UPVC Drainage (ISO 3633)
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UPVC Drainage (ISO 3633)
UPVC Drainage (ISO 3633)
UPVC Drainage (ISO 3633)


1. Product Overview

REHOME PVC-U drainage pipes and fittings are manufactured from high-quality raw materials and processing additives, representing the core product of the company's mature technology. ISO 3633 is the international standard for unplasticized poly(vinyl chloride) (PVC-U) piping systems for soil and waste discharge (low and high temperature) inside buildings.

Compared with cast iron pipes, PVC-U pipes offer an incomparable long service life and superior corrosion resistance. During construction, they are lightweight, making handling, installation, and connection easy. They are widely used in building drainage, sewage, ventilation, and indoor rainwater discharge.




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  • Product Advantages
  • Details
  • Specification

Product Advantages

1. International Standard Certification
ISO 3633 is the international standard for PVC-U building drainage pipes. Compliance ensures that the product meets the technical requirements for building drainage systems in most countries and regions worldwide.

2. High & Low Temperature Resistance
Specifically designed for low and high temperature waste discharge, capable of withstanding temperature variations in domestic wastewater.

3. Superior Corrosion Resistance
Unlike cast iron pipes, PVC-U pipes do not rust or corrode, offering excellent resistance to inorganic acids, alkalis, and salts—suitable for industrial wastewater discharge and conveyance.

4. Long Service Life
Under normal operating conditions, PVC-U pipes have a design service life of 30-50 years, making them an ideal material for building drainage and sewerage.

5. Lightweight and Easy to Install
Weight is only 1/10 that of cast iron. Handling and installation are convenient, improving work efficiency by 40-60% compared with cast iron pipes, significantly reducing project costs.

6. Low Fluid Resistance
The smooth inner wall has a roughness coefficient of only 0.009, ensuring smooth water flow, resistance to blockage, and minimal maintenance.

7. High Impact Resistance
High mechanical strength and excellent impact resistance. The unique additive formula prevents the emission of odors attractive to insects and rodents, avoiding damage from termites and pests.



Full Standard Title

Plastics piping systems for soil and waste discharge (low and high temperature) inside buildings — Unplasticized poly(vinyl chloride) (PVC-U)

Standard Number

ISO 3633:2002 (current valid version)

Application

Inside buildings — soil and waste discharge systems (low and high temperature)

Explicitly Excluded

Buried piping systems

Size Range

Nominal outside diameter 16mm to 400mm

Application Types

a) Domestic waste discharge pipes (including ventilation pipes); b) Rainwater pipes inside buildings

Nominal OD dn (mm)

Pipe Wall Thickness Type A (mm)

Pipe Wall Thickness Type B (mm)

Fitting Wall Thickness e min. (mm)

Socket/Spigot Wall Thickness e₂ min. (mm)

32

—

—

3

2

40

1.8

3.2

3

2

50

1.8

3.2

3

2

63

—

—

3

2

75

1.8

3.2

3

2

80

—

—

3

2.3

82

—

—

3

2.3

90

1.9

3.2

3

2.3

100

—

—

3

2.3

110

2.2

3.2

3.2

2.4

125

2.5

3.2

3.2

2.4

140

—

—

3.2

2.4

160

3.2

4.0

3.2

2.4

180

—

—

3.6

2.7

200

—

—

3.9

2.9

250

—

—

4.9

3.7

315

—

—

6.2

4.7

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