CEN/TC 121/SC 7 - Equipment for gas welding, cutting and allied processes

This document specifies requirements for rubber hoses (including twin hoses) for welding, cutting and allied processes.
This document specifies requirements for rubber hoses for normal duty of 2 MPa (20 bar) and light duty [limited to hoses for maximum working pressure of 1 MPa (10 bar) and with bore up to and including 6,3 mm].
This document applies to hoses operated at temperatures −20 °C to +60 °C and used in:
— gas welding and cutting;
— arc welding under the protection of an inert or active gas;
— processes allied to welding and cutting, in particular, heating, brazing, and metallization.
This document does not specify requirements for hose assemblies; these are detailed in ISO 8207.
This document applies neither to thermoplastics hoses nor to hoses used for high pressure [>0,15 MPa (>1,5 bar)] acetylene.

ISO 9013:2017 presents geometrical product specifications and quality tolerances for the classification of thermal cuts in materials suitable for oxyfuel flame cutting, plasma cutting and laser cutting. It is applicable to flame cuts from 3 mm to 300 mm, plasma cuts from 0,5 mm to 150 mm and laser cuts from 0,5 mm to 32 mm.
The geometrical product specifications are applicable if reference to this document is made in drawings or pertinent documents, e.g. delivery conditions. If this document were also to apply, by way of exception, to parts produced by other cutting processes, this would have to be agreed upon separately.
Flatness defects are not addressed as such in this document. The references are to the current standards for the materials used.

2013-05-28 LVO: Draft for // FV received in ISO/CS (see notification of 2013-05-28 in dataservice).
2012-03-21 EMA: Draft for // ENQ received in ISO/CS (see notification of 2012-03-21 in dataservice).

This Technical Report refers to manual blowpipes and stationary machine blowpipes with free burning flames for heat treatment of work pieces. These blowpipes are, due to their type of construction, designed for special applications and do not fall under the scope of EN ISO 5172 and EN 731ISO 9012.
This Technical Report contains technical regulations, specifications and tests.
Blowpipes are intended for gaseous fuels in connection with oxygen, compressed air or aspirated air.
Flow rates are not expressly limited and depend on the thermal process to be performed.

ISO 14113:2013 specifies requirements for rubber and plastics hose and hose assemblies for use with compressed, liquefied, and dissolved gases up to a maximum working pressure of 450 bar (45 MPa), within the ambient temperature range of −20 °C to +60 °C.
It applies to hose assemblies used to connect industrial gas cylinders to manifolds or bundles prior to any pressure reduction stage. It does not cover rubber or thermoplastic hoses for welding, cutting, and allied processes (see ISO 3821 and ISO 12170). It does not apply to refrigerated liquefied gases or to liquefied petroleum gases (LPG).

ISO 15615:2013 establishes the general specifications, requirements and tests for devices located on the high-pressure side of acetylene manifold systems as defined in ISO 14114. It does not cover the high-pressure piping, flexible hoses and the regulator.

DOR should have been 2012-07-27.
2012-01-12 EMA: Draft for // vote received in ISO/CS (see notification of 2012-01-10 in dataservice).
2010-11-02 EMA: // ENQ draft provided to ISO/CS according to notification received in dataservice on 2010-11-01

ISO 9012:2008 specifies requirements and test methods for air-aspirated hand blowpipes.
ISO 9012:2008 applies to blowpipes for brazing, soldering, heating, fusion and other allied thermal processes, which use a fuel gas and aspirated air (injector-type blowpipes), and are intended for manual use.
ISO 9012:2008 is applicable to: air-aspirated hand blowpipes which are fed with a fuel gas in the gaseous phase, at a controlled pressure by a regulator, through a gas supply hose; air-aspirated hand blowpipes which are fed with a liquefied fuel gas in the gaseous phase at the container pressure, through a gas supply hose; so-called liquid-phase blowpipes which are fed with a fuel gas in the liquid phase, and where thermal evaporation takes place within the blowpipe.

ISO 7291:2010 specifies requirements and test methods for pressure regulators in manifold systems used in welding, cutting, and allied processes for: a) compressed gases up to 30 MPa (300 bar); b) dissolved acetylene; c) liquefied petroleum gases (LPG); d) methylacetylene‑propadiene‑mixtures (MPS); e) carbon dioxide (CO2).
It is not applicable to pressure regulators fitted directly to the gas cylinders, as defined in ISO 2503.

