Thermoplastic multi-layer (non-vulcanized) hoses and hose assemblies for the transfer of liquid petroleum gas and liquefied natural gas — Specification

This document specifies requirements for two types of thermoplastic multi-layer (non-vulcanized) transfer hoses and hose assemblies for carrying liquefied petroleum gas and liquefied natural gas. Each type is subdivided into two classes, one for onshore duties, and the other for offshore. — Class A hose is for use onshore. — Class B hose is for use offshore. This document is applicable for hose sizes from 25 mm to 250 mm, working pressures from 10,5 bar to 25 bar and operating temperatures from −196 °C to +45 °C, according to class. NOTE Offshore liquefied natural gas (LNG) hose assemblies are also specified in EN 1474-2. EN 1474-2 does not only specify offshore use, but also ship to shore and other LNG transfer applications.

Tuyaux et flexibles multicouches (non vulcanisés) thermoplastiques pour le transfert de gaz de pétrole liquide et de gaz naturel liquéfié — Spécifications

General Information

Status
Published
Publication Date
31-Oct-2021
Current Stage
6060 - International Standard published
Start Date
01-Nov-2021
Completion Date
01-Nov-2021
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INTERNATIONAL ISO
STANDARD 27127
Second edition
2021-11
Thermoplastic multi-layer (non-
vulcanized) hoses and hose
assemblies for the transfer of liquid
petroleum gas and liquefied natural
gas — Specification
Tuyaux et flexibles multicouches (non vulcanisés) thermoplastiques
pour le transfert de gaz de pétrole liquide et de gaz naturel liquéfié —
Spécifications
Reference number
ISO 27127:2021(E)
© ISO 2021
---------------------- Page: 1 ----------------------
ISO 27127:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© 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.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
© ISO 2021 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 27127:2021(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ..................................................................................................................................................................................... 1

3 Terms and definitions .................................................................................................................................................................................... 2

4 Classification ............................................................................................................................................................................................................ 2

5 Materials and construction ...................................................................................................................................................................... 2

6 Dimensions ................................................................................................................................................................................................................3

6.1 Inside diameters, with tolerances and minimum bend radii ........................................................................ 3

6.2 Tolerance on length ............................................................................................................................................................................ 4

7 Performance requirements of hoses and hose assemblies .................................................................................... 4

7.1 Film and fabric ........................................................................................................................................................................................ 4

7.2 Hoses ............................................................................................................................................................................................................... 4

7.3 End fittings ................................................................................................................................................................................................ 5

7.4 Hose assemblies ..................................................................................................................................................................................... 5

7.5 Electrical continuity .......................................................................................................................................................................... 6

8 Test frequency ........................................................................................................................................................................................................ 6

9 Type tests ..................................................................................................................................................................................................................... 6

10 Marking ........................................................................................................................................... ............................................................................... 7

10.1 Hose marking ........................................................................................................................................................................................... 7

10.2 Hose assembly marking .................................................................................................................................................................. 7

Annex A (normative) Method of test for crush recovery ................................................................................................................ 8

Annex B (normative) Method of test for thermal ageing.............................................................................................................10

Annex C (normative) Method of test of fittings subjected to low temperatures ................................................11

Annex D (normative) Sequence of hydrostatic tests ........................................................................................................................12

Annex E (normative) Method of test for fitting security .............................................................................................................13

Annex F (normative) Method of test for leak tightness ................................................................................................................15

Annex G (normative) Method of test for flammability ..................................................................................................................16

Annex H (normative) Type and routine tests for hoses and hose assemblies ......................................................18

Annex I (informative) Batch tests for hoses and hose assemblies ....................................................................................19

Bibliography .............................................................................................................................................................................................................................20

iii
© ISO 2021 – All rights reserved
---------------------- Page: 3 ----------------------
ISO 27127:2021(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.

