Rubber hoses and hose assemblies, wire or textile reinforced, for dredging applications - Specification (ISO 28017:2018)

This document specifies requirements for two types, seven classes and three grades of wire- or textilereinforced
dredging hoses with nominal sizes ranging from 100 to 1 200. Within each class, all grades
and sizes have the same maximum working pressure. Such hoses are suitable for the delivery or suction
of seawater or freshwater mixed with silt, sand, coral and small stones with a specific gravity in the
range from 1,0 to 2,3 at ambient temperatures ranging from −10 °C to +40 °C.
This document covers two types of hose, as follows:
— type 1: floating type, for delivery only, which includes flotation material to give the hose buoyancy;
— type 2: submarine type for delivery and suction.
This document does not specify requirements concerning the service life of hoses or hose assemblies.
Specifying such requirements is the responsibility of the customer, in consultation with the hose
manufacturer.

Gummischläuche und Schlauchleitungen, Draht- oder Textilverstärkt für Nassbaggeranwendungen - Anforderung (ISO 28017:2018)

Tuyaux et flexibles en caoutchouc, à armature textile ou métallique, pour des applications de dragage - Spécifications (ISO 28017:2018)

ISO 28017:2018 spécifie les exigences pour deux types, sept classes et trois qualités de tuyaux de dragage à armature métallique ou textile, de dimensions nominales allant de 100 à 1 200. Dans chaque classe, toutes les qualités et dimensions ont la même pression maximale de service. Ces tuyaux sont adaptés pour le refoulement ou l'aspiration d'eau de mer ou d'eau douce mélangée à du limon, du sable, des coraux et de petites pierres ayant une densité relative de 1,0 à 2,3 à des températures ambiantes comprises entre −10 °C et +40 °C.
ISO 28017:2018 traite les deux types de tuyaux suivants:
- type 1: type flottant, pour le refoulement uniquement, incluant un matériau de flottaison permettant au tuyau de flotter;
- type 2: type sous-marin, pour le refoulement ou l'aspiration.
ISO 28017:2018 ne spécifie pas d'exigences concernant la durée de vie des tuyaux ou des flexibles. La spécification de ce type d'exigences relève de la responsabilité du client, en concertation avec le fabricant de tuyaux.

Gumene cevi in cevni priključki, ojačeni z žicami ali tekstilom, za uporabo v vodnem bagru - Specifikacija (ISO 28017:2018)

Ta dokument določa zahteve za dve vrsti, sedem razredov in tri stopnje s tekstilom ojačenih cevi za črpanje vode z nazivno velikostjo od 100 do 1200. Znotraj vsakega razreda imajo vsi tipi in velikosti enak najvišji delovni tlak. Take cevi so primerne za dostavo ali sesanje morske ali sladke vode, pomešane z ilovico, peskom, koralami in kamenčki s specifično težnostjo med 1,0 in 2,3 pri temperaturi okolja od −10 °C do +40 °C.
Ta dokument zajema dva tipa cevi, kot sledi:
– tip 1: lebdeči tip, namenjen le dostavi, ki vključuje plavajoč material, zaradi katerega cev ne potone;
– tip 2: podvodni tip za dostavo in sesanje.
Ta dokument ne določa zahtev v zvezi z življenjsko dobo cevi ali sestavo cevi.
Te zahteve mora določiti stranka ob posvetovanju s proizvajalcem cevi.

General Information

Status
Published
Public Enquiry End Date
16-Nov-2017
Publication Date
13-Mar-2018
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
09-Mar-2018
Due Date
14-May-2018
Completion Date
14-Mar-2018

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SLOVENSKI STANDARD
SIST EN ISO 28017:2018
01-maj-2018
1DGRPHãþD
SIST EN ISO 28017:2012
SIST EN ISO 28017:2012/A1:2015
*XPHQHFHYLLQFHYQLSULNOMXþNLRMDþHQL]åLFDPLDOLWHNVWLORP]DXSRUDERY
YRGQHPEDJUX6SHFLILNDFLMD ,62

Rubber hoses and hose assemblies, wire or textile reinforced, for dredging applications -

