EN 10378:2025

SLOVENSKI STANDARD
oSIST prEN 10378:2024
01-junij-2024
Varjene kvadratne in pravokotne cevi iz nerjavnega jekla za mehansko, inženirsko
in dekorativno uporabo - Tehnični dobavni pogoji
Welded stainless steel square and rectangular tubes for mechanical, engineering and
decorative use - Technical delivery conditions
Geschweißte quadratische und rechteckige Rohre aus nichtrostendem Stahl für den
Maschinenbau und dekorative Anwendungen - Technische Lieferbedingungen
Tubes carrés et rectangulaires soudés en acier inoxydable pour usage mécanique,
technique et décoratif - Conditions techniques de livraison
Ta slovenski standard je istoveten z: prEN 10378
ICS:
23.040.10 Železne in jeklene cevi Iron and steel pipes
77.140.75 Jeklene cevi in cevni profili Steel pipes and tubes for
za posebne namene specific use
oSIST prEN 10378:2024 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN 10378:2024
oSIST prEN 10378:2024
DRAFT
EUROPEAN STANDARD
prEN 10378
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2024
ICS 77.140.75
English Version
Welded stainless steel square and rectangular tubes for
mechanical, engineering and decorative use - Technical
delivery conditions
Geschweißte quadratische und rechteckige Rohre aus
nichtrostendem Stahl für den Maschinenbau und
dekorative Anwendungen - Technische
Lieferbedingungen
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 459/SC 10.
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, Türkiye 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
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 10378:2024 E
worldwide for CEN national Members.

oSIST prEN 10378:2024
prEN 10378:2024 (E)
Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Symbols . 6
5 Classification and designation . 7
5.1 Grades and qualities . 7
5.2 Designation . 7
6 Information to be supplied by the purchaser . 7
6.1 Mandatory information . 7
6.2 Options . 7
6.3 Example of an order . 8
7 Manufacturing process . 8
7.1 Steel making process . 8
7.2 Tube manufacturing process . 8
7.3 Delivery conditions . 8
8 Manufacturing process . 10
8.1 General. 10
8.2 Chemical composition . 10
8.2.1 Cast analysis . 10
8.2.2 Product analysis . 13
8.3 Mechanical properties . 14
8.4 Appearance . 15
8.5 Dimensions. 15
8.5.1 Outside dimensions and wall thickness . 15
8.5.2 Lengths. 15
8.5.3 Mass . 15
8.6 Tolerances . 16
8.6.1 Tolerances on outside dimensions and wall thickness . 16
8.6.2 Tolerances on length . 16
8.6.3 Tolerances on shape . 17
8.6.4 Dimple tolerances . 17
8.7 Measurement of size and shape . 17
8.7.1 General. 17
8.7.2 Outside dimensions. 18
8.7.3 Thickness . 18
8.7.4 Length. 18
8.7.5 Concavity and convexity . 18
8.7.6 Squareness of the sides . 19
8.7.7 Externals corners profile . 19
8.7.8 Torsion (Twist) . 20
8.7.9 Straightness . 21
8.7.10 Dimple . 21
oSIST prEN 10378:2024
prEN 10378:2024 (E)
8.8 End preparation . 22
8.9 Sectional properties . 22
9 Inspection and testing . 22
9.1 Types of inspection and testing . 22
9.2 Inspection documents . 22
9.2.1 Types of inspection documents . 22
9.2.2 Content of inspection documents . 23
9.3 Summary of inspection and testing . 23
10 Sampling . 24
10.1 Frequency of tests. 24
10.1.1 Test unit . 24
10.1.2 Number of sample tubes per each test unit. 24
10.2 Preparation of samples and test pieces . 25
10.2.1 General . 25
10.2.2 Test piece for the tensile test at room temperature . 25
10.2.3 Test piece for the flattening test . 25
10.2.4 Test piece for the product analysis . 25
11 Test methods . 25
11.1 Chemical analysis . 25
11.2 Tensile test at room temperature . 25
11.3 Destructive test of weld . 25
11.3.1 Flattening test . 26
11.3.2 Weld bending test . 26
11.4 Dimensional inspection . 27
11.5 Visual examination . 27
11.6 Material identification . 27
11.7 Tensile test at elevated temperature . 27
11.8 Retests, sorting and reprocessing . 27
12 Marking .
...