TWI Frequently asked questions
AWS A5.12M/A5.12: 2009
Specification for tungsten and oxide dispersed tungsten electrodes for arc welding and cutting
ISO 6848:2004 modified
The requirements for the classification of bare tungsten and oxide dispersed tungsten electrodes for gas tungsten arc welding and cutting and plasma arc welding and cutting are specified. Classification is based upon the chemical composition of the electrode. Standard sizes, finish, lengths, quantities, product identification, color coding, and chemical composition limits are detailed.
AWS A10.1M: 2007
Specification for calibration and performance testing of secondary current sensing coils and weld current monitors used in single phase AC resistance welding
Methods for testing and describing the performance of Rogowski-type air core current sensing coils (CSC) and weld current monitors (WCM) used in the measurement of single-phase ac resistance welding currents are specified. Relevant terms are defined. CSC and system tests and calibration methods are detailed and user information is prescribed.
AWS C2.21M/C2.21: 2015
Specification for thermal spraying equipment performance verification
The requirements for acceptance inspection of plasma; flame powder, wire, rod and cord; wire arc; high velocity oxygen fuel type machines are specified.
AWS C4.3/C4.3M 2007
Recommended practices for safe oxyfuel gas heating torch operation
The latest procedures and safety requirements for oxyfuel gas heating torch operation are presented.
AWS D8.6: 2005
Specification for automotive resistance spot welding electrodes
Cancelled
BS 638
Arc welding power sources, equipment and accessories
Part 1: 1979 Specification for oil cooled power sources for manual, semi-automatic and automatic metal arc welding and for TIG welding
Superseded by BS 638-10
Part 2: 1979 Specification for manual metal arc welding with covered electrodes and for TIG welding
Superseded by BS 638-10<
Part 3: 1979 Specification for air cooled power sources for semi-automatic and automatic metal arc welding
Superseded by BS 638-10
Part 4: 1996 Specification for welding cables
Superseded by BS EN 50525-1: 2011, BS EN 50525-2-81: 2011, but remains current
Part 5: 1988 Specification for accessories
Superseded by BS EN 60974-5: 2013, BS EN 60974-12: 2011 and BS EN 60974-13: 2011
Part 6: 1984 Specification for safety requirements for construction
Superseded by BS 638-10
Part 7: 1984 Specification for safety requirements for installation and use
Superseded by DD CLC/TS 62081
Part 8: 1984 Specification for electrode holders and hand held torches and guns for MIG, MAG, and TIG welding
Superseded by BS EN 50078 and BS EN 60974-11
Part 9: 1990 Specification for power sources for manual arc welding with limited duty
Superseded by BS EN 60974-6
Part 10: 1990 Specification for safety requirements for arc welding equipment: welding power sources
Superseded by BS EN 60974-1
BS 7570: 2000
Code of practice for validation of arc welding equipment
Superseded by BS EN 50504
BS 8451: 2004 (R2009, R2014)
Rubber hoses for gas welding, cutting and allied processes. High kink resistant heavy duty welding hose (type H). Specification
Requirements for two classes of flexible rubber hose for use up to a maximum working pressure of 20 bar over a temperature range of -25°C to +70°C are specified. Type H hoses are mainly used in long lengths in the construction and military sectors.
BS EN 559: 2003
Gas welding equipment. Rubber hoses for welding, cutting and applied processes
Superseded by BS EN ISO 3821
BS EN 560: 2005
Gas welding equipment. Hose connections for equipment for welding, cutting and allied processes
The dimensions and characteristics of the constituent parts of hose connections, e.g. pressure regulators according to EN ISO 2503 and blow pipes, are specified. The design of the part of the hose tail inserted into the hose is not covered; this is specified in EN 1256.
BS EN 561: 2002
Gas welding equipment. Quick-action coupling with shut-off valves for welding, cutting and allied processes
Specifications and type tests are defined for quick-action couplings and shut-off valves as used in equipment for gas welding, cutting and allied processes to connect the hoses between the regulator and the torch.