Specification (ISO 28017:2018)
Gummischläuche und Schlauchleitungen, Draht- oder Textilverstärkt für
Nassbaggeranwendungen - Anforderung (ISO 28017:2018)
Tuyaux et flexibles en caoutchouc, à armature textile ou métallique, pour des
applications de dragage - Spécifications (ISO 28017:2018)
Ta slovenski standard je istoveten z: EN ISO 28017:2018
ICS:
53.100 Stroji za zemeljska dela Earth-moving machinery
83.140.40 Gumene cevi Hoses
SIST EN ISO 28017:2018 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 28017:2018
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SIST EN ISO 28017:2018
EN ISO 28017
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2018
EUROPÄISCHE NORM
ICS 23.040.70 Supersedes EN ISO 28017:2011
English Version
Rubber hoses and hose assemblies, wire or textile
reinforced, for dredging applications - Specification (ISO
28017:2018)

Tuyaux et flexibles en caoutchouc, à armature textile Gummischläuche und Schlauchleitungen, Draht- oder

ou métallique, pour des applications de dragage - Textilverstärkt für Nassbaggeranwendungen -

Spécifications (ISO 28017:2018) Anforderung (ISO 28017:2018)
This European Standard was approved by CEN on 9 March 2018.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, 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

© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 28017:2018 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 28017:2018
EN ISO 28017:2018 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

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SIST EN ISO 28017:2018
EN ISO 28017:2018 (E)
European foreword

This document (EN ISO 28017:2018) has been prepared by Technical Committee ISO/TC 45 “Rubber

and plastics hoses and hose assemblies” 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 August 2018, and conflicting national standards shall

be withdrawn at the latest by August 2018.

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 28017:2011.

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, Former Yugoslav Republic of Macedonia,

France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,

Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
Endorsement notice

The text of ISO 28017:2018 has been approved by CEN as EN ISO 28017:2018 without any modification.

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SIST EN ISO 28017:2018
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SIST EN ISO 28017:2018
INTERNATIONAL ISO
STANDARD 28017
Third edition
2018-02
Rubber hoses and hose assemblies,
wire or textile reinforced, for dredging
applications — Specification
Tuyaux et flexibles en caoutchouc, à armature textile ou métallique,
pour des applications de dragage — Spécifications
Reference number
ISO 28017:2018(E)
ISO 2018
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SIST EN ISO 28017:2018
ISO 28017:2018(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2018

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, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 28017:2018
ISO 28017:2018(E)
Contents Page

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

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

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

3  Terms and definitions ..................................................................................................................................................................................... 1

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

4.1 Classes ............................................................................................................................................................................................................ 2

4.2 Grades ............................................................................................................................................................................................................. 2

5 Materials and construction ....................................................................................................................................................................... 3

5.1 Hoses .............................................................................................................................................................................................................. 3

5.2 Flotation material ................................................................................................................................................................................. 3

5.3 End fittings and end connections ............................................................................................................................................ 4

6 Dimension and tolerances .......................................................................................................................................................................... 4

6.1 Diameters .................................................................................................................................................................................................... 4

6.2 Hose assembly length ........................................................................................................................................................................ 5

7 Physical properties ............................................................................................................................................................................................ 5

7.1 Rubber compounds ............................................................................................................................................................................. 5

7.1.1 Abrasion resistance of lining ................................................................................................................................. 5

7.1.2 Tear strength of lining ................................................................................................................................................. 5

7.1.3 Rebound resilience of lining .................................................................................................................................. 5

7.1.4 Ozone resistance of cover ........................................................................................................................................ 5

7.2 Performance requirements .......................................................................................................................................................... 6

7.2.1 Hydrostatic requirements ........................................................................................................................................ 6

7.2.2 Change in length ............................................................................................................................................................... 6

7.2.3 Bending test ......................................................................................................................................................................... 7

7.2.4 Leakage of hose assemblies (proof pressure test).............................................................................. 7

7.2.5 Minimum reserve buoyancy .................................................................................................................................. 7

7.2.6 Flotation material recovery .................................................................................................................................... 8

7.2.7 Adhesion between components ......................................................................................................................... 8

7.2.8 Adhesion between end fitting and lining .................................................................................................... 8

7.2.9 Minimum tensile strength of empty hose assemblies ..................................................................... 9

7.2.10 Vacuum resistance .......................................................................................................................................................... 9

7.2.11 Dimensions of flange and other connections .......................................................................................... 9

7.2.12 Visual examination ......................................................................................................................................................... 9

7.3 Frequency of testing ........................................................................................................................................................................... 9

8  Test certificate or report ...........................................................................................................................................................................10

9 Marking .......................................................................................................................................................................................................................10

