SIST EN 12020-2:2023

Aluminium and aluminium alloys - Extruded precision profiles in alloys EN AW-6060 and EN AW-6063 - Part 2: Tolerances on dimensions and form

This document specifies tolerances on dimensions and form of extruded precision profiles in alloys EN AW-6060 and EN AW-6063, manufactured with and without a thermal barrier (see Figures 1 and 2). It applies to extruded products supplied without further surface treatment. Precision profiles covered in this document are distinguished from extruded profiles for general applications covered in EN 755-9 by the following characteristics:
-   they are mainly for architectural applications designed with mostly uniformly wall-thicknesses;
-   they are mainly used for architecture, mechanical engineering and automotive applications (except structural-parts and crash-elements);
-   the maximum weight per metre of 10 kg/m;
-   the max. wall-thickness proportion (S max/S min) of 3,5 mm.
In the case of profiles which, due to the complexity of their design, are difficult to manufacture and specify, then special agreements between supplier and purchaser may need to be reached.
NOTE   The effect of the thermal barrier material on the dimensional tolerances is covered by this document although the actual thermal barrier material itself is not (see EN 14024).

Aluminium und Aluminiumlegierungen - Stranggepresste Präzisionsprofile aus Legierungen EN AW-6060 und EN AW-6063 - Teil 2: Grenzabmaße und Formtoleranzen

Dieses Dokument legt die Grenzabmaße und Formtoleranzen für stranggepresste Präzisionsprofile aus den Legierungen EN AW 6060 und EN AW 6063 fest, die mit oder ohne Wärmedämmung (siehe Bild 1 bzw. Bild 2) hergestellt werden. Es gilt für stranggepresste Erzeugnisse, die ohne weitere Oberflächenbehandlung hergestellt werden. Die in diesem Dokument beschriebenen Präzisionsprofile unterscheiden sich von den stranggepressten Profilen für allgemeine Anwendungen nach EN 755 9 wie folgt:
-   sie sind hauptsächlich für Anwendungen im Architekturbereich vorgesehen, die mit meist gleichmäßigen Wanddicken ausgeführt werden;
-   sie werden hauptsächlich in der Architektur, im Maschinenbau und im Automobilbau (außer als Konstruktionsteile und Crashelemente) eingesetzt;
-   das maximale Metergewicht beträgt 10 kg/m;
-   das maximale Wanddickenverhältnis (S max/S min) beträgt 3,5 mm.
Bei Profilen, die aufgrund ihrer komplexen Konstruktion schwierig herzustellen und zu spezifizieren sind, können besondere Vereinbarungen zwischen Lieferant und Käufer notwendig sein.
ANMERKUNG   Der Einfluss des Materials für die Wärmedämmung auf die Grenzabmaße wird in diesem Dokument berücksichtigt, wenngleich das eigentliche Material für die Wärmedämmung nicht enthalten ist (siehe EN 14024).

Aluminium et alliages d'aluminium - Profilés de précision filés en alliages EN AW-6060 et EN AW-6063 - Partie 2 : Tolérances sur dimensions et forme

Le présent document spécifie les tolérances sur dimensions et forme des profilés de précision filés en alliages EN AW-6060 et EN AW-6063 fabriqués avec ou sans barrière thermique (voir Figures 1 et 2). Il s’applique aux produits filés fournis sans traitement de surface spécifique. Les profilés de précision traités dans le présent document se distinguent des produits filés pour application générale traités dans l’EN 755 9 par les caractéristiques suivantes :
-   conçus avec des épaisseurs de paroi le plus souvent uniformes, ils sont principalement destinés aux applications architecturales ;
-   ils sont principalement destinés à des applications du génie mécanique, de l’architecture et de l’automobile (à l’exception des éléments de structure et des éléments exposés aux collisions) ;
-   la masse maximale par mètre est de 10 kg/m ;
-   le rapport maximal d’épaisseur de paroi (S max/S min) est de 3,5 mm.
Dans le cas de profilés qui, en raison de la complexité de leur conception, sont difficiles à fabriquer et à spécifier, il peut s’avérer nécessaire que le fournisseur et l’acheteur conviennent d’accords spéciaux.
NOTE   Les effets du matériau de barrière thermique sur les tolérances dimensionnelles sont traités dans le présent document, même si le matériau lui-même de la barrière thermique proprement dite ne l’est pas (voir l'EN 14024).