This second edition cancels and replaces the first edition (ISO 27127:2014), which has been technically

revised.
The main changes compared to the previous edition are as follows:
— the normative references have been updated and revised (Clause 2);
— the tolerance on the minimum temperature has been removed (Table 1);
— material numbers of helix have been added (Clause 5);
— the tolerance on inside diameter 150 has been modified (Table 2);

— change in length and twist at proof pressure has been modified to maximum working pressure

(Clause 7);
— flammability test has been added (Table 3);
— burst pressure has been added (Table 4);
— multi-components adhesive for hoses assemblies has been added (Clause 7);

— the electrical resistance requirement between end fittings has been modified (Clause 7);

— marking of the hose and assembly has been updated (Clause 10);

— in Annex A, thickness has been replaced by outside diameter (equals to the distance between the

two plates) and tolerances on test force have been added;
— in Annex D, the beginning of the test has been editorially revised;
© ISO 2021 – All rights reserved
---------------------- Page: 4 ----------------------
ISO 27127:2021(E)

— in Annex E, a cycle has been specified and the end of the tests has been editorially revised;

— Annex G on a method of test for flammability has been added;
— in Annex H and Annex I, the tests requirements have been updated.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www.iso.org/members.html.
© ISO 2021 – All rights reserved
---------------------- Page: 5 ----------------------
INTERNATIONAL STANDARD ISO 27127:2021(E)
Thermoplastic multi-layer (non-vulcanized) hoses and
hose assemblies for the transfer of liquid petroleum gas
and liquefied natural gas — Specification

WARNING — Persons using this document should be familiar with normal laboratory practice.

This document does not purport to address all the safety problems, if any, associated with its

use. It is the responsibility of the user to establish appropriate health and safety practices and to

determine the applicability of any other restrictions.
1 Scope

This document specifies requirements for two types of thermoplastic multi-layer (non-vulcanized)

transfer hoses and hose assemblies for carrying liquefied petroleum gas and liquefied natural gas. Each

type is subdivided into two classes, one for onshore duties, and the other for offshore.

— Class A hose is for use onshore.
— Class B hose is for use offshore.

This document is applicable for hose sizes from 25 mm to 250 mm, working pressures from 10,5 bar to

25 bar and operating temperatures from −196 °C to +45 °C, according to class.

NOTE Offshore liquefied natural gas (LNG) hose assemblies are also specified in EN 1474-2. EN 1474-2 does

not only specify offshore use, but also ship to shore and other LNG transfer applications.

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.

ISO 148-1, Metallic materials — Charpy pendulum impact test — Part 1: Test method

ISO 527-1, Plastics — Determination of tensile properties — Part 1: General principles

ISO 1043-1, Plastics — Symbols and abbreviated terms — Part 1: Basic polymers and their special

characteristics

ISO 1402:2021, Rubber and plastics hoses and hose assemblies — Hydrostatic testing

ISO 1817:2015, Rubber, vulcanized or thermoplastic — Determination of the effect of liquids

ISO 4671, Rubber and plastics hoses and hose assemblies — Methods of measurement of the dimensions of

hoses and the lengths of hose assemblies

ISO 7326:2016, Rubber and plastics hoses — Assessment of ozone resistance under static conditions

ISO 8031:2020, Rubber and plastics hoses and hose assemblies — Determination of electrical resistance

and conductivity
ISO 8330, Rubber and plastics hoses and hose assemblies — Vocabulary

ISO 10619-1, Rubber and plastics hoses and tubing — Measurement of flexibility and stiffness — Part 1:

Bending tests at ambient temperature
© ISO 2021 – All rights reserved
---------------------- Page: 6 ----------------------
ISO 27127:2021(E)

ISO 10619-2, Rubber and plastics hoses and tubing — Measurement of flexibility and stiffness — Part 2:

Bending tests at sub-ambient temperatures

ISO 13934-1, Textiles — Tensile properties of fabrics — Part 1: Determination of maximum force and

elongation at maximum force using the strip method
ISO 16143-3:2014, Stainless steels for general purposes — Part 3: Wire

EN 10088-3:2014, Stainless steels — Part 3: Technical delivery conditions for semi-finished products, bars,

rods, wire, sections and bright products of corrosion resisting steels for general purposes

3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 8330 apply.