10 Recommendations for packaging and storage ...................................................................................................................10

Annex A (normative) Type tests and routine tests .............................................................................................................................11

Annex B (normative) Measurement of adhesion between end fitting and lining ...............................................12

Annex C (normative) Hose assembly tensile-strength test ........................................................................................................15

Bibliography .............................................................................................................................................................................................................................18

© ISO 2018 – All rights reserved iii
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SIST EN ISO 28017:2018
ISO 28017:2018(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 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 the following

URL: 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 third edition cancels and replaces the second edition (ISO 28017:2011), of which it constitutes

a minor revision. The changes compared to previous edition are as follows: the Amendment

ISO 28017:2011/Amd 1:2015 has been incorporated and the normative references have been updated.

iv © ISO 2018 – All rights reserved
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SIST EN ISO 28017:2018
INTERNATIONAL STANDARD ISO 28017:2018(E)
Rubber hoses and hose assemblies, wire or textile
reinforced, for dredging applications — Specification
1 Scope

This document specifies requirements for two types, seven classes and three grades of wire- or textile-

reinforced dredging hoses with nominal sizes ranging from 100 to 1 200. Within each class, all grades

and sizes have the same maximum working pressure. Such hoses are suitable for the delivery or suction

of seawater or freshwater mixed with silt, sand, coral and small stones with a specific gravity in the

range from 1,0 to 2,3 at ambient temperatures ranging from −10 °C to +40 °C.
This document covers two types of hose, as follows:

— type 1: floating type, for delivery only, which includes flotation material to give the hose buoyancy;

— type 2: submarine type for delivery and suction.

This document does not specify requirements concerning the service life of hoses or hose assemblies.

Specifying such requirements is the responsibility of the customer, in consultation with the hose

manufacturer.
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 34-2:2015, Rubber, vulcanized or thermoplastic — Determination of tear strength — Part 2: Small

(Delft) test pieces
ISO 1402, Rubber and plastics hoses and hose assemblies — Hydrostatic testing

ISO 1431-1, Rubber, vulcanized or thermoplastic — Resistance to ozone cracking — Part 1: Static and

dynamic strain testing

ISO 4649:2010, Rubber, vulcanized or thermoplastic — Determination of abrasion resistance using a

rotating cylindrical drum device

ISO 4662:2017, Rubber, vulcanized or thermoplastic — Determination of rebound resilience

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

hoses and the lengths of hose assemblies

ISO 7233:2016, Rubber and plastics hoses and hose assemblies — Determination of resistance to vacuum

ISO 8033, Rubber and plastics hoses — Determination of adhesion between components

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
3  Terms and definitions

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

© ISO 2018 – All rights reserved 1
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SIST EN ISO 28017:2018
ISO 28017:2018(E)

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  Classification
4.1 Classes

Seven classes of hose are specified, distinguished by their maximum working pressure, of nominal sizes

from 100 to 1 200, as shown in Table 1.
Table 1 — Classes and corresponding maximum working pressures and nominal sizes
Class
5 10 15 20 25 30 40
Maximum working pressure, MWP
Nominal size bar
5 10 15 20 25 30 40
MPa
0,5 1,0 1,5 2,0 2,5 3,0 4,0
100 X X X X X X X
150 X X X X X X X
200 X X X X X X X
250 X X X X X X N/A
300 X X X X X X N/A
350 X X X X X X N/A
400 X X X X X X N/A
450 X X X X X X N/A
500 X X X X X X N/A
550 X X X X X X N/A
600 X X X X X X N/A
650 X X X X X X N/A
700 X X X X X X N/A
750 X X X X X X N/A
800 X X X X X X N/A
850 X X X X X X N/A
900 X X X X X X N/A
1 000 X X X X X X N/A
1 100 X X X X X X N/A
1 200 X X X X X N/A N/A
X: Applicable
N/A: Not applicable
4.2 Grades

Type 2 hoses are classified into three grades, A, B and C, according to their construction (number of

reinforcing helical wires), as shown in Table 2.
Type 1 hoses are not divided into grades.
2 © ISO 2018 – All rights reserved
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SIST EN ISO 28017:2018
ISO 28017:2018(E)
Table 2 — Grades
Construction and purpose
Type Grade
Number of reinforcing
Purpose
wires
1 — 0 Delivery only
A 2 Delivery or suction
2 B 1 Delivery or suction
C 0 Delivery only

