清管器最初是一个皮制圆盘式活塞,可刮除运行管线管壁的结蜡。在不增加动力时可明显提高管线流量。对新建管线可清除杂物、积水、焊条头等,大大提高了管线投产的可靠性。因此清管技术及其工具受到石油化工基建和生产部门管道工程师的注意。发展至今又有如下一些更重要的用途。 The pig was originally a leather-disc piston that removed the wax from the wall of the running pipe. Pipeline flow can be significantly increased without increasing power. On the new pipeline can remove debris, water, welding first class, greatly increased the reliability of pipeline production. Therefore, pigging technology and tools are subject to the attention of petrochemical infrastructure and production department pipeline engineers. There are some more important uses of the development so far.