ISO 27127:2014

INTERNATIONAL ISO
STANDARD 27127
First edition
2014-07-01
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 27127:2014(E)
©
ISO 2014

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ISO 27127:2014(E)

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ISO 27127:2014(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 . 6
10.1 Hose marking . 6
10.2 Hose assembly marking . 7
Annex A (normative) Crush recovery test . 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) Type and routine tests for hoses and hose assemblies .16
Annex H (informative) Batch tests for hoses and hose assemblies.17
Bibliography .18
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ISO 27127:2014(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 on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers
to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 45, Rubber and rubber products, Subcommittee
SC 1, Rubber and plastics hoses and hose assemblies.
ISO 27127 is based on EN 13766:2010 with the following modifications to comply with the requirements
of ISO/TC 45/SC 1:
— the pressure unit “bar” has been replaced by “MPa (bar)”;
— all references to EN or EN/ISO standards were replaced by references to ISO standards wherever
possible;
— Clause 2, references have been amended;
— 6.1, Table 2, have been amended (tolerance for ID 150 only, the other tolerances are already sufficient
to accommodate the required changes of ID to include inch size mandrels);
— 7.2, Table 3, now requires the change in length and twist to be measured at maximum working
pressure instead of proof pressure and Annex D has been amended accordingly;
— 7.4, Table 4, the reference to the test method clause, to determine electrical resistance between
fittings according to ISO 8031 has been corrected;
— Clause 10, the marking has been amended according ISO/TC 45/SC 1 remarks.
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INTERNATIONAL STANDARD ISO 27127:2014(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 International Standard should be familiar with normal laboratory
practice. This International Standard 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 ensure compliance with any national regulatory conditions.
1 Scope
This International Standard 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 International Standard 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 LNG hose assemblies are also specified in EN 1474–2.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. 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 4671, Rubber and plastics hoses and hose assemblies — Methods of measurement of the dimensions of
hoses and the lengths of hose assemblies
ISO 8031:2009, Rubber and plastics hoses and hose assemblies — Determination of electrical resistance and
conductivity
ISO 8330, Rubber and plastics hoses and hose assemblies — Vocabulary
ISO 1043-1, Plastics — Symbols and abbreviated terms — Part 1: Basic polymers and their special
characteristics
ISO 1402:2009, Rubber and plastics hoses and hose assemblies — Hydrostatic testing
ISO 10619-1, Rubber and plastics hoses and tubing — Measurement of flexibility and stiffness — Part 1:
Bending tests at ambient temperature
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
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ISO 27127:2014(E)

ISO 16143-3, Stainless steels for general purposes — Part 3: Wire
EN 10088-3, 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.
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 ± 3 to +45 −50 ± 3 to +45 −196 ± 5 to +45 −196 ± 5 to +45
(°C)
NOTE 1 1 bar = 0,1 MPa.
NOTE 2 Due to pressurization during test and operations, the temperature of the fluid could 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, Table 4, numbers
1,443 6 (X3CrNiMo 17-13-3) or ISO 16143-3, 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;
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ISO 27127:2014(E)

3) an external wire helix of austenitic stainless steel conforming to EN 10088-3, Table 4, numbers
1,443 6 (X3CrNiMo 17-13-3) or ISO 16143-3, 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, Table 4, numbers
1,443 6 (X3CrNiMo 17-13-3) or ISO 16143-3, 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, Table 4, numbers
1,443 6 (X3CrNiMo 17-13-3) or ISO 16143-3, Table 1 X2CrNi 19-11, X5CrNiMo 17-12-2, X2CrNiMo
17-12-2.
NOTE By agreement between manufacturer and purchaser, the outer layer may have colour identification.
4
1
2
3
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 internal 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.
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ISO 27127:2014(E)

Table 2 — Dimensions and minimum bend radius
Dimensions in millimetres, except where
...