Plastics piping and ducting systems - systems outside building structures for the conveyance of water or sewage - practices for installation above and below ground ; german version env 1046 : 2001 塑料管道系统.输送水或污水用建筑结构外部系统.地上
Article 19 the term " cables " , as used in these provisions , refers to communications cables and electric cables ; the term " pipelines " refers to the pipe - shaped conveying and transporting installations used for conveyance of water , gas , oil and other substances 第十九条本规定中的“电缆”系指通信电缆及电力电缆； “管道”系指输水、输气、输油及输送其他物质的管状输送设施。