Aluminij in aluminijeve zlitine - Precizni iztiskani profili v zlitinah EN AW-6060 in EN AW-6063 - 2. del: Tolerance mer in oblike

Ta dokument določa tolerance mer in oblike preciznih iztiskanih profilov v zlitinah EN AW-6060 in EN AW-6063, izdelanih s termično prevleko ali brez nje (glej sliki 1 in 2). Uporablja se za iztiskane proizvode, dobavljene brez nadaljnje površinske obdelave. Precizni profili, ki jih zajema ta dokument, se razlikujejo od iztiskanih profilov za splošno uporabo, ki so zajeti v standardu EN 755-9, po naslednjih lastnostih:
–   namenjeni so zlasti za arhitekturno uporabo z večinoma enakomernimi debelinami sten;
–   uporabljajo se predvsem v arhitekturi, strojništvu in avtomobilski industriji (razen elementov konstrukcijskih delov in elementov proti trčenju);
–   največja teža na meter je 10 kg/m;
–   največji delež debeline stene (S max/S min) je 3,5 mm.
Pri profilih, ki jih je zaradi kompleksnosti zasnove težko izdelati in določiti, je morda treba doseči posebne dogovore med dobaviteljem in kupcem.
OPOMBA:   Učinek termične prevleke na tolerance mer je zajet v tem dokumentu, čeprav sam material termične prevleke ni zajet (glej standard EN 14024).

General Information

• Status: Published
• Public Enquiry End Date: 05-Sep-2021
• Publication Date: 22-Jan-2023
• ICS: 77.150.10 - Aluminium products
• Technical Committee: INEK - Nonferrous metals
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 04-Jan-2023
• Due Date: 11-Mar-2023
• Completion Date: 23-Jan-2023
• Ref Project: EN 12020-2:2022 - Aluminium and aluminium alloys - Extruded precision profiles in alloys EN AW-6060 and EN AW-6063 - Part 2: Tolerances on dimensions and form

Relations

• Revised: SIST EN 12020-2:2017 - Aluminium and aluminium alloys - Extruded precision profiles in alloys EN AW-6060 and EN AW-6063 - Part 2: Tolerances on dimensions and form
• Effective Date: 03-Feb-2021
• Replaces: SIST EN 12020-2:2017/AC:2017 - Aluminium and aluminium alloys - Extruded precision profiles in alloys EN AW-6060 and EN AW-6063 - Part 2: Tolerances on dimensions and form
• Effective Date: 28-Dec-2022
• Replaces: SIST EN 12020-2:2017 - Aluminium and aluminium alloys - Extruded precision profiles in alloys EN AW-6060 and EN AW-6063 - Part 2: Tolerances on dimensions and form
• Effective Date: 28-Dec-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 12020-2:2023
01-marec-2023
Nadomešča:
SIST EN 12020-2:2017
SIST EN 12020-2:2017/AC:2017
Aluminij in aluminijeve zlitine - Precizni iztiskani profili v zlitinah EN AW-6060 in
EN AW-6063 - 2. del: Tolerance mer in oblike
Aluminium and aluminium alloys - Extruded precision profiles in alloys EN AW-6060 and
EN AW-6063 - Part 2: Tolerances on dimensions and form
Aluminium und Aluminiumlegierungen - Stranggepresste Präzisionsprofile aus
Legierungen EN AW-6060 und EN AW-6063 - Teil 2: Grenzabmaße und Formtoleranzen
Aluminium et alliages d'aluminium - Profilés de précision filés en alliages EN AW-6060 et
EN AW-6063 - Partie 2 : Tolérances sur dimensions et forme
Ta slovenski standard je istoveten z: EN 12020-2:2022
ICS:
77.150.10 Aluminijski izdelki Aluminium products
SIST EN 12020-2:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 12020-2:2023

