Those pipe are widely used in sewer, electricity and tele-communication cables, drainage for airport and railway projects irrigation pipes, etc.

电缆导管、机场道路和铁路排水管、低孔灌溉输水管。

youdao

Those pipe are widely used in sewer, electricity and tele-communication cables, drainage for airport and railway projects irrigation pipes, etc.

电缆导管、机场道路和铁路排水管、低孔灌溉输水管。

youdao