Home NR480 Approval of the Manufacturing Process of Metallic Materials This Rule Note provides the procedure to be followed to obtain the Society’s approval certificate of material for manufacturing process of metallic products. ReferenceTitleDateNR480 R08Approval of the manufacturing process of metallic materialsJuly 2024Check related documents:NR216 Rules on materials and welding for the classification of marine unitsCheck other Bureau Veritas rules and guidelines.