下管機設備:下管機在一步法生產線中主要起到下成品管的作用,機組運行時通過變頻調速,可以實現多段速運行,快速下成品管,與撥管器配套使用可以實現快速下成品管。 The pipe laying machine :The pipe laying machine mainly plays the role of laying the finished product pipe in the one-step production line. When the unit is running, it can realize multi-stage speed operation and fast laying of the finished product pipe through frequency conversion and speed regulation, and can realize