The periodic in-service inspection of Section IX of the Boiler Code includes weld repairs in cast metal, and pipe welds.
根据锅炉法典第ix节的要求，在使用过程中需要定期进行检查的内容包括，逐渐金属的焊缝，管道焊缝。
The question whether hidden weld in unstiffened overlapped CHS KK-joints is welded or not is not clearly metioned in current code for design of steel structures(GB50017-2003).
KK型圆钢管搭接节点，搭接处隐藏焊缝焊接与否的问题，现行钢结构设计规范（GB50017-2003）未作明确要求。
The intention was to provide references for recognition of PA images of weld inspection and result evaluation. in accordance with the referencing code requirement.
目的是依据规范为焊缝相控阵超声检测图像识别和结果评定提供借鉴。
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