1.Elasticity:In some applications, especially when the pipeline is exposed to vibration, earthquake or ground movement subsidence, the flexibility of the pipe material prevents the pipe from breaking. 2.Resistance to cold:CHUANGRON siphon pipeline has anti-freezing performance. When the water in the pipeline is frozen, Ordinary pipeline will freeze and crack, but CHUANGRONG HDPE will not. 3.CHUANGRONG High Density Polyethylene HDPE: Density 951 – 955 kg/m3 The density of polyethylene can be 910 – 960 kg / m3. CHUANGRONG fittings and pipes Weighing 955.29 kg / m3, its characteristics not only have durability. And light weight, very convenient for transportation and installation. 4.Resistance to impact:CHUANGRONG HDPE is also very suitable for installation in. The parking lot and pedestrian zone are indestructible at room temperature. Its impact resistance is very high. Even at extremely low temperatures (down to about -40 ° C). 5.Resistance to abrasion:HDPE is highly abrasion resistant; its extra thick wall provides additional protection. Pipe abrasion resistance is a particularly important factor in branch pipes and sewers, Chimney and ground pipes. HDPE is highly abrasion resistant. 6.Heat expansion:The thermal expansion of HDPE also needs to be considered in the design and installation. As a rule Thumb, for every 50 ° C increase in temperature, 15 mm expansion per meter of pipe can be expected. 7.1)System principle:The working principle of the siphon drainage system depends on the special design of the rainwater hopper implement separation, So that the rain is flowing state in theriser, when the rain reached a certain capacity in the riser, siphonage is generated.In the process of rainfall, due to the continuous siphonage, the whole system is able toquickly rule out water from the roof. Butt Fusion Welding and Electrofusion Welding.

7.2) System composition: The siphon drainage system is mainly composed of rainwater head, fastening systems,polyethylene pipe and the corresponding design software. 7.3) Advantage of system:Compared with the traditional gravity drainage system, the siphon drainage system without slope;less material; the construction are greatly reduced; reduction of pipe diameter;save installation space;pipe has self-cleaning function;design, construction is simple and quick;widely applicable to various purposes buildings. 7.4) Features:1, black PE pipeline uv resistant, ageing resistance, long service life of 50 years.