Drainage Pipe
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Drainage Pipe Manufacturer in China
‌Drainage pipe are pipes used to discharge domestic sewage, rainwater, and industrial wastewater. They are usually made of materials such as PE, HDPE, and PP, and have specific pipe diameters and slope designs to ensure that the liquid can flow smoothly by gravity or external force. Their function is to guide the accumulated water and sewage inside or outside the building to the designated discharge location to avoid the impact of accumulated water on the environment, building structures, and people’s lives.
Drainage Pipe

Indoor drainage pipe
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rainwater collection drainage pipe
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municipal drainage pipe
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Key Features of HUALIN Drainage Pipe
The density of our drainage pipes is much lower than that of metal and concrete, which significantly reduces transportation and installation costs. During construction, a single person can carry and install them, greatly improving engineering efficiency. They are chemically stable, have excellent acid and alkali corrosion resistance, have a service life of more than 50 years, and require low maintenance. In addition, plastic drainage pipes consume low energy in production and are recyclable, which is in line with the concept of green environmental protection. They are available in a variety of specifications and models, from household drainage to municipal pipe network construction, and products of different pipe diameters and wall thicknesses can meet diverse needs, combining practicality and economy.
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Customization Service from HUALIN
In terms of specification customization, we can provide multiple pipe diameters from DN20 to DN1200 based on parameters such as drainage flow and laying space. The wall thickness can also be adjusted as needed to ensure that the pressure and flow rate requirements of different scenarios such as residential, municipal, and industrial are met; in terms of materials, corrosion-resistant plastic materials such as PE and HDPE are selected according to different media characteristics. For example, low-temperature-resistant HDPE is more suitable for rainwater pipes in cold areas. In addition, special function customization is also supported, such as adding antibacterial agents to achieve antibacterial and deodorization, embedding reinforcing materials to improve pressure resistance, or designing special interfaces to adapt to complex installation environments.
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HUALIN Drainage Pipe Applications Explored


HUALIN drainage pipes are widely used in many fields due to their light weight, corrosion resistance, and easy installation. In building water supply and drainage systems, they are the “main force of drainage” for homes and commercial buildings, connecting sanitary appliances in areas such as bathrooms and kitchens to safely and efficiently discharge domestic sewage, while reducing drainage noise interference with good sound insulation performance; in municipal engineering, plastic drainage pipes are often used in urban rainwater collection and discharge pipe networks. With excellent weather resistance and impact resistance, they ensure smooth drainage in extreme weather and avoid urban waterlogging; in the industrial field, for corrosive wastewater generated by industries such as chemical and food processing, acid- and alkali-resistant special plastic drainage pipes can operate stably for a long time to prevent pipeline leakage and environmental pollution; in agriculture, plastic drainage pipes are used in farmland irrigation drainage systems and greenhouse drainage to regulate soil moisture and help crops grow healthily; in addition, in special scenarios such as underground integrated pipe galleries and tunnel projects, plastic drainage pipes are light, easy to install, and have strong sealing properties to effectively remove accumulated water and ensure the safety of engineering structures, becoming an ideal choice for fluid transportation in multiple industries.