SIST ISO 7268:2001
(Main)Pipe components -- Definition of nominal pressure
Pipe components -- Definition of nominal pressure
Gives the definition of nominal pressure when applied to components fo a metallic piping system, and states two series of PN ratings for use with these components.
Tuyauterie -- Définition de la pression nominale
Cevne komponente - Definicija imenskega tlaka
General Information
- Status
- Published
- Publication Date
- 31-Aug-2001
- Technical Committee
- TLP - Pressure vessels
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 01-Sep-2001
- Due Date
- 01-Sep-2001
- Completion Date
- 01-Sep-2001
Relations
- Amended By
SIST ISO 7268:2001/AMD 1:2001 - Pipe components - Definition of nominal pressure - Amendment 1 - Effective Date
- 06-Jun-2022
- Effective Date
- 12-May-2008
- Parent
SIST ISO 7268:2001/AMD 1:2001 - Pipe components - Definition of nominal pressure - Amendment 1 - Effective Date
- 18-Apr-2008
Overview
ISO 7268:1983 - "Pipe components - Definition of nominal pressure" specifies how the term nominal pressure (PN) is to be used for components of metallic piping systems. The standard defines PN as a numerical designation relating to pressure that provides a convenient round-number reference. It establishes the intent that equipment sharing the same nominal size (DN) and PN designation will have matching mating dimensions for their end connections.
Key topics
- Definition of nominal pressure (PN): PN is a rounded numerical designation for reference to pressure ratings of pipe components.
- Mating dimensions: Components with the same DN and PN are intended to have compatible mating dimensions appropriate to the type of end connection.
- Permissible working pressure: The actual allowable working pressure depends on material, design and working temperature and must be selected from the pressure/temperature rating tables in the corresponding standards.
- Two PN series for flanges: The standard states two series of PN ratings to be used with flanges. As published in ISO 7268:1983:
- Series 1: PN 2.5, PN 16, PN 20, PN 50, PN 100, PN 150, PN 250, PN 420
- Series 2: PN 10, PN 6, PN 25, PN 40
- Standards management note: Series 1 ratings are the basic set; Series 2 ratings are to be monitored for possible deletion, with PN 40 noted as having limited application.
Applications
ISO 7268:1983 is practical for professionals involved in design, manufacture, specification and maintenance of metallic piping systems:
- Piping and flange manufacturers - to ensure dimensional compatibility across components specified by PN and DN.
- Mechanical and piping engineers - to reference nominal pressure when selecting components and verifying mating dimensions.
- Procurement and specification writers - to standardize purchases and written specifications using PN designations.
- Inspection and quality assurance - to confirm that fitted components with the same PN/DN are compatible and meet prescribed pressure/temperature selections.
Related standards
- Pressure/temperature rating tables referenced in corresponding ISO standards (used to determine permissible working pressure for a given material, design and temperature).
- Standards on DN (nominal size) and specific flange dimensional standards (for detailed mating dimensions).
Keywords: ISO 7268:1983, nominal pressure, PN, pipe components, metallic piping system, flanges, DN, pressure rating.
ISO 7268:1983 - Pipe components -- Definition of nominal pressure
ISO 7268:1983 - Tuyauterie -- Définition de la pression nominale
ISO 7268:1983 - Tuyauterie -- Définition de la pression nominale
Frequently Asked Questions
SIST ISO 7268:2001 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Pipe components -- Definition of nominal pressure". This standard covers: Gives the definition of nominal pressure when applied to components fo a metallic piping system, and states two series of PN ratings for use with these components.
Gives the definition of nominal pressure when applied to components fo a metallic piping system, and states two series of PN ratings for use with these components.
SIST ISO 7268:2001 is classified under the following ICS (International Classification for Standards) categories: 23.040.01 - Pipeline components and pipelines in general. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST ISO 7268:2001 has the following relationships with other standards: It is inter standard links to SIST ISO 7268:2001/AMD 1:2001; is excused to ISO 7268:1983/Amd 1:1984, SIST ISO 7268:2001/AMD 1:2001. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST ISO 7268:2001 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2001
Cevne komponente - Definicija imenskega tlaka
Pipe components -- Definition of nominal pressure
Tuyauterie -- Définition de la pression nominale
Ta slovenski standard je istoveten z: ISO 7268:1983
ICS:
23.040.01 Deli cevovodov in cevovodi Pipeline components and
na splošno pipelines in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
International Standard
INTERNATIONAL ORGANIZATION FOR STANDARDlZATlON*MEXflYHAPO~HAR OPrAHH3AUHR IlO CTAHJWTH3AlWl~RGANlSATlON INTERNATIONALE DE NORMALISATION
Definition of nominal pressure
Pipe components -
Tu yau terie - D&hit/on de la pression nominale
First edition - 1983-05-01
Ref. No. IS0 7268-1983 (E)
UDC 621.643.4 : 532.11
G?
-
Descriptors : piping, pipe flanges, determination, pressure.
Price based on 1 page
Foreword
IS0 (the International Organization for Standardization) is a worldwide federation of
national standards bodies (IS0 member bodies). The work of developing Inter-
national Standards is carried out through IS0 technical committees. Every member
body interested in a subject for which a technical committee has been authorized has
the right to be represented on that committee. International organizations, govern-
mental and non-governmental, in liaison with ISO, also take part in the work.
