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.
对螺旋埋弧焊钢管在生产过程中产生咬边的原因进行了,出了针对这些原因应取的相应措施。
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.
对螺旋埋弧焊钢管在生产过程中产生咬边的原因进行了,出了针对这些原因应取的相应措施。
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