Can realize the constant pressure, the two kinds of forming process, can be equipped with pressure maintaining time delay function, adjustable delay time.
可实现定压、定程两种成型工艺，可选配保压延时功能，延时时间可调。
This welding machine has features of simple operation, high efficient production and stepless adjustment for current increase time, current value, current maintaining time and pressure time.
操作方便，生产效率高，具有电流上升时间、电流大小、电流持续时间及加压时间、脉冲频率等参数的无级调节。
To decrease the pressure loss in various parts as far as possible is the basis for maintaining a long stable time and gaining a high recovery in the gas field production period.
气田在开采过程中，各部分压力损失最大可能的降低，是气田有较长稳定期和高采收率的基础。
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