不得有表面裂纹、未焊透、表面气孔、弧坑和肉眼可见的夹渣等缺陷。焊缝与材

There shall be no defects such as surface cracks, incomplete welding, surface pores, arc craters and slag inclusions visible to the naked eye. The weld and the material should be smooth and excessive, and the shape of the fillet weld should be concave and smooth;

There must be no defects such as surface cracks, unwelded air holes, arc pits and slags visible to the naked eye. Welds and materials should be sleek excessive, angle weld shape should be concave and sleek transition;

There shall be no surface crack, incomplete penetration, surface porosity, arc pit and slag inclusion visible to the naked eye. The shape of fillet weld should be concave and smooth;