What are the installation methods of aluminum downspout in Hangzhou aluminum alloy downspout system

　What are the installation methods of aluminum downspout? Its application can be better combined with steel structure, and there are many types of anisotropic elbows and downspouts, which can meet different construction requirements. Compared with ordinary plastic pipes, there is no aging due to thermal expansion and contraction, cracks and frost cracks. Even in the northeast, northwest and other cold areas, there is no frost damage, the service life is relatively long.

　　The installation of the pipe should meet the requirements of the code, such as: high density polyethylene (HDPE) prefabricated pipe segment should not exceed 10m, the connection between the prefabricated pipe segment should be electric fusion, hot melt butt welding or flange connection; Fuse connections should be used on suspended high density polyethylene (HDPE) horizontal pipes and installed with fasteners. The water level should flood the rain barrel. There should be no leakage from the roof around the rainwater tank. For rainwater pipes installed indoors, the water filling test should be carried out by the wholesection method or the section method according to the pipe material and the building height. The height of water injection should reach the upper stormwater outfall of each riser. After 1 hour of water filling test, there should be no water seepage in the pipeline and its joints. After the installation of the color aluminum downpipe, the sealing performance of the system should be accepted to meet the design and specification requirements. Block the storm drain and fill the roof or drain with water.

　　When using high-density polyethylene (HDPE) pipes, the relatively large inspection port spacing should not be greater than a certain size, and the rainwater pipe should be installed in the position specified in the design; The connection between the connecting pipe and the suspension pipe shall use 45° tee; The connection between the suspension pipe and the riser, riser and drain pipe shall adopt two 450 elbows or 900 elbows with R not less than 4D.