ISO and IEC maintain terminology databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
4 Classification
Hoses shall be classified as given in Table 1 according to their
— usage:
— Class A hose is for use onshore,
— Class B hose is for use offshore,
— working pressure and
— working temperature range.
Table 1 — Pressure and temperature range
Class A Class B Class A Class B
Pressure/temperature Type 1 Type 1 Type 2 Type 2
MPa bar MPa bar MPa bar MPa bar
Maximum working pressure 2,50 25 2 20 1,30 13 1,05 10,5
Proof pressure 3,75 37,5 3 30 1,95 19,5 1,58 15,8
Minimum burst pressure 10 100 10 100 5,20 52 5,25 52,5
Working temperature range
−50 to +45 −50 to +45 −196 to +45 −196 to +45
(°C)
NOTE 1 1 bar = 0,1 MPa.

NOTE 2 Due to pressurization during test and operations, the temperature of the fluid can increase. The indicated

temperatures are measured at atmospheric pressure.
5 Materials and construction

Hoses shall be constructed as shown in Figure 1 and shall consist of the following:

a) Class A:

1) an internal wire helix of austenitic stainless steel conforming to EN 10088-3:2014, Table 2,

numbers 1.4306, 1.4401, 1.4404 or 1.4436 (X3CrNiMo 17-13-3) or ISO 16143-3:2014, Table 1

X2CrNi 19-11, X5CrNiMo 17-12-2, X2CrNiMo 17-12-2;
© ISO 2021 – All rights reserved
---------------------- Page: 7 ----------------------
ISO 27127:2021(E)

2) a multi-ply wall of layers of films and fabrics made of thermoplastics that in combination give

the required properties specified in Table 1 and provide a complete seal;

3) an external wire helix of austenitic stainless steel conforming to EN 10088-3:2014, Table 2,

numbers 1.4306, 1.4401, 1.4404 or 1.4436 (X3CrNiMo 17-13-3) or ISO 16143-3:2014, Table 1

X2CrNi 19-11, X5CrNiMo 17-12-2, X2CrNiMo 17-12-2;
b) Class B:

1) an internal wire helix of austenitic stainless steel conforming to EN 10088-3:2014, Table 2,

numbers 1.4306, 1.4401, 1.4404 or 1.4436 (X3CrNiMo 17-13-3) or ISO 16143-3:2014, Table 1

X2CrNi 19-11, X5CrNiMo 17-12-2, X2CrNiMo 17-12-2;

2) a multi-ply wall of layers of films and fabrics made of thermoplastics that in combination give

the required properties specified in Table 1 and provide a complete seal;

3) an external wire helix of austenitic stainless steel conforming to EN 10088-3:2014, Table 2,

numbers 1.4306, 1.4401, 1.4404 or 1.4436 (X3CrNiMo 17-13-3) or ISO 16143-3:2014, Table 1

X2CrNi 19-11, X5CrNiMo 17-12-2, X2CrNiMo 17-12-2.

NOTE By agreement between manufacturer and purchaser, the outer layer can have colour identification.

Key
1 internal wire
2 film
3 fabric
4 external wire
Figure 1 — Section of a typical thermoplastic multilayer hose
6 Dimensions
6.1 Inside diameters, with tolerances and minimum bend radii

When measured in accordance with ISO 4671, the values of the inside diameter of the hose shall conform

to Table 2. When tested by the method described in ISO 10619-1, the value of the minimum bend radius

shall be as given in Table 2. The hose shall show no sign of permanent deformation of the cross-section,

i.e. kinking.
© ISO 2021 – All rights reserved
---------------------- Page: 8 ----------------------
ISO 27127:2021(E)
Table 2 — Dimensions and minimum bend radius
Dimensions in millimetres, except where specified as “inch”
Inside diameter Tolerance Minimum bend radius
mm inch
25 1 ±1 150
32 1 1/4 ±1 175
38 1 1/2 ±1 175
40 1 1/2 ±1 200
50 2 ±1 200
65 2 1/2 ±2 200
75 3 ±2 250
80 3 ±2 250
100 4 ±2 500
125 5 ±2 550
150 6 ±3 660
200 8 ±3 910
250 10 ±3 2 50
...

