1·The purpose of the pipeline pigging is clear in pipe welding of mud, welding slags sundry, for pipeline caliper and normal operation of pipeline to provide security.
管线清管的目的是清除焊接时留在管道内的泥沙、焊渣等杂物，为管线测径和管线正常运行提供保障。
2·When the line pressure to atmospheric pressure, open the ball tube, check pigging or caliper effect.
当管线内压力降到大气压力时，打开收球筒，检查清管或测径效果。
3·If the ball within the cylinder sediment, and welding slags sundry total volume in not more than 5 litre, pigging qualified.
若收球筒内泥沙、焊渣等杂物总体积不超过5升，清管合格。
4·The experimental and theoretic study of pigging operation of mixed transportation pipeline has important signification for the design and management of mixed transportation pipeline.
混输管路清管操作实验和理论的研究对混输管线的设计及生产管理具有重要意义。
5·The advantages of the electronic location equipments of pipeline pigging are of strong wear resistant property and passing ability, well cleaning efficiency, accurate location and tracking, etc.
本公司生产的电子定位管道清管设备具有耐磨性能强，通过能力强，清理效果好，定位、跟踪准确等优点。