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SIST EN 12020-2:2023


EN 12020-2
EUROPEAN STANDARD

NORME EUROPÉENNE

December 2022
EUROPÄISCHE NORM
ICS 77.150.10 Supersedes EN 12020-2:2016
English Version

Aluminium and aluminium alloys - Extruded precision
profiles in alloys EN AW-6060 and EN AW-6063 - Part 2:
Tolerances on dimensions and form
Aluminium et alliages d'aluminium - Profilés de Aluminium und Aluminiumlegierungen -
précision filés en alliages EN AW-6060 et EN AW-6063 Stranggepresste Präzisionsprofile aus Legierungen EN
- Partie 2 : Tolérances sur dimensions et forme AW-6060 und EN AW-6063 - Teil 2: Grenzabmaße und
Formtoleranzen
This European Standard was approved by CEN on 30 October 2022.

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 CEN-CENELEC Management Centre 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 CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12020-2:2022 E
worldwide for CEN national Members.

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SIST EN 12020-2:2023
EN 12020-2:2022 (E)
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 5
4 Tolerances on dimensions . 5
4.1 General . 5
4.2 Cross-sectional dimensions . 5
4.3 Length . 7
4.4 Squareness of cut ends . 8
4.5 Length offset for profiles with a thermal barrier . 8
5 Tolerances on form . 8
5.1 Parallelism . 8
5.2 Straightness . 9
5.3 Convexity-Concavity . 10
5.4 Contour . 12
5.5 Twist . 13
5.6 Angularity . 15
5.7 Corner and fillet radii . 16
Bibliography . 18

2

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SIST EN 12020-2:2023
EN 12020-2:2022 (E)
European foreword
This document (EN 12020-2:2022) has been prepared by Technical Committee CEN/TC 132
“Aluminium and aluminium alloys”, the secretariat of which is held by AFNOR.
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 June 2023, and conflicting national standards shall be
withdrawn at the latest by June 2023.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 12020-2:2016.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
3

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SIST EN 12020-2:2023
EN 12020-2:2022 (E)
1 Scope
This document specifies tolerances on dimensions and form of extruded precision profiles in alloys
EN AW-6060 and EN AW-6063, manufactured with and without a thermal barrier (see Figures 1 and 2).
It applies to extruded products supplied without further surface treatment. Precision profiles covered
in this document are distinguished from extruded profiles for general applications covered in EN 755-9
by the following characteristics:
— they are designed with mostly uniform wall-thicknesses;
— they are mainly used for mechanical engineering, architectural and automotive (except crash-
elements) applications;
— their maximum weight per metre is 10 kg/m;
— their maximum wall thickness ratio (t /t ) is 3,5.
max min
In the case of profiles which, due to the complexity of their design, are difficult to manufacture and
specify, then special agreements between supplier and purchaser may need to be reached.
NOTE The effect of the thermal barrier material on the dimensional tolerances is covered by this document
although the actual thermal barrier material itself is not (see EN 14024).


Key Key
1 CD maximum 350 mm 1 CD maximum 350 mm
2 thermal barriers
Figure 1 — Profile without thermal barrier Figure 2 — Profile containing thermal barrier

2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN ISO 1101, Geometrical product specifications (GPS) - Geometrical tolerancing - Tolerances of form,
orientation, location and run-out (ISO 1101)
4

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SIST EN 12020-2:2023
EN 12020-2:2022 (E)
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
4 Tolerances on dimensions
4.1 General
If, for compelling reasons, tolerances closer than those specified in 4.2.2 are required, these shall only
be specified for dimensions that are critical to the function, subject to specific agreement between
supplier and purchaser. Any such reduction shall not exceed two-thirds of the values specified in this
document and is subject to a minimum tolerance band of 0,3 mm.
4.2 Cross-sectional dimensions
4.2.1 General
The tolerances of the following dimensions (see Figure 3) are specified in Tables 1 and 2.
— A: wall thicknesses except those enclosing the hollow spaces in hollow profiles;
— B: wall thicknesses enclosing the hollow spaces in hollow profiles, except those between two
hollow spaces;
— C: wall thicknesses between two hollow spaces in hollow profiles;
— E: the length of the shorter leg of profiles with open ends;
— H: all dimensions (except wall thickness) between points on the cross section of the profile or the
centres of open screw holes, including open ends.
5

