Material: Unplasticized Poly(Vinyl Chloride ) Size:full 32mm through 630mm availability Standard: ISO 3633:2002 Colors:white or other colors availability upon request Form Supplied: 4m,6m or other Length availability upon request

® Material: Unplasticized Poly (Vinyl Chloride) © Size: full 32mm through 315mm availability ® Standard: ISO 3633, GB/T 5836 ® Color: white or other colors availability upon request

Roof drainage system is mainly composed of gutter, drop outlet, drainage pipeline and relative accessories. Gutter(also called as rain gutter) is the grooved drainage ditch below eave, used for catching roof rainwater and guiding rainwater down to earth through downspouts. This system can drain rainwater from structure reasonably, then prevent damage to roof, wall and foundation. Rain gutter and accessories can adapt the need for draining roof water on slop roof architecture, and their most roles are to increase service time of architecture. For the roof not installed with rain gutter and accessories, the ground below will produce ditch or plash because of rain drops, which affects coming in and out and causes damage to foundations around architecture. The splashed water drops attach on outside wall of architecture, striping aesthetics. The falling rainwater and snow-water, especially hard rain, will gather to plash in a short time. So it is necessary to set gutter to drain rainwater on roof to outdoor in an organized and systematic way. Otherwise will cause rainwater to flow here and there and affect the life and production activities of people.

Siphon-type drain system takes special rainwater head to absorb the rainwater and forms the full flow status in pipe. With the aid of potential energy due to the drop of architecture and falling water, the minus pressure is obtained in pipe so that the flow in rainwater head or horizontal can be pushed under additional pressure. Above phenomenon is called as siphon. siphon can expedite the flow in drain pipe and drain the roof rainwater more quickly.