INTERNATIONAL ISO
STANDARD 27127
Second edition
Thermoplastic multi-layer (non-
vulcanized) hoses and hose
assemblies for the transfer of liquid
petroleum gas and liquefied natural
gas — Specification
Tuyaux et flexibles multicouches (non vulcanisés) thermoplastiques
pour le transfert de gaz de pétrole liquide et de gaz naturel liquéfié —
Spécifications
PROOF/ÉPREUVE
Reference number
ISO 27127:2021(E)
ISO 2021
---------------------- Page: 1 ----------------------
ISO 27127:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© 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.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii PROOF/ÉPREUVE © ISO 2021 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 27127:2021(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 2

4 Classification ............................................................................................................................................................................................................ 2

5 Materials and construction ....................................................................................................................................................................... 2

6 Dimensions ................................................................................................................................................................................................................. 3

6.1 Inside diameters, with tolerances and minimum bend radii .......................................................................... 3

6.2 Tolerance on length ............................................................................................................................................................................. 4

7 Performance requirements of hoses and hose assemblies ...................................................................................... 4

7.1 Film and fabric ........................................................................................................................................................................................ 4

7.2 Hoses ............................................................................................................................................................................................................... 4

7.3 End fittings ................................................................................................................................................................................................. 5

7.4 Hose assemblies ..................................................................................................................................................................................... 5

7.5 Electrical continuity ........................................................................................................................................................................... 6

8 Test frequency ......................................................................................................................................................................................................... 6

9 Type tests ..................................................................................................................................................................................................................... 6

10 Marking .......................................................................................................................................................................................................................... 7

10.1 Hose marking ........................................................................................................................................................................................... 7

10.2 Hose assembly marking .................................................................................................................................................................. 7

Annex A (normative) Method of test for crush recovery ................................................................................................................. 8

Annex B (normative) Method of test for thermal ageing ..............................................................................................................10

Annex C (normative) Method of test of fittings subjected to low temperatures ..................................................11

Annex D (normative) Sequence of hydrostatic tests .........................................................................................................................12

Annex E (normative) Method of test for fitting security ...............................................................................................................13

Annex F (normative) Method of test for leak tightness..................................................................................................................15

Annex G (normative) Method of test for flammability ....................................................................................................................16

Annex H (normative) Type and routine tests for hoses and hose assemblies .......................................................18

Annex I (informative) Batch tests for hoses and hose assemblies ......................................................................................19

Bibliography .............................................................................................................................................................................................................................20

© ISO 2021 – All rights reserved PROOF/ÉPREUVE iii
---------------------- Page: 3 ----------------------
ISO 27127:2021(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.

This second edition cancels and replaces the first edition (ISO 27127:2014), which has been technically

revised.
The main changes compared to the previous edition are as follows:
— the normative references have been updated and revised (Clause 2);
— the tolerance on the minimum temperature has been removed (Table 1);
— material numbers of helix have been added (Clause 5);
— the tolerance on inside diameter 150 has been modified (Table 2);

— change in length and twist at proof pressure has been modified to maximum working pressure

(Clause 7);
— flammability test has been added (Table 3);
— burst pressure has been added (Table 4);
— multi-components adhesive for hoses assemblies has been added (Clause 7);

— the electrical resistance requirement between end fittings has been modified (Clause 7);

— marking of the hose and assembly has been updated (Clause 10);

