Building Drainage & Rainwater Harvesting Systems

WEIPIKE siphonic drainage solutions deliver efficient roof rainwater removal for large-span public buildings, industrial plants, transportation hubs and commercial complexes.

Different from conventional gravity drainage, our system generates full-bore flow via siphon principle. Horizontal pipelines can be installed without gradient, saving pipe materials and offering greater flexibility for architectural layout.  

We provide full technical support including hydraulic calculation, system drawing generation and optimized material lists. Our stainless steel rainwater hoppers precisely control upstream water depth to maintain stable siphonic operation and mitigate roof water load during heavy rainfall.

Core Application Scenarios:  

Pipeline noise greatly impacts indoor living comfort. WEIPIKE silent drainage pipes and fittings adopt multi-layer composite structure and special spiral flow guiding design to optimize the gas-water flow state inside pipelines. 

Our product range covers single-layer ultra-silent pipes, three-layer composite silent pipes, single-vane and double-vane spiral silent pipes. Raw materials including HDPE, FRPP and PP absorb vibration and block noise transmission effectively. The system reduces water collision and restrains pipeline vibration, ideal for high-rise residences, hotels, hospitals and office buildings. 

Multiple connection options are available: press-fit flexible socket, flange connection, electrofusion and heat fusion socket. The connections feature convenient installation and reliable sealing performance.

Core Application Scenarios:  

Against the background of growing water resource constraints, WEIPIKE combines siphonic drainage technology to provide integrated rainwater recycling solutions. Roof rainwater is collected, transported through dedicated pipelines, filtered and stored in underground tanks for secondary utilization. 

Treated rainwater can be used for landscape irrigation, road washing, factory equipment cleaning and non-potable industrial water. It supports projects to meet green building standards, cut municipal water consumption and lower long-term operational expenditure. 

The whole system can seamlessly match our siphonic drainage pipe network, forming a sustainable closed-loop water management scheme suitable for sponge city and low-carbon building projects.

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