The purpose of prebending process of longitudinal submerged arc welding pipe production line is introduced;character of roller prebending and mould press type prebending is analyzed.

螺旋埋弧焊钢管在生产产生咬边的原因进行了分析,提出了针这些原因应采取的相应措施。

Utilized this method to segmentalize the image of oil derrick arc welding robot welding line gets up the good effect.

将该方法石油井架弧焊机器人焊缝图象的识别起到很好的效果。