SIST EN ISO 10619-2:2021
(Main)Rubber and plastics hoses and tubing - Measurement of flexibility and stiffness - Part 2: Bending tests at sub-ambient temperatures (ISO 10619-2:2021)
Rubber and plastics hoses and tubing - Measurement of flexibility and stiffness - Part 2: Bending tests at sub-ambient temperatures (ISO 10619-2:2021)
This document specifies two methods for measuring the stiffness and one method for the determination of the flexibility of rubber and plastics hoses and tubing when they are bent to a specific radius at sub-ambient temperatures.
Method A is suitable for non-collapsible rubber and plastics hoses and tubing with a bore of up to and including 25 mm. This method provides a means of measuring the stiffness of the hose or tubing when the temperature is reduced from a standard laboratory temperature.
Method B is suitable for rubber and plastics hoses and tubing with a bore of up to 100 mm and provides a means of assessing the flexibility of the hose or tubing when bent around a mandrel at a specified sub-ambient temperature. It can also be used as a routine quality control test.
Method C is suitable for rubber and plastics hoses and tubing with a bore of 100 mm and greater. This method provides a means of measuring the stiffness of the hose and tubing at sub-ambient temperatures. This method is only suitable for hoses and tubing which are non-collapsible.
Gummi- und Kunststoffschläuche mit und ohne Einlage - Bestimmung der Biegsamkeit und Steifigkeit - Teil 2: Biegeprüfungen bei Temperaturen unterhalb der Umgebungstemperatur (ISO 10619-2:2021)
Dieses Dokument legt zwei Verfahren zur Messung der Steifigkeit und ein Verfahren zur Bestimmung der Biegsamkeit von Gummi- und Kunststoffschläuchen mit oder ohne Einlage fest, bei denen die Schläuche bei Temperaturen unterhalb der Umgebungstemperatur bis zu einem festgelegten Radius gebogen werden.
Verfahren A ist für nicht faltbare Gummi- und Kunststoffschläuche mit oder ohne Einlage mit einer Bohrung bis einschließlich 25 mm geeignet. Das Verfahren bietet eine Möglichkeit zum Messen der Steifigkeit des Schlauchs mit und ohne Einlage, wenn die Temperatur ausgehend von einer Normlabortemperatur verringert wird.
Verfahren B ist für Gummi- und Kunststoffschläuche mit und ohne Einlage mit einer Bohrung bis 100 mm geeignet und bietet eine Möglichkeit zur Bewertung der Biegsamkeit der Schläuche mit und ohne Einlage, wenn sie bei einer festgelegten Temperatur unterhalb der Umgebungstemperatur um einen Biegedorn gebogen werden. Dieses Verfahren kann auch als Routineprüfung in der Qualitätslenkung angewendet werden.
Verfahren C ist für Gummi- und Kunststoffschläuche mit und ohne Einlage mit einer Bohrung von 100 mm und größer geeignet. Das Verfahren bietet eine Möglichkeit zum Messen der Steifigkeit der Schläuche mit und ohne Einlage bei Temperaturen unterhalb der Umgebungstemperatur. Dieses Verfahren ist nur für Schläuche mit und ohne Einlage geeignet, die nicht faltbar sind.
WARNUNG - Die in diesem Dokument beschriebene Prüfung sollte von erfahrenem Personal durchgeführt werden. In diesem Dokument werden nicht alle Sicherheitsprobleme behandelt, die bei Anwendung der Norm auftreten können. Es liegt in der Verantwortlichkeit des Anwenders, geeignete Gesundheits- und Sicherheitsmaßnahmen festzulegen.
Tuyaux et tubes en caoutchouc et en plastique - Mesurage de la flexibilité et de la rigidité - Partie 2 : Essais de courbure à des températures inférieures à l'ambiante (ISO 10619-2:2021)
Le présent document spécifie deux méthodes de mesure de la rigidité et une méthode de détermination de la flexibilité des tuyaux et des tubes en caoutchouc et en plastique lorsqu’ils sont courbés à un rayon spécifique à des températures inférieures à la température ambiante.
La méthode A convient pour des tuyaux et des tubes en caoutchouc et en plastique non aplatissables dont l'alésage est inférieur ou égal à 25 mm. Cette méthode fournit un moyen de mesurer la rigidité du tuyau ou du tube lorsque la température est réduite par rapport à une température normale de laboratoire.
