Overview
SIST EN ISO 1167-2:2006 defines procedures for preparing test pieces of thermoplastics pipes, fittings, and assemblies for fluid conveyance, particularly for testing resistance to internal hydrostatic pressure. This part of the ISO 1167 series focuses on the correct method for obtaining, measuring, and conditioning extruded or injection-moulded tubular samples prior to pressure testing as outlined in ISO 1167-1. Ensuring consistent preparation of pipe test samples is essential for reliable, repeatable testing and accurate material classification across a wide range of thermoplastics piping systems.
Key Topics
- Preparation Method: Outlines requirements for obtaining test pieces from both extruded and injection-moulded thermoplastics pipes, critical for subsequent hydrostatic pressure testing.
- Dimensional Specifications: Specifies dimensions such as free length and total length for extruded pipes, as well as nominal outside diameters and wall thicknesses for injection-moulded samples.
- Measurement Guidance: Refers to ISO 3126 for precise measurement of wall thickness and outside diameter, ensuring standardization in sample preparation.
- Conditioning Requirements: Details on conditioning test pieces prior to testing, to ensure that results reflect realistic performance in field conditions.
- Test Reporting: Specifies information that must be recorded in test reports, including sample manufacture method and preparation specifics, as required by ISO 1167-1.
Applications
This standard is widely used in the plastics piping industry to guarantee the uniformity and reliability of pressure resistance testing for:
- Water, gas, and industrial fluid transport: Ensures pipes and fittings meet safety and durability requirements for potable, waste, and industrial piping systems.
- Quality control: Essential for manufacturers implementing robust quality assurance protocols in thermoplastics pipe production.
- Material development: Critical for developing, comparing, and certifying new pipe grades and compounds, aiding classification according to long-term performance.
- Third-party certification and product approvals: Used by testing laboratories and certification bodies to standardize the assessment of pipes, fittings, and assemblies.
Standardized preparation of test pieces helps reduce variability, increase comparability of test data, and build trust with regulators and end users regarding oil, gas, and water supply infrastructure.
Related Standards
Understanding and applying SIST EN ISO 1167-2:2006 is most effective when used in conjunction with complementary standards, including:
- ISO 1167-1: General method for determination of resistance to internal pressure, directly referenced for test execution.
- ISO 3126: Details the measurement method for pipe and fitting dimensions, critical for test piece preparation.
- ISO 9080: Specifies extrapolation methods for determining long-term hydrostatic strength of thermoplastics pipes.
- ISO 12162: Describes classification and designation for thermoplastics materials in piping systems, using results from hydrostatic pressure testing.
These related standards together form the basis for comprehensive and reliable performance assessment of thermoplastics piping systems.
SIST EN ISO 1167-2:2006 is a vital component of the international framework for testing and certifying the internal pressure resistance of thermoplastics pipes and fittings. By facilitating standardized preparation of test samples, it underpins quality, safety, and regulatory compliance for modern plastics piping systems in water, gas, and industrial fluid conveyance.