ISO 9539:2010 specifies the general, and some of the special, requirements on materials used for the construction of equipment used in gas welding, cutting and allied processes.

ISO 2503:2009 specifies requirements for single or two-stage pressure regulators without flow-metering devices for connection to gas cylinders used for
compressed gases up to 300 bar (30 MPa),
dissolved acetylene,
liquefied petroleum gases (LPG),
methylacetylene‑propadiene mixtures (MPS), and
carbon dioxide (CO2),
for use in welding, cutting and allied processes. It does not cover pressure regulators having a nominal outlet pressure p2 > 20 bar.
ISO 2503:2009 also specifies requirements for single or two-stage pressure regulators with flow-metering devices for connection to gas cylinders used for
compressed gases or mixtures up to 300 bar (30 MPa), and
carbon dioxide (CO2),
for use in welding, cutting and allied processes. Typical processes using this equipment are: tungsten inert-gas arc welding (TIG), metal-arc inert-gas welding (MIG), metal-arc active-gas welding (MAG), plasma arc welding, tubular-cored-wiretubular-cored-wire welding and plasma cutting. Annex B gives examples of flow-control systems and their flow-measuring devices.

This Technical Report specifies a test method for measuring the noise emitted by manual blowpipes according to EN ISO 5172 used for welding, cutting and allied processes.
This test method is used only for comparative purposes between manual blowpipes when tested under nominal conditions under clause 5.

ISO 5172:2006 specifies specifications and tests for blowpipes for gas welding, heating and cutting of metals. It applies to manual blowpipes for welding and heating with a nominal thermal power up to 32 000 kcal/h, and manual and machine cutting blowpipes with a cutting range up to 300 mm.
ISO 5172:2006 does not apply to air-aspirated blowpipes which are covered in ISO 9012.

This European Standard specifies performance and test requirements of hose assemblies, if supplied in assembled condition for equipment for gas welding, cutting and allied processes using rubber hoses in compliance with EN 559.
This European Standard is not applicable to hose assemblies where the hoses are not in compliance with EN 559 (e.g. high pressure hoses).

This standard defines the specifications and the type tests for quick-action couplings with shut-off valves. It applies to quick-action couplings used between the regulator and the torch in equipment for gas welding, cutting and allied processes.
This standard applies to cases where these couplings are used with hoses according to EN 559 or threaded unions according to EN 560.

This European Standard specifies safety requirements for the construction of small kits for brazing, soldering and welding for non-professional use. This standard is applicable to appliances whose welding equipment is completely set up in the factory and which use a liquefied gas or gas mixture as combustible gas and compressed oxygen, air or air/oxygen mixture for combustion.

This European standard specifies the requirements and relevant methods of measurement and test two types of thermoplastic hoses with maximum design working pressure of 1 MPa and 2 MPa respectively, used for flexible gas supply lines in specific fields of application as follows: - small kits according to EN 1326; - air-aspirated blowpipes for welding and allied processes; - miniature welding such as jewellery work, dentistry work excluding acetylene applications; - arc welding with shielding gas.

This international Standard applies to stationary cross-carriage oxygen cutting machines for shape cutting and/or parallel trimming. It also applies to machines for cutting by other thermal processes.

This document specifies a laboratory measurement method of noise emitted by blowpipes used for welding, cutting and allied processes.

Specifies the maximum external leakage rates which are acceptable for equipment used for welding, cutting and allied processes. Applies to individual components which are used in the gas supply to a blowpipe from the connecting point of the hose (outlet of the cylinder valve or connecting point to a gas supply plant). Does not apply to gas supply plants.

ISO 3821:2008 specifies requirements for rubber hoses (including twin hoses) for welding, cutting and allied processes.
ISO 3821:2008 specifies requirements for rubber hoses for normal duty of 2 MPa (20 bar) and light duty [limited to hoses for maximum working pressure of 1 MPa (10 bar) and with bore up to and including 6,3 mm].
ISO 3821:2008 applies to hoses operated at temperatures -20 °C to +60 °C and used in: gas welding and cutting; arc welding under the protection of an inert or active gas; processes allied to welding and cutting, in particular, heating, brazing, and metallization.
ISO 3821:2008 applies neither to thermoplastics hoses nor to hoses used for high pressure [>0,15 MPa (>1,5 bar)] acetylene.