BS EN 562: 2003
Gas welding equipment. Pressure gauges used in welding, cutting and applied processes
Superseded by BS EN ISO 5171
BS EN 730
Gas welding equipment
Part 1: 2002 (R2007) Incorporating a flame (flashback) arrestor
General requirements and tests for fuel gas, oxygen or compressed air safety devices incorporating a flame (flashback) arrestor for use downstream of the manifold, cylinder and/or pipeline outlet regulators, and upstream of blowpipes are specified. Location of the devices in the gas system is not specified. The use of safety devices with flashback arrestors for use with premixed oxy/fuel or air/fuel gas supply systems (downstream of a gas mixer or generator, for example) is not covered.
Part 2: 2002 (R2007) Safety devices not incorporating a flame (flashback) arrestor
General requirements and tests for fuel gas, oxygen or compressed air safety devices not incorporating a flame (flashback) arrestor for use downstream of the manifold, cylinder and/or pipeline outlet regulators, and upstream of blowpipes are specified. Location of the devices in the gas system is not specified.
BS EN 1256: 2006
Gas welding equipment. Specification for hose assemblies for equipment for welding, cutting and allied processes
The standard specifies performance and test requirements of hose assemblies (hose tails and clamps) using rubber hose, if supplied in assembled condition for equipment for gas welding, cutting and allied processes. It does not apply to assemblies upstream of the regulators. The tests prescribed are for type test or quality control checks only, and cover gas tightness, and resistance to separation under pressure or axial load.
BS EN 13705: 2004
Welding of thermoplastics. Machines and equipment for hot gas welding (including extrusion welding)
Performance requirements for machines and equipment for the hot gas (including extrusion) welding of semi-finished products made from thermoplastics are specified. General requirements are given on marking, documentation and nozzles. Hot gas welding requirements cover the design, construction and performance of manual welding equipment and accessories. Extrusion welding requirements are given for the plastification and preheating systems, the welding head and shoe and for the pressing tools; automatic shut down is also dealt with.
BS EN 13918: 2003
Gas welding equipment. Integrated flowmeter regulators used on cylinders for welding, cutting and applied processes. Classification, specification and tests
Superseded by BS EN ISO 2503+A1
BS EN 15339
Thermal spraying. Safety requirements for thermal spraying equipment
Part 2: 2007 Gas control units
This standard specifies safety requirements of gas control units for thermal spraying.
BS EN 50078: 1994
Torches and guns for arc welding
Superseded by BS EN 60974-7; partially supersedes BS 638-8: 1994
BS EN 50199: 1996
Electromagnetic compatibility (EMC). Product standard for arc welding equipment
Superseded by BS EN 60974-10+A1
BS EN 50504:2008
Validation of arc welding equipment
Supersedes BS 7570: 2000; technically identical to BS 7570:2000
Validation methods for arc welding equipment constructed and used to the accuracy specified in EN 60974-1 or other equivalent standards are specified. The accuracy of this equipment is designated as standard grade. The standard is applicable to arc welding power sources, wire feeders, and welding instrumentation.
BS EN 50525
Electric cables. Low voltage energy cables of rated voltages up to and including 450/750 V (U0/U)
Part 1: 2011 General requirements
Partially supersedes BS 638-4: 1996
General requirements for rigid and flexible energy cables of rated voltages U0/U up to and including 450/750 V a.c., used in power installations and with domestic and industrial appliances and equipment are specified.
Part 2-81: 2011 Cables for general applications. Cables with crosslinked elastomeric covering for arc welding
Partially supersedes BS 638-4:1996
The standard applies to single core, cross-linked elastomer covered arc welding cables of rated voltage U0/U 100/100 V, intended for connections between the welding power source and the electrode holder and the work piece. Two types of cable are included, with respectively Class D and Class E conductors. These conductors are more flexible than Class 6 to EN 60228, with Class E having the greater flexibility. Maximum conductor operating temperature for each of the cables is 85°C.
BS EN 60974
Arc welding equipment
Identical to IEC 60974
Part 1: 2012 (+ 2013 draft) Welding power sources
Supersedes BS 638-10:1990
This standard can be applied to welding power sources for arc welding and allied processes, such as electric arc cutting and arc spraying. Safety requirements for construction and performance requirements of welding power sources are specified.
