CUTTING & WELDING
- EN 1256:2006
Gas welding equipment. Specification for hose assemblies for equipment for welding, cutting and allied processes.
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)
(source: EN1256:2006. [online]. [cit. 2014-11-03]. Available at: http://store.uni.com/magento-220.127.116.11/index.php/en-1256-2006.html?josso_back_to=http://store.uni.com/josso-security-check.php&josso_cmd=login_optional&josso_partnerapp_host=store.uni.com)
- EN ISO 2503:2009
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),
•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.
(source: ISO 2503:2009 - Gas welding equipment. [online]. [cit. 2014-11-03]. Available at: http://www.iso.org/iso/home/store/catalogue_tc/catalogue_detail.htm?csnumber=40644)
- EN ISO 5171:2009
Gas welding equipment -- Pressure gauges used in welding, cutting and allied processes.
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
- ISO 3821:2008
Gas welding equipment -- Rubber hoses for welding, cutting and allied processes
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.
The Pressure Equipment Directive.
"The PED Directive 97/23/EC (consolidated text) arises from the European Community's Programme for the elimination of technical barriers to trade and is formulated under the "New Approach to Technical Harmonisation and Standards". Its purpose is to harmonize national laws of Member States regarding the design, manufacture, testing and conformity assessment of pressure equipment and assemblies of pressure equipment. It therefore aims to ensure the free placing on the market and putting into service of the equipment within the European Union and the European Economic Area. Formulated under the New Approach the directive provides for a flexible regulatory environment that does not impose any detailed technical solution. This approach allows European industry to develop new techniques thereby increasing international competitiveness. The pressure equipment directive is one of a series of technical harmonization directives for machinery, electrical equipment, medical devices, simple pressure vessels, gas appliances etc."
- DIN EN 730-1:2002
Gas welding equipment. Safety devices Incorporating a flame (flashback) arrestor.
The document 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 EN 730-2.
- ISO 10297:2006
Transportable gas cylinders -- Cylinder valves -- Specification and type testing.
ISO 10297:2006 specifies valve design, production and marking requirements, and type test methods for valves intended to be fitted to gas cylinders which convey compressed, liquefied or dissolved gases. ISO 10297:2006 does not apply to valves for cryogenic equipment, for fire extinguishers or for liquefied petroleum gas (LPG).
Additional specific requirements for valves fitted with pressure-reducing devices (see ISO 22435 and EN 738-3), residual pressure-retaining devices and non-return devices (see ISO 15996), and bursting discs and pressure-relief devices (see ISO 4126 and prEN 14513) are not covered by ISO 10297:2006.
NOTE: Requirements for valves for liquefied petroleum gas (LPG) are specified in ISO 14245 and EN 13152, and in ISO 15995 and EN 13153. Requirements for valves for cryogenic vessels are specified in ISO 21011. Further specific requirements for valves for breathing apparatus are specified in EN 144-1, EN 144-2 and EN 144-3."
- ISO 14114:1999
Gas welding equipment -- Acetylene manifold systems for welding, cutting and allied processes -- General requirements.
This standard is applicable to acetylene cylinder manifold systems extending from the cylinder valve 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.
This standard applies to acetylene cylinder manifold systems in which up to 16 acetylene single cylinders or two acetylene bundles are coupled for collective gas withdrawal."
- ISO 15615:2013
Gas welding equipment -- Acetylene manifold systems for welding, cutting and allied processes -- Safety requirements in high-pressure devices.
"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."
- ISO 5175:1987
Equipment used in gas welding, cutting and allied processes -- Safety devices for fuel gases and oxygen or compressed air -- General specifications, requirements and tests
"Refers to safety devices used downstream of cylinder or pipeline outlet regulators and of pipeline outlet valves, and upstream of blowpipes. Does not specify location and combination of these devices in the gas system. Cancels and replaces the first edition of ISO 5175-1 published in 1983."
- ISO 7291:2010
Gas welding equipment -- Pressure regulators for manifold systems used in welding, cutting and allied processes up to 300 bar.
" 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 9090:1989
Gas tightness of equipment for gas welding 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 9539:2010
Gas welding equipment -- Materials for equipment used in gas welding, cutting and allied processes
"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."