1973DVS 1501-1973 "Recommendations for the welding of the nickel steels 10 Ni 14, 12 Ni 19 and X 8 Ni 9 having a high impact strength at low temperature"
DVS 1501-1973 "Recommendations for the welding of the nickel steels 10 Ni 14, 12 Ni 19 and X 8 Ni 9 having a high impact strength at low temperature" was changed to DVS 0955-1999 .