CEN - European Committee for Standardization

This document specifies the requirements relating to:
Steel X5CrNiCu17-4 (1.4542)
Air melted
Softened
Forging stock
a or D ≤ 300 mm
for aerospace applications.
W.nr: 1.4542.
ASD-STAN: FE-PM3801.

This document specifies tests for determining the strength and wear resistance of guards for power take-off (PTO) drive- shafts on tractors and machinery used in agriculture and forestry, and their acceptance criteria. It is intended to be used in combination with ISO 5673-1:2005.
It is applicable to the testing of PTO drive- shaft guards and their restraining means. It is not applicable to the testing of guards designed and constructed to be used as steps.
This document is not applicable to guards for power take-off drive shafts that are manufactured before the date of publication of this document.

This document specifies the requirements relating to:
Steel FE-PL2108 (36NiCrMo16)
1 250 MPa ≤ Rm ≤ 1 400 MPa
Bars
De ≤ 75 mm
for aerospace applications.

This document specifies the requirements and test methods for solid flat extruded sheets of impact-modified acrylonitrile-styrene copolymer materials:
—     acrylonitrile-butadiene-styrene (ABS),
—     acrylonitrile-(ethylene-propylene-diene)-styrene (AEPDS) (commonly known as AES), and
—     acrylonitrile-styrene-acrylate (ASA), without fillers or reinforcing materials.
This document also applies to ABS, AEPDS and ASA sheet in rolled form. It applies only to thicknesses from 0,25 mm to 20,0 mm.

This document specifies the safety requirements and their verification for the design and construction of robotic feed systems (RFS) (see Annex A), which distribute feed and perform at least one of the following functions without the need of human interaction:
—     storing of feed;
—     loading of mobile feed unit (MFU);
—     mixing;
—     travelling;
—     cleaning (residual feed);
—     pushing feed.
Additionally, it provides the type of information, to be provided by the manufacturer, on safe working practices (including information about residual risks).
This document is for feeding livestock (e.g. cows, sheep, pigs).
This document does not apply to:
—     systems designed to be used at a fixed location and that discharge feed at a remote location (e.g. chain conveyor feed systems, belt conveyor feed systems or liquid feed systems);
—     tractors;
—     systems designed for field application.
This document deals with all the significant hazards, hazardous situations and events relevant to RFS, see Annex B, when they are used as intended and under the conditions of misuse, which are reasonably foreseeable, by the manufacturer as listed in Clause 4, except for the hazards arising from:
—     internal combustion engines of RFS;
—     requirements for the connections to the main electric power supply;
—     RFS with interchangeable equipment;
—     emission of airborne noise.
NOTE 1        Hazards related to internal combustion engines of robotic feed systems (e.g. exhaust emissions in buildings) will be considered in separate standards
NOTE 2        The main electric power supply is subject to national regulations or codes
NOTE 3        Sudden loud noises may cause farm animals to become startled. It is advised to consider this with the design of the RFS.
Environmental aspects (except noise) have not been considered in this document.
This document is not applicable to feed systems manufactured before the date of its publication.

This document specifies the conditions for determination of the tensile properties of single filaments of ceramic fibre such as the tensile strength, Young modulus and fracture strain.
This document applies to continuous ceramic filaments taken from tows, yarns, braids and knittings, which have strain to fracture less than or equal to 5 %.
This document does not apply to carbon fibres that exhibit a nonlinear stress-strain curve. This document does not apply to checking the homogeneity of strength properties of fibres, or to assessing the effects of volume under stress. Methods of estimation of strength statistical parameters are indicated.

This document specifies requirements for qualification testing of welding procedure specifications (WPSs) for electron or laser beam welding.
This document applies to metallic materials, irrespective of the shape of the parts, their thicknesses, the manufacturing method (e.g. rolling, forging, casting, sintering) or their heat treatment. It covers both the production of new parts and repair work.

This document specifies a method for determining the leaching of active ingredients or other compounds from preservative treated wood by a semi-field method for Use Class 3 (outdoor above ground). The preservative treated wood can be tested with or without subsequently surface coating or other water-repellent treatment. The method is applicable to the testing of commercial or experimental preservatives or paint systems applied to timber by methods appropriate to commercial practice.

