plastic conduit meaning in English

塑料管道
硬质塑胶管

Boxes and box covers of plastic conduits
塑料接线盒和盒盖
Fittings for pliable plastics conduits
挠性塑料导管配件
Foundation ditch open drainage and plastics conduit well unified drainage
基坑明排和塑料管井综合排水施工技术
Pliable plastics conduits
挠性塑料导管
Code for construction and acceptance of buried telecommunication plastic conduit engineering in city area
城市地下通信塑料管道工程施工及验收规范