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很多锅炉及压力容器工厂目前都实现了内外环缝自动焊工艺,改变了传统的手工内封底外自动焊的落后面貌。筒体内环
Many boilers and pressure vessel factories have now achieved internal and external seam seam automatic welding process, changing the traditional manual inside the back cover of automatic welding behind the face. Cylinder inner ring