Overview
ISO/TR 27165:2012 provides essential guidance on the definitions of wall constructions for thermoplastics pipes used in both pressure and non-pressure piping systems. Developed by the International Organization for Standardization (ISO), this technical report addresses the need for standardized terminology in the rapidly evolving field of plastic piping systems. By consolidating definitions from existing product standards and offering a framework for the drafting and revision of new deliverables, ISO/TR 27165:2012 ensures consistency, clarity, and reliability in specifying and manufacturing thermoplastics pipes.
Key Topics
- Materials and Compounds: Clarifies terminology concerning thermoplastics materials and compounds, establishing a common language for formulations and compositions.
- Pipe Wall Constructions: Defines categories and subcategories, including:
- Coated Pipes - Pipes with removable outer protection.
- Solid Wall Pipes - Either single or multilayered pipes with unified material properties.
- Multilayer Pipes - Pipes comprised of different materials/layers for enhanced performance.
- Structured Wall Pipes - Pipes with specialized constructions for improved structural capabilities.
- Double Wall Piping Systems - Pipes with integrated secondary containment for leak prevention.
- Layer Functions: Explains the utility of each layer in pipe construction (e.g., stress/strain design, specific function such as permeability barriers or UV resistance).
- Dimensional Ratios: Introduces standard measurements like the nominal outside diameter to wall thickness ratios for both metallic and polymeric layers.
Applications
ISO/TR 27165:2012 is highly beneficial across several sectors where thermoplastic pipes are specified, manufactured, or installed:
- Product Standardization: Manufacturers and standardization committees can use the unified terminology and definitions when drafting or revising product standards, ensuring interoperability and market alignment.
- Pressure and Non-Pressure Pipe Systems: Relevant in water supply, wastewater, gas distribution, and industrial applications where diverse wall constructions influence performance.
- Quality Assurance & Inspection: Offers a reference for quality control processes, facilitating consistent evaluation of pipe wall construction during production and installation.
- Regulatory Compliance: Assists in meeting international compliance requirements when referencing definitions for product certification or market entry.
- Technical Training: Aids in the education and training of engineers, designers, and installers to ensure accurate understanding of pipe wall constructions, thereby reducing errors and improving system reliability.
Related Standards
Professionals working with ISO/TR 27165:2012 should also be familiar with the following related international standards:
- ISO 472:1999 - Plastics - Vocabulary: A comprehensive glossary of terms used in the plastics industry, referenced for baseline definitions.
- ISO 1043-1:2011 - Plastics - Symbols and abbreviated terms - Part 1: Basic polymers and their special characteristics: Provides standardized symbols for polymers, facilitating communication and documentation.
- Other Relevant Pipe Standards: Depending on application context, consulting additional standards for specific thermoplastics pipe types or installation practices may be necessary.
Practical Value
By using the definitions and guidance provided by ISO/TR 27165:2012, stakeholders in the plastics piping systems industry can:
- Encourage effective communication across international teams and supply chains
- Avoid ambiguities in technical documentation and product labeling
- Streamline the process of updating existing standards or developing new ones in line with international best practices
- Facilitate innovation by providing a clear framework for new wall constructions within the recognized categories
For anyone involved in the design, manufacture, specification, or regulation of thermoplastics piping systems, ISO/TR 27165:2012 is an indispensable reference for achieving precision and clarity in defining wall constructions for pipes.