ISO 5171:2009 specifies requirements for Bourdon-tube pressure gauges normally used with compressed gas systems at pressures up to 30 MPa (300 bar) in welding, cutting and allied processes. It also covers use for dissolved acetylene and for liquefied gases under pressure. It does not cover gauges for acetylene in acetylene-manufacturing plants.

TC - Figure 4 corrected

This European Standard lays down the dimensions and specifies the characteristics of the constituent parts of hose connections for welding, cutting and allied processes, for example for pressure regulators according to EN ISO 2503 and blowpipes. This European Standard does not cover the design of the part of the hose tail inserted into the hose. This is specified in EN 1256.

ISO 14114:2014 applies to acetylene cylinder manifold systems extending from the cylinder valve or the bundle outlet connections to the outlet connection of the main shut-off valve. It specifies requirements for design, materials and testing of cylinder manifold systems for the supply of acetylene for use in welding, cutting and allied processes.
ISO 14114:2014 applies to acetylene cylinder manifold systems in which acetylene single cylinders or acetylene bundles are coupled for collective gas withdrawal.
ISO 14114:2014 also covers a test procedure for decomposition blocker.

This standard constitutes a compilation of technical terms and definitions specifically related to gas welding equipment.

This part of EN 730 specifies the general requirements and tests for safety devices for fuel gases and oxygen or compressed air incorporating a flame (flashback) arrestor used downstream of manifold, cylinder and (or) pipeline outlet regulators, and upstream of blowpipes for welding, cutting and allied processes. This Standard does not specify the location of these devices in the gas system. This Standard does not include requirements for safety devices which do not incorporate a flame arrestor which are covered by prEN 730-2.

This part of EN 730 specifies the general requirements and tests for safety devices for fuel gases and oxygen or compressed air which do not incorporate a flame (flashback) arrestor used downstream of manifold, cylinder and (or) pipeline outlet regulators, and upstream of blowpipes for welding, cutting and allied processes. This standard does not specify the location of these devices in the gas system. This standard does not include requirements for safety devices which incorporate a flame arrestor which are covered by prEN 730-1.

This standard applies to materials suitable for flame cutting, plasma cutting and laser cutting.

International Standard ISO 9013 applies to materials suitable for oxyfuel flame cutting, plasma cutting and laser cutting. It is applicable to flame cuts from 3 mm to 300 mm, plasma cuts from 1 mm to 150 mm and to laser cuts from 0,5 mm to 40 mm. This International Standard includes geometrical product specifications and quality tolerances.
The geometrical product specifications are applicable if reference to ISO 9013 is made in drawings or pertinant documents, e.g. delivery conditions.
If this International Standard is also to apply, by way of exception, to parts which are produced by different cutting processes (e.g. high-pressure water jet cutting), this has to be agreed upon separately.

This standard is applicable to acetylene cylinder manifold systems extending from the cylinder value or the bundle outlet connections to the connection of the flame arrestor. It specifies requirements for design, materials and testing of cylinder manifold systems for the supply of acetylene for use in welding, cutting and allied processes.

No scope available

ISO 14113:2007 specifies requirements for rubber and plastics hose and hose assemblies for use with compressed, liquefied and dissolved gases up to a maximum working pressure of 45 MPa (450 bar), within the ambient temperature range of - 20 °C to + 60 °C.
ISO 14113:2007 applies to hose assemblies used to connect industrial gas cylinders to manifolds or bundles prior to any pressure reduction stage.
ISO 14113:2007 does not cover rubber or thermoplastic hoses for welding, cutting and allied processes (see ISO 3821 and ISO 12170).
ISO 14113:2007 does not apply to refrigerated liquefied gases or to liquefied petroleum gases (LPG).

1 Scope
This standard lays down the general specifications, requirements and tests of devices located on the high-pressure side of acetylene manifold systems as defined in EN ISO 14114. The standard does not cover the high-pressure piping, flexible hoses and the regulator.
NOTE The terms "upstream" and "downstream" refer to the normal direction of gas flow in the device.

