通过生产实践,阐述成品油长输管道进行定期清扫的必要性。文章详细地介绍了自制Dg150发讯式清管器的结构、性能和在输油生产中所取得的显著经济效果。 Through the practice of production, elaborate the necessity of regular cleaning of long-distance oil product pipeline. The paper introduces in detail the structure, performance and the remarkable economic results achieved in the oil production of the homemade Dg150 signaling pipeline pig.