很难操作的,因为换热管大都很长的,还是水平操作方便些。 查看更多