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Aerospace series. Welded and brazed assemblies for aerospace construction. Joints of metallic materials by electron beam welding - Quality of welded assemblies Ingestion-build-48024 BS EN 1202 discusses chemicals1 Scope This European Standard defines the rules to be satisfied to ensure the quality of joints of metallic materials by electron beam welding (reference number 51 according to EN ISO 4063). It applies unreservedly to the manufacturing of new parts or for repair, these operations being under the responsibility of an approved manufacturer or supplier. The final responsibility is with the design authority