Part 2: 2013 Liquid cooling systems
Safety and construction requirements for liquid cooling systems intended to cool arc welding torches are specified. The cooling systems can be internal or external to power sources for arc welding and allied processes. The standard is not applicable to refrigerated cooling systems. Clauses cover environmental conditions, test conditions, protection against electric shock, mechanical requirements, cooling system and cooling power requirements, rating plate specifications, documentation and marking.
Part 3: 2014 Arc striking and stabilising devices
This standard specifies the safety requirements for arc striking and stabilising devices used in arc welding and allied processes, such as plasma cutting and arc spraying. The devices may be stand-alone units or housed within the welding power source enclosure. Electromagnetic compatibility (EMC) requirements are excluded. Requirements cover test conditions, protection against electric shock, thermal requirements, abnormal operation, thermal protection, input supply connection, output, control circuits, and mechanical, rating plate, instructions and markings requirements.
Part 4: 2016 Periodic inspection and testing
Test procedures are specified for in-service inspection and, after repair, to ensure electrical safety. These test procedures are also applicable for maintenance. The standard is applicable to power sources together with ancillary equipment for arc welding, cutting and allied processes built in conformity with BS EN 60974-1 (IEC 60974-1). It is not applicable to the testing of new power sources or engine-driven power sources.
Part 5: 2013 Wire feeders
Partially replaces BS 638-5: 1988
Safety and performance requirements for wire feed systems for industrial and professional equipment used for arc welding (manual or mechanically guided torches) are specified. Stand-alone units which may be connected to a separate power source, or where the power source and wire feed unit are housed in a single enclosure are covered.
Part 6: 2016 Limited duty equipment
Supersedes BS 638-9: 1990
Applicable to power sources with a thermal cut-out device for use in manual metal arc welding with limited duty. Safety requirements for construction and performance requirements, limited to 160 A maximum welding current are specified. The standard is not applicable to rotating or remotely controlled power sources or those incorporating frequency conversion.
Part 7: 2013 Torches
Supersedes BS EN 50078
This standard specifies safety and construction requirements for torches for arc welding (MIG/MAG, FCA, TIG, plasma, submerged arc) and allied processes. It is not applicable to electrode holders for manual metal arc welding or torches for air-arc cutting or gouging. Clauses cover environmental conditions, classification, test conditions, protection against electric shock, thermal rating, pressure of the cooling liquid system, resistance to hot objects, impact resistance, marking and instructions for use.
Part 8: 2009 Gas consoles for welding and plasma cutting systems
Safety and performance requirements for gas consoles for use with combustible gases or oxygen are specified. The consoles are designed to supply gas for arc welding, plasma cutting, gouging and allied processes in a non-explosive atmosphere, and can be external or internal to the power source enclosure. The latter are also regulated by this standard.
Part 9: 2010 Installation and use
Supersedes DD CLC/TS 62081: 2001
This standard applies to the installation and use of equipment for arc welding and allied processes designed in accordance with safety requirements of BS EN ISO 60974-1 (IEC 60974-1), BS EN ISO 60974-6 (IEC 60974-6) or equivalent. It is for guidance in the safe installation and use of equipment for arc welding and allied processes and the safe performance of welding and cutting operations.
Part 10: 2014 + A1: 2015 Electromagnetic compatibility (EMC) requirements
Supersedes BS EN 50199: 1996
Applicable to all equipment for arc welding and allied processes (power sources, wire feeders, liquid cooling systems, arc striking and stabilising devices, etc.). Equipment type tested in accordance with, and meeting the requirements of, this standard is considered to be in compliance for all applications.
Part 11: 2010 Electrode holders
Supersedes BS 638-8
This standard covers electrode holders for MMA welding with electrodes up to 10 mm diameter, excluding those for underwater welding. Requirements specified include designation of current rating, operation, insulation resistance and electric shock protection, thermal rating with resistance to heat or weld spatter, welding cable connection and impact resistance, marking and operating instruction requirements. It is applicable to environments up to 40°C and 90% humidity at 20°C.
Part 12: 2011 Coupling devices for welding cables
Partially supersedes BS 638-5: 1988
Requirements are presented for coupling devices for flexible welding cables which are designed to be connected and disconnected manually without the use of tools. Tests, and electrical, thermal and mechanical properties required are outlined.
