Groovepreparation, cleaning before welding and butt welding construction of ther tower were showed.
介绍了坡口加工、焊前清理和上下塔对接施焊进程。
2
This article describes the in-field fabrication process of those steel structures, such as lining, shear, groovepreparation, punching hole, bending, assembling and welding etc.
介绍了火电厂承重钢结构的现场加工制作、划线、剪切、坡口加工、打孔、弯制、拼装及焊接等工艺过程。
3
The invention discloses a compound porous structure of a micro groove and fiber and a preparation method thereof.