This document defines markers of harm in online gambling. It is a minimum set of markers to analyse. The individual indicators can be analysed over additional time spans as well as in excess of those re-quired, and other markers can be added to the analysis as well.
In the event that the collection or analysis of data for a limited set of markers is prohibited within a spe-cific jurisdiction (for example, where legislation prevents it), operators can still be compliant with the standard provided that only these markers are omitted, and only for players who fall under that specific jurisdiction.
This document does not provide guidelines regarding the interventions to be employed when addressing individuals with gambling issues, nor does it establish predefined thresholds for intervention.

This document specifies the requirements for two types of rubber hoses and rubber hose assemblies for loading and discharge of liquid hydrocarbon fuels with a maximum working pressure of 10 bar (1,0 MPa).
Both types of hose are designed for:
a)   use with hydrocarbon fuels, having an aromatic hydrocarbon content not exceeding 50 % by volume and containing oxygenated compounds up to 15 %;
b)   operation within the temperature range of −30 °C to +70 °C, undamaged by climatic conditions of −50 °C to 70 °C when stored in static conditions.
This document is not applicable to hoses and hose assemblies for LPG, aviation fuel systems, fuel station systems and marine applications.

This document specifies a method for the determination of nominal compressive strength of advanced monolithic technical ceramic materials at room temperature.

This document specifies the requirements relating to:
Aluminium alloy AL-P7010
Forging stock
for aerospace applications.

This document, when used together with ISO 4254-1:2013 and ISO 4254-1:2013/AMD1:2021, specifies the safety requirements and their verification for the design and construction of trailed and self-propelled harvesters for grapes, olives and coffee. It describes methods for the elimination or reduction of hazards arising from the intended use of these machines by one person (the operator) in the course of normal operation and service. In addition, it specifies the type of information on safe working practices to be provided by the manufacturer.
When provisions of this document are different from those which are stated in ISO 4254-1:2013 and ISO 4254-1:2013/AMD1:2021, the provisions of this document take precedence over the provisions of ISO 4254-1:2013 and ISO 4254-1:2013/AMD1:2021 for machines that have been designed and built according to the provisions of this document.
This document, taken together with ISO 4254-1:2013 and ISO 4254-1:2013/AMD1:2021, deals with all the significant hazards, hazardous situations and events relevant to trailed and self-propelled harvesters for grapes, olives and coffee, when they are used as intended and under the conditions of misuse that are reasonably foreseeable by the manufacturer. It is not applicable to hazards arising from the presence of persons other than the operator, hazards related to lack of visibility, except lighting, hazards related to vibrations and moving parts for power transmission, except for strength requirements for guards and barriers.
This document does not deal with environmental hazards, except noise.
In respect of steering of self-propelled machines, it is applicable only to the ergonomic aspects (for example, location of the steering wheel); no other aspects related to steering are covered.
NOTE            Specific requirements related to road traffic regulations are not taken into account in this document.
This document is not applicable to machines manufactured before the date of its publication.

This document defines terms, which are used in the production and application of screed material and floor screeds.

This document specifies how a welding procedure specification (WPS) for production welding of steel castings is qualified. Tests are intended to be carried out in accordance with this document, unless additional tests are specified by the purchaser or by agreement between the contracting parties.
This document defines the conditions for the execution of welding procedure qualification tests and the limits of validity of a qualified welding procedure for all practical welding operations within the range of essential variables.
This document applies to the arc welding of steel castings. The principles of this document can be applied to other fusion welding processes subject to agreement between the contracting parties.

This document specifies particular requirements for portable units which are part of a transportable liquid oxygen system and used to provide a controlled flow of oxygen for inhalation by the patient in the home-care environment.
Portable units are intended to be used without professional supervision, carried by patients while moving around and during their off-site activities and refilled from a base unit via a transfilling device through the portable unit’s filling port connector.
NOTE            Requirements that are common to both portable units and base units are specified in ISO 18777-1.