Part 13: 2011 Welding clamps
Partially supersedes BS 638-5: 1988
Applicable to clamps for arc welding processes, designed to make an electrical connection to the workpiece without using tools (not to clamps for underwater welding and plasma cutting). Safety and performance requirements of welding clamps are specified.
BS EN 62135
Resistance welding equipment
Identical to IEC 62135
Part 1: 2015 Safety requirements for design, manufacture and installation
Supersedes BS 5924: 1989
Applicable to equipment for resistance welding and allied processes, including single and multiple welding stations which may be manually or automatically loaded and/or started. The standard covers stationary and portable equipment and specifies safety requirements for design, manufacture and installation. To comply with this standard, all safety risks involved in loading, feeding, operating and unloading the equipment, where applicable, are to be assessed and the requirements of related standards observed.
Part 2: 2015 Electromagnetic compatibility (EMC) requirements
Supersedes BS EN 50240: 2004
Applicable to equipment for resistance welding and allied processes which are connected to mains supplies with rated voltages up to 1 000 V a.c. r.m.s. The frequency range covered is from 0 Hz to 400 GHz. The standard specifies test methods to be used in conjunction with CISPR 11 to determine radio frequency (r.f.) emission, and relevant standards and test methods for harmonic current emission, voltage fluctuation and flicker. Safety requirements are not included.
BS EN 62822
Electric welding equipment. Assessment of restrictions related to human exposure to electromagnetic fields (0Hz to 300GHz)
Identical to IEC 62822
Part 1: 2016 (draft BS 13/30270144) Product family standard for the assessment of equipment for resistance welding, arc welding processes related to human exposure restrictions for electromagnetic fields (0Hz - 300 GHz)
The standard applies to equipment for resistance welding, arc welding and allied processes designed for occupational use by professionals and for use by laymen. This equipment includes welding power sources, wire feeders and ancillary equipment, e.g. torches, liquid cooling systems and arc striking and stabilising devices.
Part 2: 2016 Arc welding equipment
The standard applies to equipment for arc welding and allied processes designed for occupational use by professionals and for use by laymen. Procedures are specified for the assessment of human exposure to magnetic fields produced by arc welding. It covers non-thermal biological effects in the frequency range from 0 Hz to 10 MHz and defines standardized test scenarios.
Part 3: 2015 (draft 15/30323169) Basic standard for the evaluation of human exposure to electromagnetic fields from equipment for resistance welding and allied processes
This standard applies to equipment for resistance welding and allied processes (e.g. resistance hard and soft soldering, resistance heating) designed for occupational use by professionals and for use by laymen. Procedures are specified for the assessment of human exposure to magnetic fields produced by resistance welding equipment. It covers non-thermal biological effects in the frequency range from 0 Hz to 10 MHz and defines standardized test scenarios.
BS EN ISO 669: 2016
Resistance welding. Resistance welding equipment. Mechanical and electrical requirements
Supersedes BS 3065:2001
Terms, definitions, symbols and abbreviations; test conditions; rated no load voltage at the output; maximum short circuit current; thermal rating; cooling; static mechanical characteristics and ratings plates are detailed for resistance spot and seam, projection, upset and flash welding equipment. Not all requirements apply to every type of equipment. The equipment covered is: single phase with AC; single phase with inverter welding transformer; single phase and 3 phase with rectified welding current by rectification of the output of the welding transformer; 3 phase with a current rectification in the input of the welding transformer; and 3 phase with inverter welding transformer. Welding transformers separate from the equipment are not covered by the standard.
BS EN ISO 2503: 2009 + A1: 2015
Gas welding equipment. Pressure regulators and pressure regulators with flow-metering devices for gas cylinders used in welding, cutting and allied processes up to 300 bar (30 MPa)
Supersedes BS EN 585:1995; BS EN 13918:2003
Requirements for single or two-stage pressure regulators for connection to gas cylinders containing compressed gases up to 300 bar are specified. The gases covered are dissolved acetylene; liquefied petroleum gases (LPG); methylacetylene-propadiene-mixtures (MPS) and carbon dioxide (CO 2 ) used in welding, cutting and allied processes. The standard covers units of measurement; manufacturing requirements; types of connections; physical characteristics such as pressures and flow rates; marking; instructions for use and type test procedures.