— in Annex A, thickness has been replaced by outside diameter (equals to the distance between the

two plates) and tolerances on test force have been added;
— in Annex D, the beginning of the test has been editorially revised;
iv PROOF/ÉPREUVE © ISO 2021 – All rights reserved
---------------------- Page: 4 ----------------------
ISO 27127:2021(E)

— in Annex E, a cycle has been specified and the end of the tests has been editorially revised;

— Annex G on a method of test for flammability has been added;
— in Annex H and Annex I, the tests requirements have been updated.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/ members .html.
© ISO 2021 – All rights reserved PROOF/ÉPREUVE v
---------------------- Page: 5 ----------------------
INTERNATIONAL STANDARD ISO 27127:2021(E)
Thermoplastic multi-layer (non-vulcanized) hoses and
hose assemblies for the transfer of liquid petroleum gas
and liquefied natural gas — Specification

WARNING — Persons using this document should be familiar with normal laboratory practice.

This document does not purport to address all the safety problems, if any, associated with its

use. It is the responsibility of the user to establish appropriate health and safety practices and to

determine the applicability of any other restrictions.
1 Scope

This document specifies requirements for two types of thermoplastic multi-layer (non-vulcanized)

transfer hoses and hose assemblies for carrying liquefied petroleum gas and liquefied natural gas. Each

type is subdivided into two classes, one for onshore duties, and the other for offshore.

— Class A hose is for use onshore.
— Class B hose is for use offshore.

This document is applicable for hose sizes from 25 mm to 250 mm, working pressures from 10,5 bar to

25 bar and operating temperatures from −196 °C to +45 °C, according to class.

NOTE Offshore liquefied natural gas (LNG) hose assemblies are also specified in EN 1474-2. EN 1474-2 does

not only specify offshore use, but also ship to shore and other LNG transfer applications.

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.

ISO 148-1, Metallic materials — Charpy pendulum impact test — Part 1: Test method

ISO 527-1, Plastics — Determination of tensile properties — Part 1: General principles

ISO 1043-1, Plastics — Symbols and abbreviated terms — Part 1: Basic polymers and their special

characteristics

ISO 1402:2021, Rubber and plastics hoses and hose assemblies — Hydrostatic testing

ISO 1817:2015, Rubber, vulcanized or thermoplastic — Determination of the effect of liquids

ISO 4671, Rubber and plastics hoses and hose assemblies — Methods of measurement of the dimensions of

hoses and the lengths of hose assemblies

ISO 7326:2016, Rubber and plastics hoses — Assessment of ozone resistance under static conditions

ISO 8031:2020, Rubber and plastics hoses and hose assemblies — Determination of electrical resistance

and conductivity
ISO 8330, Rubber and plastics hoses and hose assemblies — Vocabulary

ISO 10619-1, Rubber and plastics hoses and tubing — Measurement of flexibility and stiffness — Part 1:

Bending tests at ambient temperature
© ISO 2021 – All rights reserved PROOF/ÉPREUVE 1
---------------------- Page: 6 ----------------------
ISO 27127:2021(E)

ISO 10619-2, Rubber and plastics hoses and tubing — Measurement of flexibility and stiffness — Part 2:

Bending tests at sub-ambient temperatures

ISO 13934-1, Textiles — Tensile properties of fabrics — Part 1: Determination of maximum force and

elongation at maximum force using the strip method
ISO 16143-3:2014, Stainless steels for general purposes — Part 3: Wire

EN 10088-3:2014, Stainless steels — Part 3: Technical delivery conditions for semi-finished products, bars,

rods, wire, sections and bright products of corrosion resisting steels for general purposes

3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 8330 apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
4 Classification
Hoses shall be classified as given in Table 1 according to their
— usage:
— Class A hose is for use onshore,
— Class B hose is for use offshore,
— working pressure and
— working temperature range.
Table 1 — Pressure and temperature range
Class A Class B Class A Class B
Pressure/temperature Type 1 Type 1 Type 2 Type 2
MPa bar MPa bar MPa bar MPa bar
Maximum working pressure 2,50 25 2 20 1,30 13 1,05 10,5
Proof pressure 3,75 37,5 3 30 1,95 19,5 1,58 15,8
Minimum burst pressure 10 100 10 100 5,20 52 5,25 52,5
Working temperature range
−50 to +45 −50 to +45 −196 to +45 −196 to +45
(°C)
NOTE 1 1 bar = 0,1 MPa.