La méthode B convient pour des tuyaux et des tubes en caoutchouc et en plastique dont l'alésage est inférieur à 100 mm et fournit un moyen pour évaluer la flexibilité du tuyau ou du tube lorsqu'il est courbé autour d'un mandrin à une température inférieure à la température ambiante spécifiée. Elle peut également être utilisée comme essai de routine de contrôle qualité.
La méthode C convient pour des tuyaux et des tubes en caoutchouc et en plastique dont l'alésage est supérieur ou égal à 100 mm. Cette méthode fournit un moyen de mesurer la rigidité du tuyau ou du tube à des températures inférieures à la température ambiante. Cette méthode ne convient que pour des tuyaux ou des tubes non aplatissables.
Gumene in polimerne cevi ter cevovodi - Merjenje gibljivosti in togosti - 2. del: Upogibni preskus pri temperaturah, nižjih od temperature okolja (ISO 10619-2:2021)
General Information
Relations
Overview
EN ISO 10619-2:2021 - "Rubber and plastics hoses and tubing - Measurement of flexibility and stiffness - Part 2: Bending tests at sub-ambient temperatures" is a CEN-adopted ISO standard that specifies laboratory methods to assess how rubber and plastic hoses and tubing behave when bent at temperatures below ambient. The document defines two stiffness measurement methods and one flexibility test, covering a wide range of bores and intended for material characterization, quality control and specification compliance.
Key topics and requirements
- Scope: Tests apply to rubber and plastics hoses and tubing bent to a specified radius at sub-ambient temperatures; part of the ISO 10619 series.
- Three test methods:
- Method A - Stiffness test for non-collapsible hoses/tubing with bore ≤ 25 mm. Uses a torque wheel to measure bending torque as temperature is reduced from standard laboratory conditions.
- Method B - Flexibility assessment for hoses/tubing with bore up to 100 mm. Bending around a mandrel at a specified sub-ambient temperature; suitable as a routine quality control test.
- Method C - Stiffness test for non-collapsible hoses/tubing with bore ≥ 100 mm; measures stiffness at sub-ambient temperatures.
- Apparatus and measurement:
- Torque wheel arrangement (diameter = twice the minimum bend radius, or if unspecified, 12× nominal bore).
- Strain gauge and recorder for torque measurement (example accuracy ±3% stated in the text).
- Cooling container/agitator and suitable coolant (e.g., methanol/ethanol with dry ice) or gaseous coolants where equivalent results are obtained.
- Test prerequisites: Conditioning and preparation procedures reference ISO 23529; terminology aligns with ISO 8330. Hydrostatic references (ISO 1402) may be relevant for related hose tests.
- Reporting: Methods include defined procedures for expression of results and test reporting to ensure repeatability and comparability.
Applications and users
- Who uses it:
- Hose and tubing manufacturers - product development and specification verification.
- Test laboratories - accredited mechanical and environmental testing.
- Quality control engineers - routine batch testing and acceptance checks (Method B is explicitly suitable for QC).
- OEMs and procurement teams - cold-environment selection and supplier compliance.
- Regulators and standards bodies - harmonised test criteria for safety and performance.
- Practical uses:
- Verifying hose flexibility and stiffness for cold-weather applications (automotive, industrial hydraulics, cryogenic lines, outdoor installations).
- Comparing formulations, constructions or reinforcements under sub-ambient conditions.
- Establishing pass/fail criteria for production and incoming inspection.
Related standards
- ISO 10619 series (other parts)
- ISO 8330 - Vocabulary for rubber and plastics hoses and assemblies
- ISO 23529 - Preparation and conditioning of test pieces
- ISO 1402 - Hydrostatic testing of hoses and hose assemblies
Keywords: EN ISO 10619-2:2021, rubber and plastics hoses, bending tests, sub-ambient temperatures, stiffness measurement, flexibility testing, Method A B C, mandrel test, quality control.