BS EN ISO 3821: 2010 (+ 2016 draft)
Gas welding equipment. Rubber hoses for welding, cutting and allied processes
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], for operating temperatures -20°C to +60°C, are specified.
BS EN ISO 5171: 2010
Gas welding equipment. Pressure gauges used in welding, cutting and allied processes
Supersedes BS EN 562:2003
Requirements for Bourdon-tube pressure gauges normally used with compressed gas systems in welding, cutting and allied processes, at pressures up to 30 MPa (300 bar) are specified. The standard also covers use for dissolved acetylene and for liquefied gases under pressure.
BS EN ISO 5172: 2006 + A2: 2015
Gas welding equipment. Blowpipes for gas welding, heating and cutting. Specifications and tests
The standard specifies the characteristics of manual (not air aspirated) blowpipes for gas welding, cutting and heating of metals, and gives specifications and corresponding tests. It specifies hose connections, material, marking, safety and operational requirements, and test conditions for leaks, sustained backfire, overheating, stability in wind, valve endurance, and backflow.
BS EN ISO 5182: 2016
Resistance welding. Materials for electrodes and ancillary equipment
Supersedes BS 4577:1970
Implementation of EN ISO 5182 by amendment to BS ISO 5182:2008
The characteristics of materials for resistance welding electrodes and ancillary equipment which are used for carrying current and transmitting force to the work are specified.
BS EN ISO 5183
Resistance spot welding. Electrode adaptors, male taper 1:10
Part 1: 2001 (R2007) Conical fixing, taper 1:10
Supersedes BS EN 25183-1:1992
Dimensions, tolerances and materials are specified for resistance spot welding electrode adaptors where the fixing part for the electrode cap is a male taper and for which the electrode taper fits conform to standard ISO 1089.
Part 2: 2001 (R2010) Parallel shank fixing for end-thrust electrodes.
Supersedes BS EN 25183-2:1992
Dimensions, tolerances, designation, materials and marking are specified for resistance spot welding electrodes where the fixing part for the electrode cap has a male taper and a parallel shaft is used to fix the adaptor to the electrode holder.
BS EN ISO 5821: 2009
Resistance welding. Spot welding electrode caps
The dimensions and tolerances of resistance spot welding electrode caps, where a female taper (see ISO 1089) is used to fix the cap to an electrode adaptor (see ISO 5183-1 and ISO 5183-2), are specified.
BS EN ISO 5826: 2014
Resistance welding equipment. Transformers. General specifications applicable to all transformers
Supersedes BS 7125:1989; use in conjunction with BS ISO 10656: 2016
This standard specifies safety, construction and test requirements applicable to transformers for resistance welding equipment without a connected rectifier. Requirements are given for physical environment, operating and test conditions, protection against electric shock, thermal specification, rated no-load output voltage, rated short-circuit voltage, cooling liquid circuit, dynamic behaviour, rating plate and instructions.
BS EN ISO 6848: 2015
Arc welding and cutting. Nonconsumable tungsten electrodes. Classification
Nonconsumable tungsten electrodes for inert gas shielded arc welding, plasma welding and cutting, and thermal spraying are classified according to their chemical compositions.
BS EN ISO 7291: 2010 + A1: 2015
Gas welding equipment. Pressure regulators for manifold systems used in welding, cutting and allied processes up to 30 MPa (300 bar)
Supersedes BS EN 961:1996
This standard specifies requirements and test methods for pressure regulators in manifold systems normally used for compressed gases up to 300 bar (30 MPa) for welding, cutting and allied processes. Gases included are: dissolved acetylene, methylacetylene-propadiene-mixtures (MPS) and carbon dioxide (CO 2 ). It covers regulation of the pressure at the outlet of high-pressure lines from manifold gas cylinders.
BS EN ISO 8430
Resistance spot welding. Electrode holders
Part 1: 2016 Taper fixing 1:10
Supersedes BS EN 28430-1:1992
Dimensions, tolerances, designations, materials, delivery conditions and marking of resistance spot welding electrode holders (type A), without offset and with the facility for cable clamping, and where a male taper 1:10 is used to fix the holder directly to the welding cylinder in multiple spot welding equipment, are specified.