This European Standard specifies the requirements and test methods for air-aspirated hand blowpipes. This European Standard applies to blowpipes for brazing, soldering, heating, fusion and other allied thermal processes, which use a fuel gas and aspirated air (injector-type blowpipes), and are intended for manual use.

This European Standard specifies requirements for Bourdon-tube pressure gauges normally used with compressed gases at pressures up to 300 bar in welding, cutting and allied processes. It also covers use for dissolved acetylene and for liquefied gases under pressure.
It does not cover gauges for acetylene in acetylene manufacturing plants.

This European Standard specifies requirements for rubber hoses, including twin hoses and fluxed fuel gas hoses for welding, cutting and allied processes. The term "allied processes" means, in particular, heating, brazing and metallization.
This standard specifies requirements for rubber hoses for normal duty up to 2 MPa (20 bar) and light duty [limited to hoses for maximum operating pressure up to 1 MPa (10 bar) and with nominal bore less than or equal to 6,3 mm].
This standard pertains to hoses operated at temperatures - 20 °C to + 60 °C.
Thermoplastic hoses specified in EN 1327 are excluded from this standard.
Different colours and markings are specified for identification of the gas.
NOTE   If hoses for liquefied petrol gases are used without regulators the use of light duty rubber hoses is not allowed.
This standard applies to hoses used in:
¾ gas welding and cutting;
¾ arc welding under the protection of an inert or active gas;
¾ processes allied to welding and cutting;
and assembled according to EN 1256.
Hose connections for the manufacture of hose lines see EN 560.
This standard does not apply to hoses used for high pressure acetylene [more than 0,15 MPa (1,5 bar)].

This European Standard specifies the requirements and type test methods of integrated flowmeter regulators for welding, cutting and allied processes.
It is applicable to integrated flowmeter regulators which may be equipped with flow control and measuring devices of gas flows on gas cylinders normally used for compressed gases up to 300 bar1) (30 MPa) and carbon dioxide (CO2).

Migrated from Progress Sheet (TC Comment) (2000-07-10): !! Be carefull !! prEN 2503 will replace EN 585:1994 (letter SCHOE 960606)

This European Standard specifies requirements for rubber and plastics hoses in accordance with EN 1327 and hose assemblies for use with compressed or liquefied gases up to a maximum design pressure of 450 bar (45 MPa), within the ambiant temperature range -20°C to +60°C. Rubber hoses for welding, cutting and allied processes for use up to a maximum design pressure of 20 bar (2 MPa), or not exceeding 1,5 bar in the case of acetylene, are covered by EN 559.

This standard specifies the characteristics of manual blowpipes for gas welding, cutting and heating of metals and gives specifications and corresponding tests.

This standard is applicable to machine cutting blowpipes with cylindrical barrels where the nozzle centre is coaxial with the barrel, operating with oxygen and fuel gas, with a cutting range from 3 mm to 300 mm cutting thickness,and which are fitted to a gas cutting machine. This standard specifies the characteristics of machine cutting blowpipes and gives specifications and corresponding tests.

This European standard lays down the dimensions and specifies the characteristics of the constituent parts of hose connections for welding, cutting and allied processes, for example for pressure regulators according to prEN 585 and blowpipes.

This European standard specifies requirements for Bourdon-tube pressure gauges normally used with compressed gases at pressures up to 300 bar in welding, cutting and allied processes. It also covers use for dissolved acetylene and for liquefied gases under pressure. It does not cover gauges for acetylene manufacturing plants.

This European Standard specifies requirement for rubber hoses for welding, cutting and allied processes. The term "allied processes" means, in particular, heating, brazing and metallization. Requirements for rubber hoses for normal duty (limited to hoses for maximum working pressure up to 10 bar and with nominal bore less than or equal to 6,3 mm) are specified. Plastic hoses are excluded from this standard. Different colours and markings are specified for identification of the gas.

Migrated from Progress Sheet (TC Comment) (2000-07-10): Stage 41 = PQ

This European standard defines the specifications and the type tests for quick-action couplings with shut-off valve. It applies to quick-action couplings used between the regulator and the torch in equipment for gas welding, cutting and allied processes. This Standard applies to cases where these couplings are used with hoses according to prEN 559 or threaded unions according to prEN 560.