ISO 4427-2:2019/Amd 1:2023

Overview

ISO 4427-2:2019/Amd 1:2023 is the latest amendment to the international standard for plastics piping systems used in water supply, drainage, and sewerage under pressure. Specifically focused on polyethylene (PE) pipes, this amendment updates technical specifications to enhance the reliability and performance of PE pipes in critical water infrastructure. Developed by ISO Technical Committee ISO/TC 138, this amendment ensures that polyethylene piping solutions meet evolving industry requirements, safety, and durability standards.

The standard is essential for manufacturers, engineers, and water supply professionals involved in producing or utilizing PE pipes for potable water and pressurized sewerage systems. This amendment clarifies wall thickness values for large diameter pipes (nominal size 1000 mm), contributing to improved design accuracy and compliance.

Key Topics

• Polyethylene Piping Systems: Focused on plastic pipes made from PE materials used for pressurized water supply and sewerage systems.
• Wall Thickness Specifications: Amendment 1 updates values for the wall thickness of nominal 1000 mm size pipes across various standard dimension ratios (SDRs) and pressure ratings.
• Pressure Ratings: Defines nominal pressure (PN) classes for pipes made from PE 40, PE 80, and PE 100 grades, ensuring pipes maintain integrity under different operating pressures.
• Technical Compliance: Provides mandatory minimum and maximum wall thickness values to ensure safety and durability in pressurized environments.
• International Standardization: Developed by ISO/TC 138/SC 2, this document aligns global manufacturing and quality processes for polyethylene pipes.

Applications

The adoption of ISO 4427-2:2019/Amd 1:2023 impacts a wide range of practical applications in the water and wastewater management sectors, including:

• Water Supply Systems: Ensures the quality and safety of PE pipes used to convey potable water in municipal and industrial networks.
• Drainage and Sewerage Under Pressure: Provides standardized specifications for pipes in pressurized drainage systems, reducing failure risks and leaks.
• Infrastructure Development: Supports the design and installation of sustainable and long-lasting piping infrastructure, meeting international regulatory requirements.
• Manufacturing Quality Control: Helps manufacturers maintain consistent production standards and compliance with up-to-date ISO specifications for large diameter polyethylene pipes.
• Engineering Design: Assists designers and engineers in selecting appropriate pipe sizes and wall thicknesses to withstand specific operating pressures.

Related Standards

For comprehensive understanding and implementation of polyethylene piping systems, ISO 4427-2:2019/Amd 1:2023 connects with several other related standards:

• ISO 4427 Series: Covers various parts related to polyethylene piping systems including general requirements, fittings, and components for water supply.
• ISO 138: Addresses plastics pipes, fittings, and valves for fluid transport, applicable to different materials beyond PE.
• ISO/IEC Directives: Provides guidelines on the development and maintenance of ISO standards, ensuring consistency and transparency.
• Industry Standards for Pressure Pipe Systems: Includes local and regional codes that complement ISO standards for water and sewer piping design and installation.

This amendment to ISO 4427-2 reiterates ISO’s commitment to advancing sustainable, safe, and high-performance polyethylene piping systems for global water supply and sewerage infrastructure. By adhering to these updated specifications, stakeholders ensure enhanced pipe reliability and regulatory compliance in critical fluid transport applications.

Keywords: ISO 4427-2:2019 amendment, polyethylene pipes standard, PE piping water supply, pressurized sewerage pipes, PE pipe wall thickness, water infrastructure standards, plastics piping system ISO, PE pipe pressure ratings, polyethylene pipe specifications, international piping standards.