Part 2: 2016 Morse taper fixing
Supersedes BS EN 28430-2:1992
Dimensions, tolerances, designations, materials, delivery conditions and marking of resistance spot welding electrode holders (type B), without offset and with the facility for cable clamping, and where a male Morse taper is used to fix the holder directly to the welding cylinder in multiple spot welding equipment, are specified.
Part 3: 2016 Parallel shank fixing for end thrust
Supersedes BS EN 28430-3:1992
Dimensions, tolerances, designations, materials, delivery conditions and marking of resistance spot welding electrode holders (type C), without offset and with the facility for cable clamping, and where a clamp is used to fix the holder directly to the welding cylinder in multiple spot welding equipment, are specified.
BS EN ISO 9012: 2011
Gas welding equipment. Air-aspirated hand blowpipes. Specifications and tests
Requirements and test methods for air-aspirated hand blowpipes are specified. The 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.
BS EN ISO 9312: 2013
Resistance welding equipment. Insulated pins for use in electrode back-ups
Requirements for insulated pins used to pin parts in the secondary circuit of resistance welding equipment, or other live equipment, which need to be insulated from each other are specified.
BS EN ISO 9539: 2010 + A1: 2014
Gas welding equipment. Materials for equipment used in gas welding, cutting and allied processes
Supersedes BS EN 29539:1992
General, and some special, requirements on materials used for the construction of equipment used in gas welding, cutting and allied processes are specified.
BS EN ISO 11252: 2013
Lasers and laser-related equipment. Laser device. Minimum requirements for documentation
The minimum documentation, marking and labelling for all laser products classified in accordance with IEC 60825-1, including laser diodes and all laser devices defined in ISO 11145, are specified. The standard applies to laser systems being integrated in a laser product in accordance with IEC 60825-1 and to laser devices being integrated in a laser unit or processing machine in accordance with ISO 11553-1 and -2.
BS EN ISO 13918: 2008 (+ 2016 draft)
Welding. Studs and ceramic ferrules for arc stud welding
The most important dimensions of studs and ceramic ferrules for arc stud welding are specified for customary applications. Further types may be specified as required for special application.
BS EN ISO 14113: 2013
Gas welding equipment. Rubber and plastics hose and hose assemblies for use with industrial gases up to 450 bar (45 MPa)
The standard 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. It applies to hose assemblies used to connect industrial gas cylinders to manifolds or bundles prior to any pressure reduction stage.
BS EN ISO 14114: 2014 (+ 2016 draft)
Gas welding equipment. Acetylene manifold systems for welding, cutting and allied processes. General requirements
Acetylene cylinder manifold systems extending from the cylinder valve or the bundle outlet connections to the outlet connection of the main shut-off valve are covered. Requirements for design, materials and testing of cylinder manifold systems for the supply of acetylene for use in welding, cutting and allied processes are specified. The standard applies to acetylene cylinder manifold systems in which acetylene single cylinders or acetylene bundles are coupled for collective gas withdrawal; a test procedure for decomposition blocker is included.
BS EN ISO 14744
Welding. Acceptance inspection of electron beam welding machines
Part 1: 2008 Principles and acceptance conditions
Requirements for acceptance inspection of electron beam welding machines, preferably when first installed on the user's premises, are specified.
Part 2: 2001 (R2005) Measurement of accelerating voltage characteristics
This standard is intended for use when the characteristics of the accelerating voltage of electron beam welding machines complying with EN ISO 14744-1 is to be measured in connection with an acceptance inspection. It provides essential information on the procedure and apparatus to be used for making the measurements.
Part 3: 2001 (R2005) Measurement of beam current characteristics
This standard is intended for use when the beam current of electron beam welding machines complying with EN ISO 14744-1:2000 is to be measured in connection with an acceptance inspection. It provides essential information on the procedure and apparatus to be used for making the measurements.
Part 4: 2001 (R2005) Measurement of welding speed
This standard is intended for use when the welding speed for electron beam welding machines complying with EN ISO 14744-1 is to be measured in connection with an acceptance inspection. It provides essential information on the procedure and apparatus to be used for making the measurements.
