Overview
EN ISO 12628:2022 - published by CEN and identical to ISO 12628:2022 - specifies methods for measuring the geometric properties of preformed pipe insulation used in building equipment and industrial installations. The standard covers products supplied as one piece, half sections or segments and defines equipment, specimen conditioning and step‑by‑step procedures to determine dimensions, squareness and linearity of thermal insulating products.
Key topics and requirements
- Scope and applicability: Applies to thermal insulating products for building and industrial installations, replacing EN 13467:2018 and consolidating earlier editions.
- Defined terms: Includes precise definitions for circumference, outside diameter, inside diameter, length, thickness, thickness uniformity, deviation from squareness, deviation from linearity and circular segment chord.
- Test apparatus: Specifies measurement equipment for circumference, diameters, thickness, length, squareness and linearity.
- Test specimens and conditioning: Describes specimen sizes, number of samples and environmental conditioning before testing.
- Measurement procedures: Stepwise methods for measuring:
- Circumference, outside and inside diameters, wall thickness and inner chord
- Length and circular segment chord
- Deviation from squareness (end squareness)
- Deviation from linearity (straightness of shell)
- Calculation and expression of results: Rules for calculating dimensions, thickness uniformity and reporting maximum deviations.
- Accuracy and reporting: Guidance on measurement accuracy and mandatory test report content.
Practical applications and users
EN ISO 12628:2022 is relevant for:
- Manufacturers - for quality control, production checks and product development to ensure dimensional conformity.
- Test laboratories - to carry out standardized geometrical tests and produce comparable data.
- Specifiers and architects - to reference reliable dimensional criteria in product selection and tender documents.
- Installers and contractors - to verify fit and compatibility of preformed insulation on site.
- Certification bodies and procurement teams - for conformity assessment, acceptance checks and contract compliance.
Typical uses include incoming inspection, batch acceptance testing, R&D validation of new insulation shapes, and verification of preformed shells for piping systems in HVAC, process plants and industrial installations.
Related standards
- EN 13467:2018 (superseded by EN ISO 12628:2022)
- ISO 12628:2022 (identical international text)
- Technical committees: ISO/TC 163 and CEN/TC 88 (relevant for thermal insulating materials)
Keywords: EN ISO 12628:2022, preformed pipe insulation, thermal insulating products, dimensions, squareness, linearity, insulation testing, building equipment, industrial installations.