Ключевые слова:
Welders, Approval testing, Welding, Fusion welding, Titanium, Titanium alloys, Zirconium, Zirconium-containing alloys, Capability approval, Testing conditions, Acceptance specification, Certification (approval), Examination (quality assurance), Semi-finished products, Wrought alloys, Metalworking, Castings, Dimensional tolerances, Test specimens, Test equipment, Butt joints, Dimensions, Shape, Designations, Health and safety requirements