1. The appearance of the weld is well formed, the shape is smooth and excessive, the width of the weld should cover the edge of the groove by 2mm, the surface of the weld should not be lower than the surface of the base metal, and the weld reinforcement Δh≤1+0.1b, and not greater than 3mm , (b is the width of the groove after the combination), and the height of the fillet weld leg meets the design requirements.
2. Cracks, incomplete fusion, pores, slag inclusions, and splashes are not allowed on the surface of the weld.
3. The undercut depth of the weld shall not exceed 0.5mm, and the continuous length shall not exceed 10mm. And the total length of the undercut on both sides of the weld shall not exceed 10% of the length of the weld.
4. Non-destructive testing methods, proportions and qualification standards of welds shall be in accordance with drawings and construction standards.