Frequently Asked Questions
SIST EN ISO 10619-2:2021 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Rubber and plastics hoses and tubing - Measurement of flexibility and stiffness - Part 2: Bending tests at sub-ambient temperatures (ISO 10619-2:2021)". This standard covers: This document specifies two methods for measuring the stiffness and one method for the determination of the flexibility of rubber and plastics hoses and tubing when they are bent to a specific radius at sub-ambient temperatures. Method A is suitable for non-collapsible rubber and plastics hoses and tubing with a bore of up to and including 25 mm. This method provides a means of measuring the stiffness of the hose or tubing when the temperature is reduced from a standard laboratory temperature. Method B is suitable for rubber and plastics hoses and tubing with a bore of up to 100 mm and provides a means of assessing the flexibility of the hose or tubing when bent around a mandrel at a specified sub-ambient temperature. It can also be used as a routine quality control test. Method C is suitable for rubber and plastics hoses and tubing with a bore of 100 mm and greater. This method provides a means of measuring the stiffness of the hose and tubing at sub-ambient temperatures. This method is only suitable for hoses and tubing which are non-collapsible.
This document specifies two methods for measuring the stiffness and one method for the determination of the flexibility of rubber and plastics hoses and tubing when they are bent to a specific radius at sub-ambient temperatures. Method A is suitable for non-collapsible rubber and plastics hoses and tubing with a bore of up to and including 25 mm. This method provides a means of measuring the stiffness of the hose or tubing when the temperature is reduced from a standard laboratory temperature. Method B is suitable for rubber and plastics hoses and tubing with a bore of up to 100 mm and provides a means of assessing the flexibility of the hose or tubing when bent around a mandrel at a specified sub-ambient temperature. It can also be used as a routine quality control test. Method C is suitable for rubber and plastics hoses and tubing with a bore of 100 mm and greater. This method provides a means of measuring the stiffness of the hose and tubing at sub-ambient temperatures. This method is only suitable for hoses and tubing which are non-collapsible.
SIST EN ISO 10619-2:2021 is classified under the following ICS (International Classification for Standards) categories: 23.040.70 - Hoses and hose assemblies. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN ISO 10619-2:2021 has the following relationships with other standards: It is inter standard links to SIST EN ISO 10619-2:2018, SIST EN ISO 10619-2:2018. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase SIST EN ISO 10619-2:2021 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of SIST standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2021
Nadomešča:
SIST EN ISO 10619-2:2018
Gumene in polimerne cevi ter cevovodi - Merjenje gibljivosti in togosti - 2. del:
Upogibni preskus pri temperaturah, nižjih od temperature okolja (ISO 10619-
2:2021)
Rubber and plastics hoses and tubing - Measurement of flexibility and stiffness - Part 2:
Bending tests at sub-ambient temperatures (ISO 10619-2:2021)
Gummi- und Kunststoffschläuche mit und ohne Einlage - Bestimmung der Biegsamkeit
und Steifigkeit - Teil 2: Biegeprüfungen bei Temperaturen unterhalb der
Umgebungstemperatur (ISO 10619-2:2021)
Tuyaux et tubes en caoutchouc et en plastique - Mesurage de la flexibilité et de la rigidité
- Partie 2 : Essais de courbure à des températures inférieures à l'ambiante (ISO 10619-
2:2021)
Ta slovenski standard je istoveten z: EN ISO 10619-2:2021
ICS:
23.040.70 Gumene cevi in armature Hoses and hose assemblies
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 10619-2
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2021
EUROPÄISCHE NORM
ICS 23.040.70 Supersedes EN ISO 10619-2:2018
English Version
Rubber and plastics hoses and tubing - Measurement of
flexibility and stiffness - Part 2: Bending tests at sub-
ambient temperatures (ISO 10619-2:2021)
Tuyaux et tubes en caoutchouc et en plastique - Gummi- und Kunststoffschläuche mit und ohne Einlage
Mesurage de la flexibilité et de la rigidité - Partie 2: - Bestimmung der Biegsamkeit und Steifigkeit - Teil 2:
Essais de courbure à des températures inférieures à Biegeprüfungen bei Temperaturen unterhalb der
l'ambiante (ISO 10619-2:2021) Umgebungstemperatur (ISO 10619-2:2021)
This European Standard was approved by CEN on 25 June 2021.
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, Turkey 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
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 10619-2:2021 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 10619-2:2021) has been prepared by Technical Committee ISO/TC 45 "Rubber
and rubber products" in collaboration with Technical Committee CEN/TC 218 “Rubber and plastics
hoses and hose assemblies” the secretariat of which is held by BSI.
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 January 2022, and conflicting national standards shall
be withdrawn at the latest by January 2022.
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 ISO 10619-2:2018.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN websites.
