压力管道由于其数量大,距离远,敷设方式特殊(有的在高空,有的在地下),大多数均有保温层或防腐层,并且所用材料种类繁多等。这就给压力管道的监控、检验和管理等带来比锅炉压力容器更为复杂的特殊性。本文简要介绍德国对新建气体压力管道的压力试验方法、要求及各种方法适用条件等。1 一般要求所有管道投运前都应进行清洗。以水为介质进行压力试验时,试验结束后应干燥;对重要的输送管道特别是以压力容积测量法进行压力试验时,应采用校准管道猪;以工作介质进行压力试验时,应注意防止介质 Due to its large number of pressure pipelines, the distance, the laying of special (some in the high-altitude, and some in the ground), most of the insulation or coating, and a wide range of materials used and so on. This gives the pressure pipe monitoring, inspection and management than the boiler pressure vessel more complex special. This article briefly introduces the pressure test methods and requirements of Germany’s new gas pressure pipeline and the applicable conditions of various methods. 1 General requirements All pipelines should be cleaned before they are put into operation. When water is used as the medium for pressure test, it should be dried after the test is finished. When important pressure is measured on the pipeline, especially for pressure test, the calibration pipe pig should be adopted. When working pressure test, the medium