This document specifies requirements for almandite garnet abrasives, as supplied for blast-cleaning.
It specifies ranges of particle sizes and values for apparent density, Mohs hardness, moisture content, conductivity of aqueous extract and water-soluble chlorides.
The requirements specified in this document apply to abrasives supplied in the new condition only.
They do not apply to abrasives either during or after use.
Test methods for non-metallic blast-cleaning abrasives are given in the various parts of the ISO 11127 series.
NOTE            Although this document has been developed specifically to meet requirements for preparation of steelwork, the properties specified are generally appropriate for use when preparing other material surfaces, or components, using blast- cleaning techniques. These techniques are described in ISO 8504-2.[1]

1.1        This document is intended to be used to assign part classifications across the aviation industries that use AM to produce parts.
1.2        This document is applicable to all AM technologies defined in ISO/ASTM 52900 used in aviation.
1.3        This document is intended to be used to establish a metric for AM parts in downstream documents.
1.4        This document is not intended to establish criteria for any downstream processes, but rather to establish a metric that these processes can use.
1.5        The part classification metric could be utilized by the engineering, procurement, non-destructive inspection, testing, qualification, or certification processes used for AM aviation parts.
1.6        The classification scheme in this document establishes a consistent methodology to define and communicate the consequence of failure associated with AM aviation parts.
1.7        This document is not intended to supersede the requirements and definitions of the applicable regulations or policies, including but not limited to the ones listed in Annex A1.
1.8        Tables A.1.1-A.1.3 align the existing regulations and guidance with the four part classes established herein. However, this alignment should not be construed as an alignment of the existing regulations to each other.
1.9        The material or process, or both, in general does not affect the consequence of failure of a part, therefore the classification scheme defined in this document may be used outside AM.
1.10     The user of this document should not assume regulators’ endorsement of this document as accepted mean of compliance.
1.11     This document does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this document to establish appropriate safety, health, and environmental documents and determine the applicability of regulatory limitations prior to use.
1.12     This document was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

This document is applicable to vehicles operating on tram networks.
This document specifies all necessary design rules and associated assessment criteria as well as guidance concerning the design of information and the corresponding user interfaces of driver’s cabs of tram vehicles.
It considers the tasks the driver has to carry out and human factors. This document specifies how information is arranged and displayed.
All assessments based on the normative requirements of this document are applicable mainly to:
— symbols provided by Annex A;
— arrangement of screen areas conform with Figure 1 (generic organization of information);
— colours, fonts;
— audible information.
This document is applicable to the following aspects:
— legibility and intelligibility of displayed information: general rules concerning the layout of
information on the displays, including character size and spacing;
— definition of harmonized colours, symbols, etc.;
— definition of harmonized principles for the command interface (by physical or touchscreen buttons):
size, symbols, reaction time, way to give feedback to the driver, etc.;
— general arrangements (dialogue structures, sequences, layout philosophy, colour philosophy),
symbols, audible information, data entry arrangements.
NOTE If this document deals with how information can be given for operation and in degraded situations, it does not define operating rules and degraded situations.
This document does not request any safety requirement related with displayed information.
This document specifies minimum requirements and does not prevent innovative solutions.
Requirements describing the functions using the display are out of scope of this document.

This document specifies the requirements relating to:
Steel X5CrNiCu17-4 (1.4542)
Air melted
Solution treated and precipitation treated
Sheets and strips
a ≤ 6 mm
Rm ≥ 930 MPa
for aerospace applications.
W.nr: 1.4542.
ASD-STAN: FE-PM3801.

This document provides the specialized requirements for individuals to demonstrate competence in performing IT product security evaluations and reviews according to the ISO/IEC 15408 series and ISO/IEC 18045.
NOTE            It is possible that evaluators and testers belong to bodies operating under ISO/IEC 17025 and reviewers belong to bodies operating under ISO/IEC 17065.

This document specifies methods for the chemical analysis of impurities present in aluminium oxide powders used as a raw material for fine ceramics.
Aluminium oxide powders are decomposed by acid pressure decomposition, acid decomposition or alkali fusion. The calcium, chromium, copper, iron, magnesium, manganese, potassium, silicon, sodium, titanium, zinc and zirconium contents in the test solution are determined by an inductively coupled plasma-optical emission spectrometer (ICP-OES).

The purpose of this document is to:
-   remind the end-purpose of the development phase (see Clause 5);
-   precise the content and outcomes of a development plan (see Clause 6).
This document is a supporting document that supplements RG.Aero 000 41 regarding the specific aspects to be taken into account in the development plan.
The iteratively realized development plan is consistent with the documents identified in 6.2.2.
This document applies to each level of the product breakdown structure. In particular, it takes into account the customer/supplier relationships.

