Structural main beam: steel plate cold bending U type groove plus middle vertical rib plate combination.

结构主梁：钢板冷弯U型槽加中幅立筋板组合。

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Adopting movable vertical rib plate welding process can not only prevent welding deformation but also enhance working efficiency evidently.

提出的采用活动式立筋板焊接操作工艺不仅可以防止焊接变形，而且明显提高工效。

youdao

Adopting movable vertical rib plate welding process can not only prevent welding deformation but also enhance working efficiency evidently.

提出的采用活动式立筋板焊接操作工艺不仅可以防止焊接变形，而且明显提高工效。

youdao