Part 5: 2001 (R2005) Measurement of run-out accuracy
This standard is intended for use when the run-out accuracy of the moving parts of electron beam welding machines complying with EN ISO 14744-1 is to be measured in connection with an acceptance inspection. It provides information on the procedure and apparatus to be used for making the measurements. Given the great variety of electron beam welding machines, the scope of measurements required for acceptance inspection purposes should be specified separately for the machine concerned.
Part 6: 2001 (R2005) Measurement of stability of spot position
This standard is intended for use when the stability of spot stability of welding machines complying with EN ISO 14744-1 is to be measured in connection with an acceptance inspection. It provides essential information to the procedure and apparatus to be used for making the measurements.
BS EN ISO 15615: 2013
Gas welding equipment. Acetylene manifold systems for welding, cutting and allied processes. Safety requirements in high pressure devices
General specifications, requirements and tests for devices located on the high-pressure side of acetylene manifold systems as defined in ISO 14114 are established. The standard does not cover the high-pressure piping, flexible hoses and the regulator.
BS EN ISO 15616
Acceptance tests for CO 2 laser beam machines for high quality welding and cutting
Part 1: 2003 (R2009) General principles, acceptance conditions
Requirements are provided for acceptance testing of CO 2 laser beam machines prior to or during installation at the user's premises. The acceptance tests are used to document the ability of CO 2 laser beam machines to produce welded joints and cuts of consistent quality. The standard is intended to be used for preparation of the technical specification for CO 2 laser beam machines for high quality welding and cutting in two operating directions (2D), giving basic requirements. Additional tests and requirements may be specified in the technical specification for the CO 2 laser beam machine.
Part 2: 2003 (R2009) Measurement of static and dynamic accuracy
The standard is applicable to the measurement of: the precision of the manipulation system; positioning accuracy; repeatability of positioning; and trajectory exactness, for the acceptance testing of CO 2 laser beam machines for high quality welding and cutting in two operation directions (2D) in accordance with EN ISO 15616-1. The testing procedure and equipment are specified.
Part 3: 2003 (R2009) Calibration of instruments for measurement of gas flow and pressure
The standard is applicable to the measurement of the process oriented gas parameters for the acceptance tests for CO 2 laser beam machines for high quality welding and cutting in two operation directions (2D) in accordance with EN ISO 15616-1. Examination procedures for instruments used for control of process oriented gas parameters are specified.
BS EN ISO 17662: 2016
Welding. Calibration, verification and validation of equipment used for welding, including ancillary activities
Requirements are specified for the calibration, verification and validation of equipment used for: control of process variables during fabrication, or control of the properties of equipment used for welding or allied processes, where the resulting output cannot be readily or economically documented by subsequent monitoring, inspection and testing. This is relevant to process variables influencing fitness-for-purpose and in particular the safety of the fabricated product.
BS EN ISO 17916: 2016
Safety of thermal cutting machines
Safety requirements for machinery design, construction, production, transportation, installation, operation, maintenance and putting out of service are specified. The standard applies to machinery using thermal cutting or marking procedures, such as oxy-fuel and plasma arc, and machinery designs based on an open gantry, cantilever machine or a track incorporated into a cutting table.
BS EN ISO 22829: 2008 (R2010; + 2015 draft)
Resistance welding. Transformer rectifier for welding guns with integrated transformers. Transformer rectifier units operating at 1000 Hz frequency
This standard applies to transformer-rectifier units as used in electric resistance welding machines operating from a power supply with a frequency of 1 000 Hz, and of a rated value of the input voltage equal to or higher than 500 V. These transformer-rectifier units are primarily used in welding guns with an integrated transformer. For these transformer units, this standard supplements the requirements given in ISO 5826 and ISO 10656, which remain applicable except where amended by this standard.
BS ISO 10225: 2013
Gas welding equipment. Marking for equipment used for gas welding, cutting and allied processes
The gas letter code, to be used for marking the equipment for gas welding, cutting and allied processes, when the full name of the gas cannot be used, is specified.