This document specifies grades and mechanical and physical properties of flat washers made of austenitic, ferritic and duplex steel
grades, designed to be used in bolted joints in combination with bolts, screws, studs and nuts with a specified property class in
accordance with ISO 3506-1 and ISO 3506-2. These types of washers may also be used with other fasteners such as screws forming
their own mating thread This part of ISO 3506 is applicable to the following flat captive and non captive washers made of corrosion resistant stainless steel: - plain washers (with or without knurls, ribs or chamfers); - square washers; - square hole washers; -
shaped plateS

This International Standard describes the general principles of acoustic emission testing (AT) of
materials, components, and structures made of fibre-reinforced polymers (FRP) with the aim of
— materials characterization,
— proof testing and manufacturing quality control,
— retesting and in-service testing, and
— health monitoring.
This International Standard has been designed to describe specific methodology to assess the integrity
of fibre-reinforced polymers (FRP), components, or structures or to identify critical zones of high
damage accumulation or damage growth under load (e.g. suitable instrumentation, typical sensor
arrangements, and location procedures).
It also describes available, generally applicable evaluation criteria for AT of FRP and outlines procedures
for establishing such evaluation criteria in case they are lacking.
This International Standard also presents formats for the presentation of acoustic emission test data
that allows the application of qualitative evaluation criteria, both online during testing and by post-test
analysis, and that simplify comparison of acoustic emission test results obtained from different test
sites and organizations.
NOTE The structural significance of the acoustic emission cannot in all cases definitely be assessed based on
AT evaluation criteria only but can require further testing and assessment (e.g. with other non-destructive test
methods or fracture mechanics calculations).

ISO 14627:2012 describes a test method that covers the determination of fracture resistance of silicon nitride bearing balls at room temperature by the indentation fracture (IF) method, as specified in ISO 26602.
ISO 14627:2012 is intended for use with monolithic silicon nitride ceramics for bearing balls. It does not include other ceramic materials.
ISO 14627:2012 is for material comparison and quality assurance.

This document specifies the minimum requirements for BSC with respect to design, construction, safety and hygiene and gives general test methods for their verification.
The requirements for the different classes are given in the respective parts of prEN 12469.

This document specifies the requirements for the ultrasonic testing of steel castings (with ferritic structure) for highly stressed components and the methods for determining internal discontinuities by the pulse-echo technique.
Highly-stressed means for example:
—   High material utilization (close to Rp0,2)
—   High static and cyclic load
—   For fail-safe assessment, requiring a fracture-mechanic assessment
An example for a highly-stressed cast component is a turbine housing, subjected to combined high static, cyclic and thermal load.
Purchasers determine if components are highly stressed based on the need for performance or safety.
For lower-stressed cast components for general purposes, EN 12680-1 applies.
This document is applicable to the ultrasonic testing of steel castings which have usually received a grain-refining heat treatment and which have wall thicknesses up to and including 600 mm.
For greater wall thicknesses, special agreements are applicable with respect to test procedure and recording levels.
This document does not apply to austenitic steels and joint welds.

This document deals with special requirements and performance criteria for the design of lining systems made of steel for free standing chimneys. It specifies the requirements for cylindrical steel liners as stated in EN 13084-1.
This document covers the design of the following three basic types of liners located in a load bearing structure:
a)   base supported liner;
b)   sectional liner;
c)   top hung liner.
Additionally, this document applies to single wall chimneys regarding their contact with flue gases.
For simplicity, these various designs will generally be referred to herein as "liners".
The mechanical requirement is not part of this document; for information, see EN 1993-3.
NOTE   Liners built from prefabricated metal chimneys in accordance with EN 1856-1:2009 and EN 1856-2:2009 are installed as base supported liners with additional supports and guides as defined in this document.

This document gives requirements and recommendations for installation, commissioning and routine testing of BSC.

This document specifies the specific requirements for class II BSC with respect to design, construction, safety and hygiene.
It sets the specific performance criteria for class II BSC for work with biological agents and specifies test procedures with respect to protection of the worker, the environment and product protection including cross-contamination.

