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        河北龙马直缝钢管JCOE成型设备、LSAW埋弧焊接设备动画FLASH

        1、钢板铣边

        直缝钢管钢板V型坡口铣边

        2、钢板预弯

        钢板预弯

        3、JCOE成型

        直缝钢管JCOE成型

        4、预焊

        双面埋弧焊-预焊

        5、外焊

        双面埋弧焊-外焊

        6、内焊

        双面埋弧焊-内焊
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