NOTE 2 Due to pressurization during test and operations, the temperature of the fluid can increase. The indicated

temperatures are measured at atmospheric pressure.
5 Materials and construction

Hoses shall be constructed as shown in Figure 1 and shall consist of the following:

a) Class A:

1) an internal wire helix of austenitic stainless steel conforming to EN 10088-3:2014, Table 2,

numbers 1.4306, 1.4401, 1.4404 or 1.4436 (X3CrNiMo 17-13-3) or ISO 16143-3:2014, Table 1

X2CrNi 19-11, X5CrNiMo 17-12-2, X2CrNiMo 17-12-2;
2 PROOF/ÉPREUVE © ISO 2021 – All rights reserved
---------------------- Page: 7 ----------------------
ISO 27127:2021(E)

2) a multi-ply wall of layers of films and fabrics made of thermoplastics that in combination give

the required properties specified in Table 1 and provide a complete seal;

3) an external wire helix of austenitic stainless steel conforming to EN 10088-3:2014, Table 2,

numbers 1.4306, 1.4401, 1.4404 or 1.4436 (X3CrNiMo 17-13-3) or ISO 16143-3:2014, Table 1

X2CrNi 19-11, X5CrNiMo 17-12-2, X2CrNiMo 17-12-2;
b) Class B:

1) an internal wire helix of austenitic stainless steel conforming to EN 10088-3:2014, Table 2,

numbers 1.4306, 1.4401, 1.4404 or 1.4436 (X3CrNiMo 17-13-3) or ISO 16143-3:2014, Table 1

X2CrNi 19-11, X5CrNiMo 17-12-2, X2CrNiMo 17-12-2;

2) a multi-ply wall of layers of films and fabrics made of thermoplastics that in combination give

the required properties specified in Table 1 and provide a complete seal;

3) an external wire helix of austenitic stainless steel conforming to EN 10088-3:2014, Table 2,

numbers 1.4306, 1.4401, 1.4404 or 1.4436 (X3CrNiMo 17-13-3) or ISO 16143-3:2014, Table 1

X2CrNi 19-11, X5CrNiMo 17-12-2, X2CrNiMo 17-12-2.

NOTE By agreement between manufacturer and purchaser, the outer layer can have colour identification.

Key
1 internal wire
2 film
3 fabric
4 external wire
Figure 1 — Section of a typical thermoplastic multilayer hose
6 Dimensions
6.1 Inside diameters, with tolerances and minimum bend radii

When measured in accordance with ISO 4671, the values of the inside diameter of the hose shall conform

to Table 2. When tested by the method described in ISO 10619-1, the value of the minimum bend radius

shall be as given in Table 2. The hose shall show no sign of permanent deformation of the cross-section,

i.e. kinking.
© ISO 2021 – All rights reserved PROOF/ÉPREUVE 3
---------------------- Page: 8 ----------------------
ISO 27127:2021(E)
Table 2 — Dimensions and minimum bend radius
Dimensions in millimetres, except where specified as “inch”
Inside diameter Tolerance Minimum bend radius
mm inch
25 1 ±1 150
32 1.1/4 ±1 175
38 1.1/2 ±1 175
40 1.1/2 ±1 200
50 2 ±1 200
65 2.1/2 ±2 200
75 3 ±2 250
80 3 ±2 250
100 4 ±2 500
125 5 ±2 550
150 6 ±3 660
200 8 ±3 910
250 10 ±3 2 500
300 12 ±3 2 500
6.2 Tolerance on length
When tested
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