This document specifies requirements for electroplated coatings of zinc with supplementary treatments using hexavalent chromium compounds on iron or steel. It includes information to be supplied by the purchaser to the electroplater, and the requirements for heat treatment before and after electroplating.
This document is not applicable to zinc coatings applied:
—     to sheet, strip or wire in the non-fabricated form;
—     to close-coiled springs;
—     for purposes other than protective and decorative.
This document does not specify requirements for the surface condition of the basis metal prior to electroplating with zinc. However, defects in the surface of the basis metal can adversely affect the appearance and performance of the coating.
The coating thickness that can be applied to threaded components can be limited by dimensional requirements, including class or fit.

This document specifies white, yellow and orange road markings, removable or non-removable, under the form of road marking assemblies or preformed road markings, to be used for temporary road markings in circulation areas. Other road marking products and colours intended for temporary road markings are not covered in this document.
This document also gives specifications for the evaluation of conformity of temporary road markings in circulation areas including type testing and factory production control.

This document specifies the requirements relating to:
Steel 31NiMoCr10-5-3
1 230 MPa ≤ Rm ≤ 1 420 MPa
Bars
De ≤ 40 mm
for aerospace applications.
ASD-STAN designation: FE-PL73.

1.1   Scope of prEN 1995-1-1
(1) prEN 1995-1-1 gives general design rules for timber structures.
(2) prEN 1995-1-1 also gives specific design rules for buildings and timber civil engineering works.
1.2   Assumptions
(1) The assumptions of EN 1990 apply to this document.
(2) prEN 1995-1-1 is intended to be used in conjunction with EN 1990, EN 1991 (all parts), EN 1998 (all parts) when timber structures are built in seismic regions.

This document specifies a taxonomy of information elements to assist AI stakeholders with identifying and addressing the needs for transparency of AI systems. The document describes the semantics of the information elements and their relevance to the various objectives of different stakeholders.
This document is applicable to any kind of organization and application involving an AI system.

This document specifies the requirements for the ultrasonic testing of spheroidal graphite cast iron castings and the techniques for determining internal discontinuities by the pulse-echo technique.
This document does not apply to ultrasonic testing of the nodularity of spheroidal graphite cast irons.
This document does not apply to phased array technique and to transmission technique.
NOTE   The transmission technique has insufficient sensitivity to detect the discontinuities found in spheroidal graphite cast iron castings and is used in exceptional cases only.

This document specifies the requirements relating to:
Steel 31NiMoCr10-5-3
1 230 MPa ≤ Rm ≤ 1 420 MPa
Bars
De ≤ 40 mm
for aerospace applications.
ASD-STAN designation: FE-PL73.

This document specifies the electrical requirements for the design and construction of the electrical installation in self-propelled industrial trucks that are within the scope of ISO 5053-1:2020, except rough-terrain variable-reach trucks as defined in ISO 5053-1:2020, 3.21 and 3.22, straddle carriers as defined in ISO 5053-1:2020, 3.18 and 3.19, and all those functions utilized for the automatic operation of driverless industrial trucks as defined in ISO 5053-1:2020, 3.32. It provides the electrical/electronic and safety-related parts of control system requirements for those self-propelled industrial trucks identified above.
NOTE 1   For detailed information about the electrical/electronic requirements for driverless trucks see EN ISO 3691-4:2023, 4.1.3.
NOTE 2   Reference is made to this document in other standards which cover the non-electrical requirements of the various industrial truck types.
This document deals with safety requirements for all electrical and electronic components of industrial trucks, including electrically actuated hydraulic/pneumatic valves. It specifies minimum performance levels required for safety functions realized by safety related parts of control systems. It is intended to be used to avoid or minimize hazards or hazardous situations listed in Annex I. These situations can arise during the operation in the area of use for which it is designed and during maintenance of trucks in accordance with the specifications and instruction given by the manufacturer.
This document does not deal with hazards which could occur:
-   during construction;
-   when operating in potentially explosive atmospheres;
-   because of malfunction of non-electric safety-related parts of control systems, e.g. hydraulic and pneumatic elements like pistons, non-electric valves, pumps, etc.;
-   when operating outside the range of 30 % to 95 % (not condensing) of relative humidity.
NOTE 3   The level of the defined required performance for electrical safety related control systems can be used as a guideline to determine the performance of non-electric systems.
NOTE 4   Hazards due to penetration of water and dust are covered by the definition of PLr of safety functions, according to EN ISO 13849-1:2023.
NOTE 5   Safety measures outside the scope of the electrical/electronic system are covered by other safety standards e.g. EN ISO 3691 series and EN 16307 series.

