ISO 6182-12:2010

INTERNATIONAL ISO
STANDARD 6182-12
First edition
2010-01-15
Fire protection — Automatic sprinkler
systems —
Part 12:
Requirements and test methods for
grooved-end components for steel pipe
systems
Protection contre l'incendie — Systèmes d'extinction automatiques du
type sprinkler —
Partie 12: Exigences et méthodes d'essai pour les raccords de
tuyauterie en acier à extrémités rainurées

Reference number
©
ISO 2010
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ii © ISO 2010 – All rights reserved

Contents Page
Foreword .iv
Introduction.v
1 Scope.1
2 Normative references.1
3 Terms and definitions .2
4 Product consistency .2
5 Product assembly.3
6 Requirements.3
6.1 Grooved-end dimensions .3
6.2 Minimum pipe wall thickness.3
6.3 Mechanical coupling housing .3
6.4 Pressure-responsive gasket.3
6.5 Bolts.3
6.6 Nuts.8
6.7 Hinge pins .8
6.8 Flexible coupling .8
6.9 Vacuum.8
6.10 Air leakage .8
6.11 Low-temperature exposure .8
6.12 Heat ageing .8
6.13 Hydrostatic pressure.8
6.14 Bending moment .8
6.15 Gasket material evaluation.8
6.16 Fire resistance .9
6.17 Rated working pressure.9
6.18 Nominal sizes.9
7 Test methods .9
7.1 Test assembly.9
7.2 Vacuum.9
7.3 Air leakage .10
7.4 Low-temperature exposure .10
7.5 Heat aging .11
7.6 Hydrostatic pressure test .11
7.7 Bending moment .11
7.8 Fire resistance .13
8 Markings.13
8.1 Housing markings .13
8.2 Gasket markings.14
8.3 Manufacturer's installation instructions .14
Bibliography.15

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 6182-12 was prepared by Technical Committee ISO/TC 21, Equipment for fire protection and fire fighting,
Subcommittee SC 5, Fixed firefighting systems using water.
ISO 6182 consists of the following parts, under the general title Fire protection — Automatic sprinkler systems:
⎯ Part 1: Requirements and test methods for sprinklers
⎯ Part 2: Requirements and test methods for wet alarm valves, retard chambers and water motor alarms
⎯ Part 3: Requirements and test methods for dry pipe valves
⎯ Part 4: Requirements and test methods for quick-opening devices
⎯ Part 5: Requirements and test methods for deluge valves
⎯ Part 6: Requirements and test methods for check valves
⎯ Part 7: Requirements and test methods for early suppression fast response (ESFR) sprinklers
⎯ Part 8: Requirements and test methods for pre-action dry alarm valves
⎯ Part 9: Requirements and test methods for water mist nozzles
⎯ Part 10: Requirements and test methods for domestic sprinklers
⎯ Part 11: Requirements and test methods for pipe hangers
⎯ Part 12: Requirements and test methods for grooved-end components for steel pipe systems
iv © ISO 2010 – All rights reserved

Introduction
This part of ISO 6182 is one of a number of International Standards prepared by ISO/TC 21 covering
components for automatic sprinkler systems.
They are included in a series of International Standards planned to cover the following:
a) carbon dioxide systems (ISO 6183);
b) explosion protection systems (ISO 6184).

INTERNATIONAL STANDARD ISO 6182-12:2010(E)