Draft International Standards adopted by the technical committees are circulated to
the member bodies for approval before their acceptance as International Standards by
the IS0 Council.
International Standard IS0 7268 was developed by Technical Committee ISO/TC 5,
Ferrous metal pipes an
...
International Standard
INTERNATIONAL ORGANIZATION FOR STANDARDlZATlON*MEXflYHAPO~HAR OPrAHH3AUHR IlO CTAHJWTH3AlWl~RGANlSATlON INTERNATIONALE DE NORMALISATION
Definition of nominal pressure
Pipe components -
Tu yau terie - D&hit/on de la pression nominale
First edition - 1983-05-01
Ref. No. IS0 7268-1983 (E)
UDC 621.643.4 : 532.11
G?
-
Descriptors : piping, pipe flanges, determination, pressure.
Price based on 1 page
Foreword
IS0 (the International Organization for Standardization) is a worldwide federation of
national standards bodies (IS0 member bodies). The work of developing Inter-
national Standards is carried out through IS0 technical committees. Every member
body interested in a subject for which a technical committee has been authorized has
the right to be represented on that committee. International organizations, govern-
mental and non-governmental, in liaison with ISO, also take part in the work.
Draft International Standards adopted by the technical committees are circulated to
the member bodies for approval before their acceptance as International Standards by
the IS0 Council.
International Standard IS0 7268 was developed by Technical Committee ISO/TC 5,
Ferrous metal pipes and metallic fittings, and was circulated to the member bodies in
November 1980.
It has been approved by the member bodies of the following countries:
Belgium India Norway
Brazil Ireland South Africa, Rep. of
Canada Israel Spain
Czechoslovakia Italy Sweden
Finland Japan Switzerland
France Korea, Dem. P. Rep. of United Kingdom
Germany, F. R. Korea, Rep. of U
...
Norme internationale
INTERNATIONAL ORGANIZATION FOR STANDARDIZATIONWE~YHAPO~HAR OPTAHMSAUMR fl0 CTAH~PTM3AL(MbWORGANISATION INTERNATIONALE DE NORMALISATION
Tuyauterie - Définition de la pression nominale
Pipe components - Defïnition of nominal pressure
Première édition - 1983-05-01
Réf. no : ISO 7268-1983 (F)
CDU 621.643.4 : 532.11
Descripteurs : tuyauterie, bride de tuyauterie, détermination, pression.
Prix basé sur 1 page
Avant-propos
L’ISO (Organisation internationale de normalisation) est une fédération mondiale
d’organismes nationaux de normalisation (comités membres de I’ISO). L’élaboration
des Normes internationales est confiée aux comités techniques de I’ISO. Chaque
comité membre intéressé par une étude a le droit de faire partie du comité technique
correspondant. Les organisations internationales, gouvernementales et non gouverne-
mentales, en liaison avec I’ISO, participent également aux travaux.
Les projets de Normes internationales adoptés par les comités techniques sont soumis
aux comités membres pour approbation, avant leur acceptation comme Normes inter-
nationales par le Conseil de I’ISO.
La Norme internationale ISO 7268 a été élaborée par le comité technique ISO/TC 5,
Tuyauteries en métaux ferreux et raccords métalliques, et a été soumise aux comités
membres en novembre 1980.
Les comités membres des pays suivants l’ont approuvée:
Afrique du Sud, Rép. d’ Finlande Norvège
Allemagne, R.F. France Pays-Bas
Belgique Hongrie Royaume-Uni
Brésil Inde Suède
Canada Irlande Suisse
Corée, Rép. de Israël Tchécoslovaquie
Corée, Rép. dém
...
Norme internationale
INTERNATIONAL ORGANIZATION FOR STANDARDIZATIONWE~YHAPO~HAR OPTAHMSAUMR fl0 CTAH~PTM3AL(MbWORGANISATION INTERNATIONALE DE NORMALISATION
Tuyauterie - Définition de la pression nominale
Pipe components - Defïnition of nominal pressure
Première édition - 1983-05-01
Réf. no : ISO 7268-1983 (F)
CDU 621.643.4 : 532.11
Descripteurs : tuyauterie, bride de tuyauterie, détermination, pression.
Prix basé sur 1 page
Avant-propos
L’ISO (Organisation internationale de normalisation) est une fédération mondiale
d’organismes nationaux de normalisation (comités membres de I’ISO). L’élaboration
des Normes internationales est confiée aux comités techniques de I’ISO. Chaque
comité membre intéressé par une étude a le droit de faire partie du comité technique
correspondant. Les organisations internationales, gouvernementales et non gouverne-
mentales, en liaison avec I’ISO, participent également aux travaux.
Les projets de Normes internationales adoptés par les comités techniques sont soumis
aux comités membres pour approbation, avant leur acceptation comme Normes inter-
nationales par le Conseil de I’ISO.
La Norme internationale ISO 7268 a été élaborée par le comité technique ISO/TC 5,
Tuyauteries en métaux ferreux et raccords métalliques, et a été soumise aux comités
membres en novembre 1980.
Les comités membres des pays suivants l’ont approuvée:
Afrique du Sud, Rép. d’ Finlande Norvège
Allemagne, R.F. France Pays-Bas
Belgique Hongrie Royaume-Uni
Brésil Inde Suède
Canada Irlande Suisse
Corée, Rép. de Israël Tchécoslovaquie
Corée, Rép. dém
...
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