This document specifies the requirements and classification for assessing the explosive resistance of windows, doors, shutters as well as curtain walling elements, complete with their frames, infills and fixings, for use in both internal and external locations in buildings, when submitted to a shock tube test in accordance with EN 13124-1:2025. This document gives no information on the explosion resistance capacity of the wall or other surrounding structure.

This document specifies the methods for the chemical analysis of cement.
This document describes the reference methods and, in certain cases, an alternative method which can be considered to be equivalent. In the case of a dispute, only the reference methods are used.
An alternative performance-based method using X-ray fluorescence (XRF) is described for SiO2, Al2O3, Fe2O3, CaO, MgO, SO3, K2O, Na2O, TiO2, P2O5, Mn2O3, SrO, Cl and Br. This method is based on beads of fused sample and analytical validation using certified reference materials, together with performance criteria. A method based on pressed pellets of un-fused sample can be considered as equivalent, providing that the analytical performance satisfies the same criteria.
An alternative performance-based method using inductively coupled plasma optical emission spectroscopy (ICP-OES) is described for SO3.
When correctly calibrated according to the specified procedures and reference materials, XRF and ICP-OES provides methods equivalent to the reference methods but has not been validated for use yet as a reference procedure for conformity and dispute purposes. They can be applied to other relevant elements when adequate calibrations have been established.
Any other methods can be used provided they are calibrated, either against the reference methods or against internationally accepted reference materials, in order to demonstrate their equivalence.
This document describes methods which apply principally to cements, but which can also be applied to their constituent materials. They can also be applied to other materials, the standards for which call up these methods. Standard specifications state which methods are to be used.

ISO 5403-1:2011 specifies a method for determining the dynamic water resistance of leather by means of repeated linear compression. It is applicable to all flexible leathers but is particularly suitable for leathers intended for footwear applications.

This document specifies the requirements and classification for assessing the explosive resistance of windows, doors, shutters as well as curtain walling elements, complete with their frames, infills and fixings, for use in both internal and external locations in buildings, when submitted to an arena test in accordance with FprEN 13124-2:2025. This document gives no information on the explosion resistance capacity of the wall or other surrounding structure.

This document specifies the requirements for the ultrasonic testing of steel castings (with ferritic structure) for general purposes and the methods for determining internal discontinuities by the pulse-echo technique.
This document is applicable to the ultrasonic testing of steel castings which have usually received a grain refining heat treatment and which have wall thicknesses up to and including 600 mm.
For greater wall thicknesses, special agreements are applicable with respect to test procedure and recording levels.
This document does not apply to austenitic steels and joint welds. For highly stressed components EN 12680-2 is applicable.

This document specifies the requirements for uncoated high strength steel strands of zinc or zinc alloy coated high strength steel strands, encapsulated with wax and a sheath for construction applications.
The document applies only to products as supplied by the manufacturer.

This document specifies the characterization of ceramic slurry for use as feedstock in vat photopolymerization additive manufacturing (AM) processes. The characterization includes the composition and properties of the slurry, such as solids content, dynamic viscosity, particle size distribution, chemical composition, and solid dispersion stability. This document also provides available methods on sampling and preparing slurry samples for testing.
This document does not deal with safety aspects.

This document provides guidance information on chemical hazards that are taken into consideration when developing safety standards for child care articles. In addition, these guidelines can assist those with a general professional interest in child safety.

This document specifies how a preliminary welding procedure specification (pWPS) is qualified by welding procedure tests.
This document is applicable to production welding and repair welding.
This document is applicable to fusion welding of steels covered by groups 1, 2, 3 and 8 in accordance with ISO 15608 in a hyperbaric wet environment.
This document is applicable to the following welding processes, in accordance with ISO 4063:2023, applicable in hyperbaric wet environments:
—     111 manual metal arc welding (metal arc welding with covered electrode);
—     114 self-shielded tubular-cored arc welding.
The principles of this document can be applied to other steel groups and fusion welding processes not listed.
This document specifies three weld quality levels, A, B, and Z in order to permit application to a wide range of weldments. Each weld quality level defines a set of criteria for weldment properties that are established during qualification.
This document does not address the selection of the weld quality level to meet the requirements of a particular application.