According to the CEN-CENELEC Internal Regulations, the national standards organizations 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, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 10619-2:2021 has been approved by CEN as EN ISO 10619-2:2021 without any
modification.
INTERNATIONAL ISO
STANDARD 10619-2
Third edition
2021-06
Rubber and plastics hoses and
tubing — Measurement of flexibility
and stiffness —
Part 2:
Bending tests at sub-ambient
temperatures
Tuyaux et tubes en caoutchouc et en plastique — Mesurage de la
flexibilité et de la rigidité —
Partie 2: Essais de courbure à des températures inférieures à
l'ambiante
Reference number
ISO 10619-2:2021(E)
©
ISO 2021
ISO 10619-2:2021(E)
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
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Published in Switzerland
ii © ISO 2021 – All rights reserved
ISO 10619-2:2021(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Method A . 2
4.1 General . 2
4.2 Apparatus . 2
4.3 Hose test piece . 2
4.3.1 Type . . 2
4.3.2 Number of hose test pieces . 2
4.4 Test temperature . 2
4.5 Procedure . 3
4.6 Expression of results . 3
4.7 Test report . 3
5 Method B . 4
5.1 General . 4
5.2 Apparatus . 4
5.3 Hose test pieces . 4
5.4 Test temperature . 4
5.5 Procedure . 4
5.6 Test report . 5
6 Method C. 5
6.1 General . 5
6.2 Apparatus . 5
6.3 Hose test piece . 5
6.4 Test temperature . 6
6.5 Procedure . 6
6.6 Expression of results . 6
6.7 Test report . 7
ISO 10619-2:2021(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 45, Rubber and rubber products,
Subcommittee SC 1, Rubber and plastics hoses and hose assemblies, in collaboration with the European
Committee for Standardization (CEN) Technical Committee CEN/TC 218, Rubber and plastics hoses and
hose assemblies, in accordance with the Agreement on technical cooperation between ISO and CEN
(Vienna Agreement).
This third edition cancels and replaces the second edition (ISO 10619-2:2017), which has been
technically revised. The change compared to the previous edition is: the procedure for Method B for
hoses greater than 22 mm has been changed.
A list of all parts in the ISO 10619
...
The article discusses the SIST EN ISO 10619-2:2021 standard, which focuses on the measurement of flexibility and stiffness in rubber and plastics hoses and tubing at sub-ambient temperatures. It outlines three different methods for these measurements, depending on the size and collapsibility of the hoses and tubing. Method A is for non-collapsible hoses and tubing with a bore of up to 25mm, Method B is for hoses and tubing with a bore of up to 100mm, and Method C is for hoses and tubing with a bore of 100mm or greater, but only if they are non-collapsible. These methods provide means of evaluating the stiffness and flexibility of the hoses and tubing under specified sub-ambient temperature conditions, and can be used for quality control purposes.
