SIST EN ISO 12162:2010 PDF

Name: SIST EN ISO 12162:2010 — Thermoplastics materials for pipes and fittings for pressure applications - Classification, designation and design coefficient (ISO 12162:2009)
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Thermoplastics materials for pipes and fittings for pressure applications - Classification, designation and design coefficient (ISO 12162:2009)

Название (английский):

SIST EN ISO 12162:2010

Thermoplastics materials for pipes and fittings for pressure applications - Classification, designation and design coefficient (ISO 12162:2009)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 15
Дата публикации:: 11 февраля 2010 г.
ICS:: 23.040.20
Технический комитет:: PCV - Plastic pipes, fittings and valves

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Описание (английский):

ISO 12162:2009 establishes the classification of thermoplastics materials in pipe form and specifies the material designation. It also specifies a method for calculating the design stress. It is applicable to materials intended for pipes and fittings for pressure applications.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

EN ISO 12162:2009 - Thermoplastics materials for pipes and fittings for pressure applications - defines how thermoplastic pipe materials are classified, designated and used to calculate design stress for pressure applications. The standard establishes a material classification based on long‑term hydrostatic strength, specifies the minimum required strength (MRS) designation, introduces the categorized required strength (CRSθ,t) for other temperatures/times, and sets principles for the design coefficient (C) used to derive allowable design stresses.

Key Topics and Requirements

MRS classification: Materials in pipe form are classified by the 97.5% lower confidence limit of predicted long‑term hydrostatic strength (σLPL) at 20 °C and 50 years, rounded down to the next R10 or R20 preferred number. The MRS classification number = 10 × MRS (MPa). Example designation: PVC‑U 250 (MRS 25 MPa).

CRSθ,t (categorized required strength): CRSθ,t values allow design at temperatures/times other than 20 °C/50 years. CRS values are derived from σLPL at the chosen temperature θ and time t and rounded to R10/R20 series. CRS is not intended for applications with varying temperature profiles (see ISO 10508).

Design coefficient (C and Cmin): A design coefficient >1 accounts for service conditions and effects not covered by σLPL. Product (system) standards specify C; EN ISO 12162 gives minimum design coefficients (Cmin) for common thermoplastics (examples include PE, PP, PVC types, PVDF, ABS, PA11/12, PPSU).

Design stress calculation:

Based on MRS: σs = MRS / C
Based on CRS: σs,θ,t = CRSθ,t / C Maximum allowable design stress is normally calculated using Cmin unless the product standard requires otherwise.

Normative references: ISO 9080 (long‑term hydrostatic strength extrapolation) and ISO 1043‑1 (polymer symbols) are integral to application.

Practical Applications

Selection and specification of thermoplastic materials for pressure pipes and fittings (water, industrial fluid transport).

Determining allowable stresses for design and system engineering using material MRS or CRS values.

Lab testing and certification workflows that generate σLPL data used in MRS/CRS classification.

Basis for product/system standards that set application‑specific coefficients and additional property requirements.

Related Standards

ISO 9080 - Determination/extrapolation of long‑term hydrostatic strength

ISO 1043‑1 - Polymer symbols and abbreviated terms

ISO 10508 - Guidance for piping systems with temperature profiles

EN ISO 12162:2009 is essential for consistent, reliable classification and safe design of thermoplastic pressure piping systems.

SIST EN ISO 12162:2010 PDF

Abstract

Похожие стандарты

Overview

Key Topics and Requirements

Practical Applications

Who Uses This Standard

Related Standards

Технические детали

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SIST EN ISO 9080:2012

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ISO 1043-1:2011/Amd 1:2016

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