In technology research focal point should put in weld become type, weld mechanics performance and single surfaceweld two-sided shape root weld 3 aspects.
在工艺研究中，重点应放在焊缝成型、焊缝力学性能及单面焊双面成形根焊三个方面。
2
Surface imperfections, such as slivers, scabs, burrs, weld splatter, and gouges, shall be removed by grinding.
表面瑕疵，例如碎片，烧痕，焊渣，砂眼应用磨光机打磨。
3
A passivation procedure can be modified to deal with a variety of soils, surface finishes and weld area conditions.