If the weld cap is not machined or ground flat the examination shall be performed from the base metal on both sides of the weld cap in both weld axis direction .

如果 焊道未经机加工或未磨平，则应从焊道两侧母材上沿两个焊缝轴向进行检验。

The results show that the nail-shape weld consists of two parts namely nail-weld cap and nail-weld body . The form mechanism of the nail-weld cap is different from the nail-weld body .

研究结果表明，钉形 焊缝由钉子 帽和钉子本体组成，二者的形成机制不同。

The pipeline girth weld is composed of different passes such as the root pass hot pass filler and cap passes etc.

管道环 焊缝是由根焊、热焊、填充 焊、 盖面 焊等不同焊道组成。