The types and grades available in each class (i.e. for each maximum working pressure) are as shown in

Table 3.
Table 3 — Types and grades available in each class
Class
5 10 15 20 25 30 40
Maximum working pressure, MWP
Type Grade bar
5 10 15 20 25 30 40
MPa
0,5 1,0 1,5 2,0 2,5 3,0 4,0
1 — X X X X X X X
A X X X N/A N/A N/A N/A
2 B X X X N/A N/A N/A N/A
C X X X X X X X
X: Applicable
N/A: Not applicable
5 Materials and construction
5.1 Hoses

Type 1 hose assemblies shall consist of an abrasion-resistant rubber lining, one or more layers of steel

or textile reinforcement, a textile-reinforced rubber undercover, a flexible closed-cell flotation material

integrally fitted round the hose body as described in 5.2, an abrasion- and weather-resistant rubber or

thermoplastic outer cover (which, in the case of a rubber cover, can include one or two textile breaker

layers), and end fittings as described in 5.3 on both ends.

Type 2 hose assemblies shall consist of an abrasion-resistant rubber lining, one or more layers of steel

or textile reinforcement, a textile-reinforced rubber, full rubber or thermoplastic cover at least 6 mm

thick for hoses of nominal size less than 500, at least 10 mm thick for hoses of nominal size in the range

from 500 to 850 inclusive and at least 12 mm thick for hoses of nominal size in the range from 900 to

1 200 inclusive, and end fittings as described in 5.3 on both ends. The lining thickness shall be at least

8 mm for nominal sizes up to and including 200, at least 10 mm for nominal sizes 250 to 500 inclusive,

at least 12 mm for nominal sizes 550 to 800 inclusive and at least 16 mm for nominal sizes 850 to 1 200

inclusive.
5.2 Flotation material

The closed-cell flotation material used in type 1 hose assemblies shall adhere firmly both to the hose

body and to the outer cover so that it cannot move or tend to become detached in service. At the ends

of the hose, a space shall be provided to facilitate the insertion of connection bolts and to allow the use

© ISO 2018 – All rights reserved 3
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SIST EN ISO 28017:2018
ISO 28017:2018(E)

of mechanical tools for tightening nuts on the bolts. The flotation material shall be distributed over

the whole length of the hose assembly in such a manner that the hose assembly floats evenly when

connected to other assemblies in a string. This does not apply to hose assemblies for special applications

(e.g. the end of a string, tapered hose, etc.).
5.3  End fittings and end connections

End fittings shall be mechanically and chemically bonded to the hose body. With hoses intended for

delivery use only, clamped-on and swaged-on nipples are not acceptable, but such nipples may be utilized

with hoses intended for suction use. Alternatively, flanged end connections built up of hose reinforcement,

lining and cover material are acceptable provided they are additionally reinforced by steel stiffening

rings to avoid distortion when the connection bolts are tightened. All hose assemblies shall be fitted with

either end fittings or flanged end connections unless otherwise required by the end user.

6 Dimension and tolerances
6.1 Diameters

When measured in accordance with ISO 4671, the inside diameters of hoses shall conform to the values

given in Table 4.

When measured in accordance with ISO 4671, the outside diameters of hoses shall conform to the

values specified by the customer.

NOTE For hoses manufactured on mandrels with diameters in inches, the tolerances on the inside diameter

are the same as those given for hoses with diameters in metric units in Table 4 (i.e. ± 3 mm for sizes 4 in to 8 in

inclusive, ± 4 mm for 10 in to 12 in inclusive, ± 5 mm for 14 in to 30 in inclusive, ± 6 mm for 32 in to 40 in inclusive

and ± 7 mm for 44 in and 48 in).
Table 4 — Diameters of hoses
Actual inside diameter
Nominal size
min. max.
100 97 103
150 147 153
200 197 203
250 246 254
300 296 304
350 345 355
400 395 405
450 445 455
500 495 505
550 545 555
600 595 605
650 645 655
700 695 705
750 745 755
800 794 806
850 844 856
900 894 906
4 © ISO 2018 – All rights reserved
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SIST EN ISO 28017:2018
ISO 28017:2018(E)
Table 4 (continued)
Actual inside diameter
Nominal size
min. max.
1 000 994 1 006
1 100 1 093 1 107
1 200 1 193 1 207
6.2 Hose assembly length

The hose assembly length shall be determined according to the conditions of use. Unless otherwise

agreed between the customer and the manufacturer, the tolerances on the hose assembly length shall

be +2 % and −2 %.
7 Physical properties
7.1 Rubber compounds
7.1.1 Abrasion resistance of lining
7.1.1.1 Test pieces

Test pieces shall be prepared from sheets of lining compound (of cure state equivalent to that of the

hose) of thickness at least 6 mm. The method of preparation shall be as specified in ISO 4649.