Fire protection — Automatic sprinkler systems —
Part 12:
Requirements and test methods for grooved-end components
for steel pipe systems
1 Scope
This part of ISO 6182 specifies performance requirements, grooving dimensions, test methods and marking
requirements for couplings used in the joining of roll and cut grooved steel tube, pipe, grooved-end fittings and
other grooved-end components up to 300 mm in nominal diameter.
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 37, Rubber, vulcanized or thermoplastic — Determination of tensile stress-strain properties
ISO 188, Rubber, vulcanized or thermoplastic — Accelerated ageing or heat resistance tests
ISO 898-1:1999, Mechanical properties of fasteners made of carbon steel and alloy steel — Part 1: Bolts,
screws and studs
ISO 898-2:1992, Mechanical properties of fasteners — Part 2: Nuts with specified proof load values — Coarse
thread
ISO 1083:2004, Spheroidal graphite cast irons — Classification
ISO 4200:1991, Plain end steel tubes, welded and seamless — General tables of dimensions and masses per
unit length
ASTM A47/A47M-99(2004), Standard Specification for Ferritic Malleable Iron Castings
ASTM A153/A153M, Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware
ASTM A183, Standard Specification for Carbon Steel Track Bolts and Nuts
ASTM A536-84(2004), Standard Specification for Ductile Iron Castings
ASTM A563-07a, Standard Specification for Carbons and Alloy Steel Nuts
ASTM B633-07, Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel
ASTM D395-03, Standard Test Methods for Rubber Property — Compression Set
EN 12329, Corrosion protection of metals — Electrodeposited coatings of zinc with supplementary treatment
on iron or steel
VdS 2100-6:2002-5(01), Guidelines for water extinguishing systems — Pipe joints — Requirements and test
methods
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
grooved-end components
pipe, tubes, fittings and other components that are used to form grooved mechanical coupling joints
3.2
mechanical coupling
device consisting of two or more housings, fasteners such as bolts and nuts and a pressure-responsive
gasket, used to mechanically join grooved pipe, tubing, valves, fittings and other grooved-end components to
form a sealed joint
3.2.1
flexible mechanical coupling
mechanical coupling forming a sealed joint in which there is limited angular, axial and rotational movement
without overstressing the pipe joint
NOTE See 6.8.
3.2.2
rigid mechanical coupling
mechanical coupling forming a sealed joint in which there is essentially no free angular, axial or rotational
movement
3.3
mechanical coupling housing
structural parts of a mechanical coupling that mechanically fit onto grooved pipes, tubes, fittings and other
grooved-end components to provide restraint and enclosure of the gasket
3.4
OD
outside diameter
3.5
pressure-responsive gasket
gasket that improves its seal with the application of pressure; that is, additional pressure results in additional
force between the gasket and the surface to which it is sealing
3.6
rated working pressure
maximum service pressure at which a grooved piping system is intended to operate
4 Product consistency
It shall be the responsibility of the manufacturer to implement a quality-control programme to ensure that
production consistency meets the requirements of this part of ISO 6182 in the same manner as the originally
tested samples.
2 © ISO 2010 – All rights reserved

5 Product assembly
Installation instructions shall be provided by the manufacturer and shall include at least the following:
a) assembly procedure for the installation of couplings;
b) grooved-end component specifications, with which the coupling is intended to be used, including
minimum pipe wall thickness;
c) bolt torque specification, where required by the manufacturer;
d) maximum allowable movement for flexible couplings;
e) specification for permissible media within the pipe in conjunction with the gasket material (see 8.2 for
colour codes).
6 Requirements
6.1 Grooved-end dimensions
6.1.1 Roll grooved-end dimensions
The dimensions of roll grooved ends shall be in accordance with Table 1.
6.1.2 Cut grooved-end dimensions
The dimensions of cut grooved ends shall be in accordance with Table 2.
6.1.3 Cast grooved-end dimensions
The dimensions of cast grooved ends shall be in accordance with Table 3.
6.2 Minimum pipe wall thickness
Grooved-end pipe couplings shall be tested with pipe having the minimum nominal wall thickness specified in
the manufacturer's installation instructions.
6.3 Mechanical coupling housing
The casting materials of the housings shall be ductile iron in accordance with ISO 1083:2004, Grade 400-15;
ASTM A536-84(2004), Grade 65-45-12 or malleable iron in accordance with ASTM A47/A47M-99(2004),
Grade 32510 or 32518; or material having equivalent strength and corrosion resistance. When requested on
purchase order, the housing shall be galvanized in accordance with ASTM A153/A153M or EN 12329.
6.4 Pressure-responsive gasket
Materials for the coupling gaskets shall be ethylene-propylene diene m-class rubber (EPDM), nitrile, silicone
rubber or other elastomeric materials suitable for the intended service.
6.5 Bolts
Oval neck track head bolts shall be in accordance with ISO 898-1:1999, Class 8.8, heavy hex bolts in
accordance with ASTM A183 or other bolts which prevent rotation and have a minimum tensile strength of
800 N/mm . Bolts shall be zinc plated in accordance with ASTM B633-07, SC1, or EN 12329, or be of a
material that provides at least equivalent corrosion resistance.
Table 1 — Roll grooved-end dimensional specifications
Dimensions in millimetres
a
Dimensional specifications
Pipe or tube
Gasket Groove Groove diameter Groove Wall Flare
seat width depth thickness
Outside diameter (OD) C
b
Nominal
A B D T F
Actual Actual
size
Tolerance Tolerance
±0,76 ±0,76 Min. allow. Max. dia.
size size
+0,41 0
25 33,7 15,88 7,14 30,23 1,70 1,8 34,5
−0,68 −0,38
+0,50
32 42,4 15,88 7,14 38,99 1,70 1,8 43,3
−0,60
−0,38
+0,44
40 48,3 15,88 7,14 45,09 1,60 1,8 49,4
−0,52
−0,38
50 60,3 ±0,61 15,88 8,74 57,15 1,60 1,8 62,2
−0,38
65 73,0 15,88 8,74 69,09 1,98 2,3 75,2
±0,74
−0,46
65 76,1 ±0,76 15,88 8,74 72,26 1,93 2,3 77,7
−0,46
+0,89 0
80 88,9 15,88 8,74 84,94 1,98 2,3
...