ISO 28017:2009

INTERNATIONAL ISO
STANDARD 28017
First edition
2009-07-15

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 28017:2009(E)
©
ISO 2009

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ISO 28017:2009(E)
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ii © ISO 2009 – All rights reserved

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ISO 28017:2009(E)
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 Dimension and tolerances . 4
7 Physical properties. 5
8 Test certificate. 8
9 Marking . 9
10 Recommendations for packaging and storage . 9
Annex A (normative) Type tests and routine tests . 10
Annex B (normative) Measurement of adhesion between end fitting and lining . 11

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ISO 28017:2009(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.
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 28017 was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee
SC 1, Hoses (rubber and plastics).

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INTERNATIONAL STANDARD ISO 28017:2009(E)

Rubber hoses and hose assemblies, wire or textile reinforced,
for dredging applications — Specification
1 Scope
This International Standard 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, freshwater, 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 International Standard 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 International Standard 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 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 1431-1, Rubber, vulcanized or thermoplastic — Resistance to ozone cracking — Part 1: Static and
dynamic strain testing
1)
ISO 1746, Rubber or plastics hoses and tubing — Bending tests
ISO 4649:2002, Rubber, vulcanized or thermoplastic — Determination of abrasion resistance using a rotating
cylindrical drum device
ISO 4671, Rubber and plastics hoses and hose assemblies — Methods of measurement of the dimensions of
hoses and the lengths of hose assemblies
ISO 7233:2006, 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 8331, Rubber and plastics hoses and hose assemblies — Guidelines for selection, storage, use and
maintenance

1) Under revision as ISO 10619-1.
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ISO 28017:2009(E)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 8330 apply.
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
Nominal size
Maximum working pressure, MWP
MPa (bar)
0,5 (5) 1,0 (10) 1,5 (15) 2,0 (20) 2,5 (25) 3,0 (30) 4,0 (40)
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
NOTE X = Applicable, N/A = Not applicable.

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ISO 28017:2009(E)
4.2 Grades
Type 2 hoses are classified into three grades, A, B and C, according to their construction, as shown in Table 2.
Type 1 hoses are not divided into grades.
Table 2 — Grades
Construction and purpose
Type Grade
Number of
Purpose
reinforcing 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
Type Grade
Maximum working pressure, MWP
MPa (bar)
0,5 (5) 1,0 (10) 1,5 (15) 2,0 (20) 2,5 (25) 3,0 (30) 4,0 (40)
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
NOTE 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 may be textile-reinforced, 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.
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ISO 28017:2009(E)
5.2 Flotation material
The flotation material 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 of mechanical tools for tightening nuts on the bolts.
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.
Table 4 — Diameters of hoses
Actual inside diameter
Nominal size mm
min. max.
100 90 110
150 140 160
200 190 210
250 240 260
300 290 310
350 340 360
400 390 410
450 440 460
500 490 510
550 540 560
600 590 610
650 640 660
700 690 710
750 740 760
800 790 810
850 840 860
900 890 910
1 000 990 1 010
1 100 1 090 1 110
1 200 1 190 1 210
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ISO 28017:2009(E)
6.2 Hose unit length
The hose unit length shall be determined according to the conditions of use. Unless otherwise agreed
between the customer and the manufacturer, the tolerances on the unit 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 specifed in ISO 4649.
7.1.1.2 Abrasion resistance
When the test is carried out in accordance with ISO 4649:2002, method A, the relative volume loss ∆V shall
rel
3
not be greater than 200 mm .
7.1.2 Ozone resistance of cover
7.1.2.1 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 type 1 hoses, it is the compound from which the outer cover (that surrounding the flotation material) is
made which is tested.
7.1.2.2 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.
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 assemblie
...