7.1.1.2 Abrasion resistance

When the test is carried out in accordance with ISO 4649:2010, method A, the relative volume loss,

ΔV , shall not be greater than 200 mm . This test is required each time type testing is carried out and

rel

when a change in lining compound is made, and shall be regularly repeated in accordance with the

manufacturer’s quality control procedures.
7.1.2 Tear strength of lining

When tested in accordance with ISO 34-2:2015, measuring the test pieces in accordance with method 2

(ISO 34-2:2015, 6.2.2.3), the tear strength, F , shall be greater than 35 N. This test is required for each

batch of lining compound (which might be used to manufacture more than one hose). Alternatively,

the tear strength of the lining may be determined in accordance with ISO 34-1:2015, method B,

procedure (b), in which case the minimum required value is 35 kN/m.
7.1.3 Rebound resilience of lining

For certain slurries containing a large quantity of sharp gravel, broken rocks or coral, the hose user

can require a lining with high rebound resilience properties. In this case, the lining compound shall be

tested for rebound resilience in accordance with ISO 4662:2017, Clause 5 (the pendulum method). A

recommended minimum rebound resilience value is 35 %.
7.1.4 Ozone resistance of cover
7.1.4.1 Test pieces

Test pieces shall be prepared from sheets of cover compound (of cure state equivalent to that of the

hose) of thickness at least 2 mm. The method of preparation shall be as specified in ISO 1431-1. For

© ISO 2018 – All rights reserved 5
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SIST EN ISO 28017:2018
ISO 28017:2018(E)

type 1 hoses, it is the compound from which the outer cover (that surrounds the flotation material) is

made which is tested.
7.1.4.2 Ozone resistance

When the test is carried out in accordance with ISO 1431-1, no cracking or other deterioration of the

test pieces shall be visible under × 2 magnification after 72 h at 40 °C and 20 % strain in 50 pphm

ozone. This test is required each time type testing is carried out and shall be repeated whenever a

change in compound is made and regularly afterwards when required by the manufacturer’s quality

control procedures.
7.2 Performance requirements
7.2.1 Hydrostatic requirements

When determined in accordance with ISO 1402, the proof pressure and the minimum burst pressure of

hoses and hose assemblies shall conform to the values given in Table 5.

The theoretical minimum burst pressure for each hose assembly of each design in a manufacturer’s

range shall be calculated and included in the manufacturer’s sales documentation for the information

of potential users.

Burst testing shall be carried out on a mid-range or larger nominal size of each design in the

manufacturer’s range. The minimum burst pressure of other sizes of the same design, construction

(with a reinforcement type identical to that of the hose assembly tested but not necessarily the same

number of plies), materials and method of manufacture shall be determined by calculation. However,

this is an acceptable method only if calculation, before testing, of the burst pressure of the hose assembly

tested gives a result which is not more than 5 % higher than the actual measured burst pressure. If the

calculated burst pressure is more than 5 % higher, the minimum burst pressure of all other sizes in the

range shall be determined by testing.

For type 1 hoses, the burst test shall be carried out on a hose assembly without its flotation material.

Table 5 — Maximum working pressure, proof pressure and minimum burst pressure
Maximum Proof pressure Minimum burst pressure
working
Class Type 1 Type 2 Type 1 Type 2
pressure
MPa (bar) MPa (bar) MPa (bar) MPa (bar) MPa (bar)
5 0,5 (5) 0,5 (5) 0,5 (5) 1,5 (15) 1,5 (15)
10 1,0 (10) 1,0 (10) 1,0 (10) 3,0 (30) 3,0 (30)
15 1,5 (15) 1,5 (15) 1,5 (15) 4,5 (45) 4,5 (45)
20 2,0 (20) 2,0 (20) 2,0 (20) 6,0 (60) 6,0 (60)
25 2,5 (25) 2,5 (25) 2,5 (25) 7,5 (75) 7,5 (75)
30 3,0 (30) 3,0 (30) 3,0 (30) 9,0 (90) 9,0 (90)
40 4
...

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