BS ISO 10656: 2016
Resistance welding equipment. Transformers. Integrated transformers for welding guns
Dimensions and characteristics; additional equipment (grounding provision, thermal protection, output current sensing coil); marking; designation; and test conditions are specified for single phase transformers. The standard is for use in conjunction with BS EN ISO 5826 whose requirements it amends.
BS ISO 12176
Plastics pipes and fittings. Equipment for fusion jointing polyethylene systems
Part 1: 2017 Butt fusion
The general characteristics of, and performance requirements for, equipment for butt fusion jointing of polyethylene (PE) piping systems using electrically powered heater plates are specified. The standard applies to mechanical and pressure-activated equipment for butt fusion jointing PE pipes and fittings intended for the supply of gaseous fuels, for the conveyance of water for human consumption (including raw water prior to treatment) or for the conveyance of water for general purposes. The normal ambient temperature range in which the butt fusion machine is intended to operate is -10°C to +40°C.
Part 2: 2008 (R2017)Electrofusion
This standard is applicable to electrofusion control units designed for use in the construction of joints between PE pipes and fittings for the supply of gaseous fuels or for the conveyance of water, where the normal operating temperature of the control unit is in the range -10°C to +40°C.
BS ISO 17683: 2014
Ships and marine technology. Ceramic weld backing for marine use
The classification, dimension and appearance, performance and test methods for ceramic weld backing are specified, along with marking, packaging, and storage. The standard applies to designing, manufacturing, testing, and accepting ceramic weld backing that is to be used in the double side form with single side weld, such as used in arc welding, gas welding, vertical gas welding, and submerged arc welding, and the shaping structural steel welding end for carbon steel, stainless steel, aluminium alloy, copper alloy, etc.
BS ISO 20168: 2016
Resistance welding. Locking tapers for electrode holders and electrode caps
Terms, definitions, dimensions, tolerances, designation, materials and marking of electrode holders and of spot welding electrode caps, where a locking taper is used, are specified.
DD CLC/TS 62081: 2002
Arc welding equipment installation and use
Superseded by BS EN 60974-9:2010
ISO 7289: 2010
Gas welding equipment. Quick-action couplings with shut off valves for welding, cutting and allied processes
PD 6633: 1998
Gas welding equipment. Industrial manual and machine oxygen-fuel gases blowpipes for flame heating and allied processes
Superseded by PD CEN/TR 13259
PD CEN/TR 13259: 2013
Gas welding equipment. Industrial manual and machine blowpipes for flame heating, flame brazing and allied processes
Supersedes PD 6633: 1998
Manual blowpipes and stationary machine blowpipes with free burning flames for heat treatment of work pieces, as used with gaseous fuels in connection with oxygen, compressed air or aspirated air, are specified. These blowpipes are designed for special applications and are not covered by EN ISO 5172 or EN ISO 9012.
PD CEN/TR 15339
Thermal spraying. Safety requirements for thermal spraying equipment
Part 1: 2014 General requirements
Safety requirements of machines, machine accessories, and equipment for thermal spraying are specified. The document is intended for the designer, manufacturer, integrator, and user of thermal spray equipment.
Part 3: 2014 Torches for thermal spraying and their connection and supply units
Safety requirements of equipment for thermal spraying - spray torches, gas hoses, hose assemblies and their electrical and water junctions in junction and monitoring boxes and power sources - are specified.
Part 4: 2014 Gas and liquid fuel supply
Safety requirements of equipment for thermal spraying, namely gas supply including supply of liquid fuels, are specified. The PD covers safety requirements for storage and the high pressure piping system from storage to the gas control unit or pressure regulator equipment.
Part 5: 2014 Powder and wire feed units
Safety requirements of equipment for thermal spraying, namely powder and wire feed units, are specified.
Part 6: 2014 Spray booth, handling system, dust collection, exhaust system, filter
Safety requirements of machines and equipment for thermal spraying, namely spray booths, handling, dust collection, exhaust, and filter systems, are specified.
PD ISO/TR 28821: 2012
Gas welding equipment. Hose connections for equipment for welding, cutting and allied processes. Listing of connections which are either standardised or in common use
The hose connections for equipment for welding, cutting which are standardised within countries of ISO member bodies are listed. Only details of thread type and size applying to that connection are provided.
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