相对于型材主体来说，功能块结构比较复杂，准确成型较困难。
Functional block structure is more complicated than the main profile and more difficult to be formed into the needed profile.
工程上，为了使钢管相贯处焊缝均匀，焊接可靠，需要将钢管的焊口准确切割成型。
In engineering, in order to make the weld line even and reliable, it is needed to cut the weld opening accurately.
整线成型主驱动采用一个减速电机加变频控制，速度控制、定长、定位控制准确可靠。
The main drive of the whole line uses a reducer with the frequency conversion to control, the speed control, length setting and the localization control are accurate and reliable.
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