記事のタイトル：SIST EN ISO 10619-2:2021 - ゴムおよびプラスチックホースおよびチューブ - 柔軟性および剛性の測定 -第2部：低温での曲げ試験（ISO 10619-2:2021） 記事内容：この文書は、低温で特定の半径で曲げられた際のゴムおよびプラスチックホースおよびチューブの柔軟性と剛性を測定するための2つの方法および柔軟性の決定のための1つの方法を指定しています。 方法Aは、内径が25mm以下の可縮性のないゴムおよびプラスチックホースおよびチューブに適しています。この方法は、温度を標準の研究室温度から低下させた場合に、ホースまたはチューブの剛性を測定する手段を提供します。 方法Bは、内径が100mm以下のゴムおよびプラスチックホースおよびチューブに適しており、特定の低温でマンドリルに曲げる際の柔軟性を評価する手段を提供します。これは、定常的な品質管理テストとしても使用できます。 方法Cは、内径が100mm以上のゴムおよびプラスチックホースおよびチューブに適しています。この方法は、低温でホースおよびチューブの剛性を測定する手段を提供します。ただし、この方法は可縮性のないホースおよびチューブにのみ適しています。
記事のタイトル：SIST EN ISO 10619-2:2021-ゴムおよびプラスチック製ホースおよびチューブ-柔軟性と剛性の測定-パート2：低温での曲げ試験（ISO 10619-2:2021） 記事の内容：この文書は、低温で特定の半径で曲げられた時のゴムおよびプラスチック製ホースおよびチューブの柔軟性と剛性を測定するための2つの剛性測定方法と1つの柔軟性測定方法を指定しています。 方法Aは、内径が25mm以下の折りたたまれないゴムおよびプラスチック製ホースおよびチューブに適しています。この方法は、温度が標準の室温から低下する場合に、ホースまたはチューブの剛性を測定する手段を提供します。 方法Bは、内径が最大100mmのゴムおよびプラスチック製ホースおよびチューブに適しており、特定の低温でマンドレルを曲げたときのホースまたはチューブの柔軟性を評価する手段を提供します。これは定期的な品質管理テストとしても使用できます。 方法Cは、内径が100mm以上のゴムおよびプラスチック製ホースおよびチューブに適しています。この方法は、低温でのホースおよびチューブの剛性を測定する手段を提供します。ただし、この方法は折りたたまれないホースおよびチューブにのみ適しています。
기사 제목: SIST EN ISO 10619-2:2021 - 고무 및 플라스틱 호스 및 튜빙 - 유연성과 경질성 측정 - 제2부: 하부 주변 온도에서의 굴곡 시험 (ISO 10619-2:2021) 기사 내용: 이 문서는 하부 주변 온도에서 고무 및 플라스틱 호스 및 튜빙의 유연성과 경질성을 측정하기 위한 두 가지 경질성 측정 방법과 한 가지 유연성 측정 방법을 명시합니다. A 방법은 축소되지 않는 고무 및 플라스틱 호스와 튜빙에 적용되며 내경이 25mm 이하인 호스와 튜빙에 적합합니다. 이 방법은 기준 실험실 온도에서 온도가 낮아지는 경우 호스 또는 튜빙의 경질성을 측정하는 방법을 제공합니다. B 방법은 내경이 최대 100mm인 고무 및 플라스틱 호스와 튜빙에 적합하며 규정된 하부 주변 온도에서 맨드렐 주위로 구부려진 경우 호스 또는 튜빙의 유연성을 평가하는 방법을 제공합니다. 이 방법은 일상적인 품질 관리 시험으로도 사용될 수 있습니다. C 방법은 내경이 100mm 이상인 고무 및 플라스틱 호스와 튜빙에 적합합니다. 이 방법은 하부 주변 온도에서 호스와 튜빙의 경질성을 측정하는 방법을 제공합니다. 이 방법은 축소되지 않는 호스와 튜빙에만 적합합니다.
기사 제목: SIST EN ISO 10619-2:2021 - 고무 및 플라스틱 호스 및 튜브 - 유연성 및 강성 측정 - 제2부: 저온에서의 굴곡 시험 (ISO 10619-2:2021) 기사 내용: 이 문서는 저온에서 고무 및 플라스틱 호스 및 튜브의 유연성과 강성을 측정하는 두 가지 방법과 유연성 결정을 위한 하나의 방법을 명시합니다. A 방법은 축소될 수 없는 고무 및 플라스틱 호스와 튜브에 적용되며, 구경이 25mm 이하인 경우에 사용됩니다. 이 방법은 기준 실험실 온도에서 온도를 낮춰 호스나 튜브의 강성을 측정하는 수단을 제공합니다. B 방법은 구경이 100mm까지인 고무 및 플라스틱 호스와 튜브에 적용되며, 특정한 저온에서 만드렐을 따라 굴곡되는 경우 유연성을 평가하는 방법을 제공합니다. 이는 일상적인 품질 관리 테스트로도 사용될 수 있습니다. C 방법은 구경이 100mm 이상인 고무 및 플라스틱 호스와 튜브에 적용되며, 저온에서 호스와 튜브의 강성을 측정하는 방법입니다. 이 방법은 축소되지 않는 호스와 튜브에만 적합합니다.
The article discusses the SIST EN ISO 10619-2:2021 standard, which specifies methods for measuring the flexibility and stiffness of rubber and plastic hoses and tubing at sub-ambient temperatures. Method A is used for hoses and tubing up to 25 mm in bore, providing a way to measure stiffness when the temperature is lowered. Method B is suitable for hoses and tubing up to 100 mm in bore and assesses flexibility when bent at a specified sub-ambient temperature, also serving as a quality control test. Method C is for hoses and tubing with a bore size of 100 mm and larger, measuring stiffness at sub-ambient temperatures but only applicable to non-collapsible hoses and tubing.
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