ISO/DIS 16301.2

Rubber and plastics hoses and hose assemblies, wire- or textile-reinforced, for hydraulic jacks and for hydraulic power units used in hydraulic tools -- Specification

Tuyaux et flexibles en caoutchouc et en plastique, à armature textile ou métallique, pour vérin et groupes moteurs hydrauliques utilisés dans des outils hydrauliques -- Spécifications

Standards Content (sample)

DRAFT INTERNATIONAL STANDARD
ISO/DIS 16301.2
ISO/TC 45/SC 1 Secretariat: DSM
Voting begins on: Voting terminates on:
2013-08-05 2013-10-05
Rubber and plastics hoses and hose assemblies, wire- or
textile-reinforced, for hydraulic jacks and for hydraulic
power units used in hydraulic tools — Specification

Tuyaux et flexibles en caoutchouc et en plastique, à armature textile ou métallique, pour des applications

de vérin hydraulique — Spécifications
ICS: 83.140.40;23.040.70
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
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USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 16301:2013(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION. ISO 2013
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ISO/DIS 16301.2:2013(E)
Copyright notice

This ISO document is a Draft International Standard and is copyright-protected by ISO. Except as

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ii © ISO 2013 – All rights reserved
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ISO/DIS 16301.2
Contents Page

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

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

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

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

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

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

6 Dimensions and tolerances .................................................................................................................. 3

7 Physical properties ............................................................................................................................... 4

8 Type tests ............................................................................................................................................... 7

9 Marking ................................................................................................................................................... 8

10 Test report .............................................................................................................................................. 8

11 Recommendations for packaging and storage .................................................................................. 8

Annex A (normative) Test frequency ................................................................................................................ 9

Annex B (informative) Production tests ......................................................................................................... 10

Annex C (informative) Recommendations for lengths of supplied hoses and hose assemblies ............. 11

C.1 Hoses .................................................................................................................................................... 11

C.2 Hose assemblies ................................................................................................................................. 11

Annex D (normative) Test method for electrical conductivity ..................................................................... 12

© ISO 2013 – All rights reserved iii
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ISO/DIS 16301.2
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.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of technical committees is to prepare International Standards. Draft International Standards

adopted by the technical committees are circulated to the member bodies for voting. Publication as an

International Standard requires approval by at least 75 % of the member bodies casting a vote.

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.

ISO 16301 was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee

SC 1, Hoses (rubber and plastics).
iv © ISO 2013 – All rights reserved
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DRAFT INTERNATIONAL STANDARD ISO/DIS 16301.2
Rubber and plastics hoses and hose assemblies, wire- or
textile-reinforced, for hydraulic-jacks and hydraulic power units
used in hydraulic tool applications — Specification
1 Scope

This International Standard specifies the requirements for three classes, two types and two grades of wire or

textile reinforced hydraulic jack hose and hose assemblies of sizes ranging from 5 to 25. They are suitable for

use with hydraulic fluids HH, HL, HM, HR and HV in accordance with ISO 6743-4 at temperature ranging from

-40 to +70 °C.

The standard does not include requirements for the connection ends. It is limited to the performance of hoses

and hose assemblies. The hose assembly maximum working pressure is regulated by the lowest maximum

working pressure of the components.

NOTE It is the responsibility of the user, in consultation with the hose manufacturer, to establish the compatibility of

the hose with the fluid to be used.
2 Normative references

The following referenced documents are indispensable for the application 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 1402, Rubber and plastics hoses and hose assemblies — Hydrostatic testing

ISO 1817, 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 length of hose assemblies

ISO 6743-4, Lubricants, industrial oils and related products (class L) — Classification — Part 4: Family H

(Hydraulic systems)

ISO 6803, Rubber or plastics hoses and hose assemblies — Hydraulic pressure impulse test without flexing

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

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

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

ISO 8331, Rubber and plastics hoses and hose assemblies —Guidelines for selection, storage, use and

maintenance

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

Bending tests at sub-ambient temperatures
© ISO 2013 – All rights reserved 1
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ISO/DIS 16301.2
3 Terms and definitions

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

4 Classification
4.1 Classes

Three classes of hose are specified, distinguished by their maximum working pressure and six sizes specified

by Nominal size as shown in Table 1.
Table 1 — Classes and nominal size
Class 70 100 140
Maximum working
70 100 140
pressure (MPa)
Maximum working
700 1 000 1 400
pressure (bar)
Nominal size
5 X X X
6,3 X X X
10 X X X
12,5 X X X
19 X X X
25 X X X
NOTE X = Applicable, N/A = Not applicable
4.2 Types
Each class of hose is divided into two types depending on usage as below.

- Type A: General jack system use — light service — with 2:1 burst to maximum working pressure ratio and

impulse durability is specified in clause 7.2.4.

- Type B: Special hydraulic system use — Heavy duty service — with 4:1 burst to maximum working pressure

ratio and impulse durability is specified in clause 7.2.5.
4.3 Grades
All types are classified on their electrical properties:
a) Grade 1, no electrical requirements.
b) Grade 2, “non-conductive”

NOTE Non-conductive means the current reading shall be no greater than 50 μA when tested in

accordance with Annex D.
2 © ISO 2013 – All rights reserved
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ISO/DIS 16301.2
5 Materials and construction
5.1 Hoses

Hoses shall consist of a hydraulic fluid resistant rubber or plastic lining, one or multiple layers of steel wire or

textile and an oil, abrasion and weather resistant rubber or plastic cover. A layer of other materials on the

rubber cover are allowed for improved abrasion or other resistance. Grade 2 hoses shall not be perforated on

the cover.
5.2 Hose assemblies

Hose assemblies shall only be manufactured with those hose fittings whose functionality conforms to the

requirements of 7.2.1, 7.2.4 or 7.2.5 depending on type and 7.2.6 of this International Standard.

NOTE The manufacturer's instructions should be followed for proper preparation and fabrication of hose assemblies.

6 Dimensions and tolerances
6.1 Diameters

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

Table 2.
Table 2 — Diameters of hoses
Nominal Inside diameter Maximum outside diameter of hose
size
mm mm
All classes Class
70 100 140
Min. Max. All types All types All types
5 4,6 5,4 17 18 15
6,3 6,1 7,0 20 21 22
10 9,3 10,1 24 28 23
12,5 12,3 13,5 28 32 27
19 18,6 19,8 35 35 35
25 25,0 26,4 43 38 40
6.2 Cover thickness

When measured in accordance with ISO 4671, the outer cover thickness of the hoses shall be between

0,5 mm and 1,5 mm.
6.3 Concentricity

When measured in accordance with ISO 4671, the concentricity of the hoses shall conform to the values given

in Table 3.
© ISO 2013 – All rights reserved 3
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ISO/DIS 16301.2
Table 3 — Concentricity of hoses
Nominal size Maximum variation in wall thickness
Between inside diameter and Between inside diameter and
outside diameter reinforcement diameter
mm mm
5 and 6,3 0,8 0,5
over 6,3 and including 19 1,2 0,7
over 19 1,3 0,9
7 Physical properties
7.1 Fluid resistance
7.1.1 Test pieces

For rubber hoses, the fluid resistance tests shall be carried out on moulded sheets of lining and cover

compound having
...