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SIST EN 12020-2:2023
EN 12020-2:2022 (E)

Figure 3 — Definition of dimensions A, B, C, E, H
4.2.2 Tolerances on dimensions other than wall thickness
The tolerances for dimension H shall be as specified in Table 1.
Table 1 — Tolerances on cross-sectional dimensions
Dimensions in millimetres
Dimension H Tolerances on H Tolerances on H (open ends)
a
Over Up to and including (except open ends) E ≤ 60 60 < E ≤ 120
b
- 10 ±0,15 ±0,15
b
10 15 ±0,20 ±0,20
b
15 30 ±0,25 ±0,25
30 45 ±0,30 ±0,30 ±0,45
45 60 ±0,40 ±0,40 ±0,55
60 90 ±0,45 ±0,45 ±0,65
90 120 ±0,60 ±0,60 ±0,80
120 150 ±0,80 ±0,80 ±1,0
150 180 ±1,0 ±1,0 ±1,3
180 240 ±1,2 ±1,2 ±1,5
240 300 ±1,5 ±1,5 ±1,8
300 350 ±1,8 ±1,8 ±2,1
NOTE Tolerances given in Table 1 do not
...

SLOVENSKI STANDARD
oSIST prEN 12020-2:2021
01-september-2021
Aluminij in aluminijeve zlitine - Precizni iztiskani profili v zlitinah EN AW-6060 in EN
AW-6063 - 2. del: Tolerance mer in oblike
Aluminium and aluminium alloys - Extruded precision profiles in alloys EN AW-6060 and
EN AW-6063 - Part 2: Tolerances on dimensions and form
Aluminium und Aluminiumlegierungen - Stranggepresste Präzisionsprofile aus
Legierungen EN AW-6060 und EN AW-6063 - Teil 2: Grenzabmaße und Formtoleranzen
Aluminium et alliages d'aluminium - Profilés de précision filés en alliages EN AW-6060 et
EN AW-6063 - Partie 2 : Tolérances sur dimensions et forme
Ta slovenski standard je istoveten z: prEN 12020-2
ICS:
77.150.10 Aluminijski izdelki Aluminium products
oSIST prEN 12020-2:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 12020-2:2021

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oSIST prEN 12020-2:2021


DRAFT
EUROPEAN STANDARD
prEN 12020-2
NORME EUROPÉENNE

EUROPÄISCHE NORM

June 2021
ICS 77.150.10 Will supersede EN 12020-2:2016
English Version

Aluminium and aluminium alloys - Extruded precision
profiles in alloys EN AW-6060 and EN AW-6063 - Part 2:
Tolerances on dimensions and form
Aluminium et alliages d'aluminium - Profilés de Aluminium und Aluminiumlegierungen -
précision filés en alliages EN AW-6060 et EN AW-6063 Stranggepresste Präzisionsprofile aus Legierungen EN
- Partie 2 : Tolérances sur dimensions et forme AW-6060 und EN AW-6063 - Teil 2: Grenzabmaße und
Formtoleranzen
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 132.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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 CEN-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.


EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 12020-2:2021 E
worldwide for CEN national Members.

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oSIST prEN 12020-2:2021
prEN 12020-2:2021 (E)
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 5
4 Tolerances on dimensions . 5
4.1 General . 5
4.2 Cross-sectional dimensions . 5
4.3 Length . 7
4.4 Squareness of cut ends . 8
4.5 Length offset for profiles with a thermal barrier . 8
5 Tolerances on form . 8
5.1 Parallelism . 8
5.2 Straightness . 9
5.3 Convexity-Concavity . 10
5.4 Contour . 11
5.5 Twist . 12
5.6 Angularity . 14
5.7 Corner and fillet radii . 15
Bibliography . 17

2

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oSIST prEN 12020-2:2021
prEN 12020-2:2021 (E)
European foreword
This document (prEN 12020-2:2021) has been prepared by Technical Committee CEN/TC 132
“Aluminium and aluminium alloys”, the secretariat of which is held by AFNOR.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 12020-2:2016.
3

