PVC-U Pipe for Water Supply and Drainage

UPVC (Unplasticized Polyvinyl Chloride) Pipe is a rigid thermoplastic piping material manufactured without added plasticizers. UPVC water supply pipes are designed for pressurized water conveyance, while drainage pipes are designed for gravity-flow systems. These two categories differ in wall thickness, pressure requirements, jointing methods, and applicable technical standards. Pipe selection depends on the intended service conditions, required dimensions, and installation requirements.

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MaterialPVC-U, lead free
Nominal outside diameterDe20 – De630
Pressure class0.63 / 0.8 / 1.0 / 1.25 / 1.6 MPa
StandardGB/T 10002.1 (water), GB/T 5836.1 (drainage)

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Introduction

- - 01 Material Properties
    Physical Properties:UPVC has a typical density of approximately 1.35–1.45 g/cm³, with relatively high rigidity and low flexibility compared with polyethylene.
    
    Chemical Stability: UPVC is resistant to many inorganic acids, alkalis, and salts, but its compatibility with certain organic solvents is limited.
    
    Temperature Characteristics: UPVC is generally used at moderate operating temperatures. Its impact resistance decreases at low temperatures, while its mechanical strength and pressure capacity decrease as temperature rises. The commonly referenced temperature range is -15°C to +60°C, depending on application conditions.
    
    Mechanical Characteristics: UPVC has good tensile strength and stiffness, but its resistance to impact and deformation depends on temperature, material formulation, and operating conditions.

- 02 Advantages of UPVC Pipe
  1. Low Flow Resistance — Save Energy and Operating Costs
  
  The smooth inner surface reduces friction losses during water transportation, helping maintain efficient water flow and reduce pumping energy consumption in pressurized systems.
  
  2. Corrosion Resistance — Reduce Maintenance Costs
  
  UPVC pipes resist rust and electrochemical corrosion, reducing the need for additional corrosion protection and helping lower long-term maintenance costs.
  
  3. Lightweight Construction — Save Installation Time and Labor
  
  UPVC pipes are lighter than many traditional metal pipes, making transportation, handling, and installation easier while helping reduce labor and equipment costs.

- 03 How to Choose the Right UPVC Pipe?
  1. Is Your Project for Water Supply or Drainage?
  
  Choose pressure-rated UPVC pipes for water supply and non-pressure pipes for gravity drainage. These pipes have different design requirements and should not be used interchangeably.
  
  2. What Pressure Rating Do You Need?
  
  For UPVC water supply pipes, a higher pressure rating is not always necessary. The right choice depends on operating pressure, pressure fluctuations, and water temperature. Selecting a suitable pressure class helps ensure safe operation while avoiding unnecessary material costs.
  
  3. How to Choose the Right Pipe Size?
  
  UPVC pipe sizes vary depending on the application. For indoor drainage, common outside diameters include 50 mm, 75 mm, and 110 mm. Residential water supply often uses smaller diameters such as 20–63 mm, while municipal water distribution and agricultural irrigation may require 110 mm, 160 mm, 200 mm, or larger pipes. These sizes are general references; the final selection depends on flow requirements, system design, and applicable standards.

- 04 Manufacturing of Our UPVC Pipe
  Our UPVC pipes are produced through a controlled extrusion process, with attention to material preparation, dimensional accuracy, and product quality. The following video shows our finished UPVC pipes on the production line.

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