Pipe threads where pressure tight joints are made on the threads - Part 2: Taper external threads and taper internal threads - Dimensions, tolerances and designation

This document specifies the requirements for thread form, dimensions, tolerances and designation for jointing pipe threads, sizes 1/16 to 6 inclusive, for joints made pressure-tight by the mating of the threads. These threads are taper external and taper internal and are intended for use with pipes suitable for threading and for valves, fittings or other pipeline equipment interconnected by threaded joints.
An appropriate thread sealant or jointing compound should be used on the thread to ensure pressure-tight joints.
NOTE 1     Threaded joints using taper external threads and parallel internal threads are detailed in EN 10226-1.
NOTE 2    The requirements for taper external threads are identical in EN 10226-1 and EN 10226-2.
NOTE 3    For pipe threads where pressure-tight joints are not made on the threads see EN ISO 228-1.
NOTE 4    EN 10226-3 gives details of recommended gauging systems for the verification of thread dimensions and thread form.

Rohrgewinde für im Gewinde dichtende Verbindungen - Teil 2: Kegelige Außengewinde und kegelige Innengewinde - Maße, Toleranzen und Bezeichnung

Dieses Dokument legt die Anforderungen an Gewindeform, Maße, Toleranzen und die Bezeichnung von Rohrgewinden für im Gewinde dichtende Verbindungen der Gewinde- Nenngrößen 1/16 bis 6 fest. Diese Gewinde sind kegelige Außengewinde und kegelige Innengewinde; sie sind für Rohre mit Gewinden für Armaturen, Fittings und sonstige Rohrleitungsteile, die geschraubt verbunden werden, bestimmt.
Um eine druckdichte Verbindung sicherzustellen, sollte eine geeignete Dichtungsmasse oder Flächenpressung im Gewinde angewendet werden.
ANMERKUNG 1   Gewindeverbindungen mit kegeligen Außengewinden und zylindrischen Innengewinden sind detailliert in EN 10226-1 angegeben.
ANMERKUNG 2   Die Anforderungen an kegelige Außengewinde in EN 10226-1 sind mit denen in EN 10226 2 identisch.
ANMERKUNG 3   Rohrgewinde für nicht im Gewinde dichtende Verbindungen siehe EN ISO 228-1.
ANMERKUNG 4   In EN 10226-3 sind die für die Prüfung von Gewindemaßen und der Gewindeform empfohlenen Lehrensysteme detailliert beschrieben.

Filetages de tuyauteries pour raccordement avec étanchéité par le filetage - Partie 2: Extérieurs coniques et filetages intérieurs coniques - Dimensions, tolérances et désignation

La présente Norme européenne spécifie les prescriptions relatives à la forme, aux dimensions, aux tolérances et à la désignation des filetages de tuyauterie pour raccordement avec étanchéité dans le filet, de dimensions de filetage 1/16 à 6 comprises. Ces filetages sont des filetages extérieurs coniques et des filetages intérieurs coniques, et s'appliquent aux tubes filetés, aux filetages de robinetterie et aux raccords ou autres éléments de tuyauteries assemblés avec des joints filetés.
Il convient qu'une pâte d'étanchéité ou un produit de jointoiement approprié soit interposé dans le joint pour assurer l'étanchéité dans le filet.
NOTE 1   Les filetages extérieurs coniques et intérieurs cylindriques sont décrits dans l'EN 10226-1.
NOTE 2   Les prescriptions s'appliquant aux filetages extérieurs coniques sont identiques dans l'EN 10226-1 et l'EN 10226-2.
NOTE 3   Pour les filetages de tuyauterie pour raccordement sans étanchéité dans le filet, voir l'EN ISO 228-1.
NOTE 4   L'EN 10226-3 donne des précisions sur les systèmes de calibrage recommandés pour la vérification des dimensions et de la forme des filetages.

Cevni navoji za zveze, ki tesnijo z navoji – 2. del: Konični zunanji navoji in konični notranji navoji – Mere, tolerance in označevanje

General Information

Status
Published
Publication Date
16-Aug-2005
Current Stage
9093 - Decision to confirm - Review Enquiry
Due Date
04-Mar-2019
Completion Date
13-Jun-2019

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SLOVENSKI STANDARD
SIST EN 10226-2:2005
01-november-2005

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QRWUDQMLQDYRML±0HUHWROHUDQFHLQR]QDþHYDQMH

Pipe threads where pressure tight joints are made on the threads - Part 2: Taper external

threads and taper internal threads - Dimensions, tolerances and designation

Rohrgewinde für im Gewinde dichtende Verbindungen - Teil 2: Kegelige Außengewinde

und kegelige Innengewinde - Maße, Toleranzen und Bezeichnung

Filetages de tuyauteries pour raccordement avec étanchéité par le filetage - Partie 2:

Extérieurs coniques et filetages intérieurs coniques - Dimensions, tolérances et
désignation
Ta slovenski standard je istoveten z: EN 10226-2:2005
ICS:
21.040.30 Posebni navoji Special screw threads
SIST EN 10226-2:2005 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 10226-2:2005
---------------------- Page: 2 ----------------------
SIST EN 10226-2:2005
EUROPEAN STANDARD
EN 10226-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2005
ICS 21.040.30
English Version
Pipe threads where pressure tight joints are made on the
threads - Part 2: Taper external threads and taper internal
threads - Dimensions, tolerances and designation

Filetages de tuyauterie pour raccordement avec étanchéité Rohrgewinde für im Gewinde dichtende Verbindungen - Teil

dans le filet - Partie 2: Filetages extérieurs coniques et 2: Kegelige Außengewinde und kegelige Innengewinde -

filetages intérieurs coniques - Dimensions, tolérances et Maße, Toleranzen und Bezeichnung

désignation
This European Standard was approved by CEN on 27 June 2005.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European

Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national

standards may be obtained on application to the Central Secretariat or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation

under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official

versions.

CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,

Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,

Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels

© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 10226-2:2005: E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN 10226-2:2005
EN 10226-2:2005 (E)
Contents
Page

Foreword ..................................................................................................................................................................3

1 Scope ...........................................................................................................................................................4

2 Normative references .................................................................................................................................4

3 Terms and definitions.................................................................................................................................4

4 Symbols and explanations.........................................................................................................................6

5 Dimensions..................................................................................................................................................6

6 Designation .................................................................................................................................................6

7 Thread design .............................................................................................................................................8

7.1 Thread form.................................................................................................................................................8

7.2 Thread lengths ............................................................................................................................................9

8 Gauging .....................................................................................................................................................11

Bibliography...........................................................................................................................................................13

---------------------- Page: 4 ----------------------
SIST EN 10226-2:2005
EN 10226-2:2005 (E)
Foreword

This document (EN 10226-2:2005) has been prepared by Technical Committee ECISS/TC 29 “Steel tubes and

fittings for steel tubes”, the secretariat of which is held by UNI/UNSIDER.

This European Standard shall be given the status of a national standard, either by publication of an identical text or

by endorsement, at the latest by February 2006, and conflicting national standards shall be withdrawn at the latest

by February 2006.

This document has been prepared under a mandate given to CEN by the European Commission and the European

Free Trade Association.

This document is based, with editorial modifications on ISO 7-1 "Pipe threads where pressure-tight joints are made

on the threads - Part 1: Dimensions, tolerances and designation". Pipe threads to this document are dimensionally

identical to and fully interchangeable with pipe threads to ISO 7-1.

This document has been prepared in three parts. Parts 1 and 2 reflect the two thread jointing systems in regular

use in Europe and Worldwide - Part 1 details taper external and parallel internal pipe threads, and Part 2 details

taper external and taper internal pipe threads. Part 3 will provide requirements for the gauging of pipe threads

conforming to Parts 1 and 2.

The common requirements for the taper external pipe thread are given in Part 1 and in Part 2, so as to present the

complete thread jointing system in each part.

Components having pipe threads produced to the dimensions and tolerances given in this European Standard can

be assembled to give safe and effective pressure tight joints providing proper assembly techniques are used. The

techniques used to assemble threaded joints are dependent on a number of factors including the internal thread

(parallel or taper), the quality of the mating threads, the materials of the components being connected, the thread

sealant or jointing compound used and the assembly torque.

Because of the different assembly techniques used for the taper / parallel and taper / taper systems, it is

recommended that mixing of components having parallel internal threads and taper internal threads is avoided in

the same piping system.

Relevant EN product or application standards will normally specify whether parallel and /or taper internal threads

are permitted for these products or applications. Users should select the internal thread type to suit their product or

application requirements.

According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following

countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark,

Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,

Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom

---------------------- Page: 5 ----------------------
SIST EN 10226-2:2005
EN 10226-2:2005 (E)
1 Scope

This European Standard specifies the requirements for thread form, dimensions, tolerances and designation for

jointing pipe threads, sizes 1/16 to 6 inclusive, for joints made pressure-tight by the mating of the threads. These

threads are taper external and taper internal and are intended for use with pipes suitable for threading and for

valves, fittings or other pipeline equipment interconnected by threaded joints.

An appropriate thread sealant or jointing compound should be used on the thread to ensure pressure-tight joints.

NOTE 1 Threaded joints using taper external threads and parallel internal threads are detailed in EN 10226-1.

NOTE 2 The requirements for taper external threads are identical in EN 10226-1 and EN 10226-2.

NOTE 3 For pipe threads where pressure-tight joints are not made on the threads see EN ISO 228-1.

NOTE 4 EN 10226-3 gives details of recommended gauging systems for the verification of thread dimensions and thread

form.
2 Normative references

The following referenced documents are indispensable for the application of this European Standard. For dated

references, only the edition cited applies. For undated references, the latest edition of the referenced document

(including any amendments) applies.

EN 10226-3, Pipe threads where pressure-tight joints are made on the threads — Part 3: Verification by means of

limit gauges
3 Terms and definitions

For the purposes of this European Standard, the following terms and definitions apply (see also Figures 2 and 3).

NOTE For consistency and clarity, common terms and definitions have been adopted for EN 10226-1 and EN 10226-2.

Consequently some definitions may include terms that seem inappropriate to this document.

3.1
gauge diameter
major diameter of the thread, whether external or internal, at the gauge plane
3.2
major cone

imaginary cone, which just touches the crests of a taper external thread or the roots of a taper internal thread

3.3
gauge plane

plane, perpendicular to the axis of the taper thread, at which the major cone has the gauge diameter

NOTE 1 For external threads the gauge plane is located at a distance equal to the gauge length from the small end of the

thread.

NOTE 2 For taper internal threads; the gauge plane is located at a distance of half pitch behind the face of the threaded work

piece. This distance has been agreed so that the position of the gauge plane on taper internal threads is consistent with parallel

internal threads in EN 10226-1.
3.4
gauge length

on an external thread, the distance from the gauge plane to the small end of the thread, measured parallel to the

axis
---------------------- Page: 6 ----------------------
SIST EN 10226-2:2005
EN 10226-2:2005 (E)
3.5
reference plane

visible surface of the internally and externally threaded parts, which facilitates the reading of the gauge when the

thread is inspected. For internal threads it is the face of the internally threaded part, for external threads it is the

small end of the externally threaded part
3.6
complete thread
part of the thread that is fully formed at both crest and root
NOTE
...

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