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oSIST prEN 12020-2:2021
prEN 12020-2:2021 (E)
1 Scope
This document specifies tolerances on dimensions and form of extruded precision profiles in alloys
EN AW-6060 and EN AW-6063, manufactured with and without a thermal barrier (see Figures 1 and 2).
It applies to extruded products supplied without further surface treatment. Precision profiles covered
in this document are distinguished from extruded profiles for general applications covered in EN 755-9
by the following characteristics:
— they are mainly for architectural applications designed with mostly uniformly wall-thicknesses;
— they are mainly used for architecture, mechanical engineering and automotive applications (except
structural-parts and crash-elements);
— the maximum weight per metre of 10 kg/m;
— the max. wall-thickness proportion (S max/S min) of 3,5 mm.
In the case of profiles which, due to the complexity of their design, are difficult to manufacture and
specify, then special agreements between supplier and purchaser may need to be reached.
NOTE The effect of the thermal barrier material on the dimensional tolerances is covered by this document
although the actual thermal barrier material itself is not (see EN 14024).


Key Key
1 CD maximum 350 mm 1 CD maximum 350 mm
2 thermal barriers
Figure 1 — Profile without thermal barrier Figure 2 — Profile containing thermal barrier
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN ISO 1101, Geometrical product specifications (GPS) — Geometrical tolerancing — Tolerances of form,
orientation, location and run-out (ISO 1101)
4

---------------------- Page: 6 ----------------------
oSIST prEN 12020-2:2021
prEN 12020-2:2021 (E)
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
4 Tolerances on dimensions
4.1 General
If, for compelling reasons, tolerances closer than those specified in 4.2.2 are required, these shall only
be specified for dimensions that are critical to the function, subject to specific agreement between
supplier and purchaser. Any such reduction shall not exceed two-thirds of the values specified in this
document and is subject to a minimum tolerance band of 0,3 mm.
4.2 Cross-sectional dimensions
4.2.1 General
The tolerances of the following dimensions (see Figure 3) are specified in Tables 1 and 2.
— A: wall thicknesses except those enclosing the hollow spaces in hollow profiles;
— B: wall thicknesses enclosing the hollow spaces in hollow profiles, except those between two
hollow spaces;
— C: wall thicknesses between two hollow spaces in hollow profiles;
— E: the length of the shorter leg of profiles with open ends;
— H: all dimensions (except wall thickness) between points on the cross section of the profile or the
centres of open screw holes, including open ends.

Figure 3 — Definition of dimensions A, B, C, E, H
5

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oSIST prEN 12020-2:2021
prEN 12020-2:2021 (E)
4.2.2 Tolerances on dimensions other than wall thickness
The tolerances for dimension H shall be as specified in Table 1.
Table 1 — Tolerances on cross-sectional dimensions
Dimensions in millimetres
Dimension H Tolerances on H (open ends)
Tolerances on H
(except open ends)
a
Over Up to and including E ≤ 60 60 < E ≤ 120
b
- 10 ±0,15 ±0,15
b
10 15 ±0,20 ±0,20
b
15 30 ±0,25 ±0,25
30 45 ±0,30 ±0,30 ±0,45
45 60 ±0,40 ±0,40 ±0,55
60 90 ±0,45 ±0,45 ±0,65
90 120 ±0,60 ±0,60 ±0,80
120 150 ±0,80 ±0,80 ±1,0
150 180 ±1,0 ±1,0 ±1,3
180 240 ±1,2 ±1,2 ±1,5
240 300 ±1,5 ±1,5 ±1,8
300 350 ±1,8 ±1,8 ±2,1
NOTE Tolerances given in Table 1 do not cover dimensions from a given point inside a closed hollow
chamber to any other point outside the chamber.
a
Tolerances for values of dimension E over 120 mm shall be subject to agreement between supplier and
purchaser.
b
Shall be subject to agreement between purchaser and supplier.
4.2.3 Tolerances on wall thickness of solid and hol
...