This consists for the most part in straightening up, cleaning, and, on thicker plates above 5/16 in vee-ing the edges . 主要是矫直,清选,对于厚度超过516英寸的金属板,还需将焊边做成V形坡口。
These attachments were considered secondary components, so no weld quality control has been imposed on the groove weld splice . 这些附连件被看作是次要的部件,所以在这种坡口焊接中没有进行焊接质量控制。
Weldability testing - method of y - groove cracking test 型坡口焊接裂纹试验方法
First the pipe facing machine is inserted into the pipe end 首先将管道坡口机插进管端。
Two pfms are normally used on major pipeline projects 大多数管道工程通常使用两个坡口机。