CONTENTSPage1. Units 22. Scope 33. Pield of application 34. References 35. Definitions 686. 6.1 The quality of welded joints General 86.2 Welding processes and materials 86.3 Bent or curved pieces 96.4 9tensioned bolts7: Welding documents - Approval 107.1 Welding plan 107.2 Approval of welding procedures 107.3 Approval ofweldersand operators 118. Machining of parts and welding procedure 128.1 Machining of parts 128.2 welding procedure 139. Inspection of welds 169.1 Organisation of inspection 169.2 Extent of inspection 189.3 Technical requirements for inspection 199.4 Defect acceptance criteria (see Tables 5 6 and 7) 2110. Repairs 2210.1 Repair of geometrical and appearance defects 2210.2 Repair of internal defects 23Registered byDecision of 13.2.84 to take effect on This standard replaces the registered standard of the saae number of July 198113.3.84 CONSTRUCTION METALLIQUEASSEMBLAGE SOUDESFABRICATION
11.Acceptance ofwelds 21Table 5 -Visual examination of welds -Criteria for 24defects acceptanceTable 6-Radiography-Criteria for the acceptance of 27.permitted defects when interpreting films 29rable7-ultrasohic testing -Defect acceptance criteria 30Appendix B-Information on the welding ranges for steels Appendix A-Cold bending conditionsAppendix C-welding plan -Perameters to be taken into 41account
1.'SYNBOLS-UNITS
Symbols
Units
-Dimensions ：in milimetres （mm) -Welding energy :joules per centimetre （J/cm) -Temperature ：degres Celsius （C).
2.SCOPE
The purpose of this standard is to specify the requirements which ejected to static or dynamic loads.
3.FIELD OP APPLICATION
This standard applies to the construction reinforcement and repairof steel structures or parts of steel structures included in buildings civil engineerng works public works fittings and equipment.
The general technical specification or contract letter shall specify supplement or amend these requirements when the structures are subjectedto special safety regulations orwhen the. loading conditions aresuch that specific risks must be taken into account.
4.REPERENCES
NF A04-304 Image quality indicator -Readiography of steel or castiron parts of thickness not exceeding 18o mm.NFA09-010 Non-destructive testing-Certification of agentsGeneral regulations.NF A 09-120 Non-destructive tests -Recoumended practices for testingby penetrating dye test.NF A 09-125 Non-destructive testing ofmetallurgical productsGeneral principles of magnetic testing.
NPP22-471NF A 35-501 General purpose structural steels -Grades and qualities - Thin medium and heavy gauge sheets，broad flats stan-dard rolled sections and girders.NF A 35-502 Structural steels having improved resistance to atmos-pheric corrosion - Thin medium and heavy gauge sheets broad flats standard rolled sections and girders.A 35-512 Steel industry products -Remendations concerningthe use and application of automatically shot blastedand painted products.A36-000 Remendations on the weldability of structural steelsand steels for boilers and pressure vessels.NFA36-101 General purpose hot rolled structural steel strip.NFA36-201 Steel industryproducts -High yield strength steelsheets for welded structures - Grades and qualities.NF A 49-501 Steel tubes -Hot finished hollow sections for construc-tion work -Dimensions'-technical requirerents fordelivery.NF A 49-541 Steel tubes - Cold finishedhollow sections for construc-tion work -Dimensions-Technical requirements fordelivery.NF A 81-301 metal electrodes for the manual electric arc：welding Covered of steels and alloys r Dimensional character-istics Geometrical and physical tests‘-Packagingand marking.NF A81-302 Covered metal electrodes for the manual electric arcwelding of plain or low-alloy steels -Mechanical geo-metrical and physical tests.NF A 81-309 metal electrodes for the manual electric arcwelding of plain or lov-alloy steels -Filler materials. CoveredBare solid or cored metal electrode wire for arc weldingNF A 81-310 with or without gas shielding - Wire diameter.electrode wire for gas shielded arcNF A 81-311 Solid bare metal viththe deposition of aplain or low-alloywelding
filler metal -Symbols -Filler metals.A 81-312 Solid bare metal electrode wire for.as shielded elec-tric arc welding with the deposition of walloyed or low=alloy metal -Chemical analysis -Mechanical geometricaland physical tests.NF A 81-316 Solid bare metal electrodewire for electrical sub-merged arc welding with the depositon of unalloyed orlow-alloy steel-Symbols - Specifications.NF A81-319 Powder flux for electric arc welding - Symbols.NF A81-322 Pairs of solid bare metal electrode wire/powder fluxfor electric arc welding with the deposition of aplainCovered metal electrodes for manual electric arc weldingNFA81-340 with the deposition of a metal with a high yield strength-Symbols -Filler materials.NF A 81-341 Covered metal electrodes for manual electric arc welding-Mechanical tests -Chemical analysis - Geometricaland physical tests.NF A 88110 Welding-Approval of welders and operators.Classification of defects in fusion welded joints withNF A 89-230explanatory notes.NF E 04-021 The welding and brazing of metals -List of proceduresfor symbolic representation on drawings.NF P 22-470 Metal construction -Welded joints subjected to a staticload - Structural requirements.and the inspection ofwelds.NF P22-472 Metal constructior -Welded joints -Approval of a weld-ing procedure.NF P 22-800 Preparation of pieces in workshops.XV374/75 Remended joint preparations for fusion welding (pre-pared by tho International Welding Institute).
