Cast iron drainage pipe mainly undertakes the task of rainwater and expressway drainage. Cast iron drain pipe is a kind of external steel pipe formed by adding other additives to high density steel. According to different drainage requirements, the size of pipe holes can be 10mm*1mm-30mm*3mm, and can be evenly distributed in 360 degree, 270 degree, 180 degree and 90 degree. It is widely used in highway, railway subgrade, subway engineering and waste landfill. Drainage areas such as field, tunnel, green belt, sports ground and slope protection caused by high water content, as well as underground irrigation and drainage systems for agriculture and horticulture. It has become the three main products of civil engineering construction (seepage and drainage) in China with soft permeable pipe and plastic blind ditch.
Mainly used in railway bridge drainage, highway bridge guardrail support and engineering and chemical sewage system.
1. Drainage pipe construction shall be carried out in accordance with the design requirements. Drainage pipe shall extend from the bottom of the structure not less than 30 mm, and the longitudinal spacing shall not exceed 4 M.
2. For overpasses and highway bridges, the drainage pipes should not be directly hung under the slab, but can be directly directed to the ground through vertical and vertical drainage pipes.