DVS 2902-1-1977 Resistance spot welding of steels of an individual thickness of up to 3 mm; methods and fundamentals
DVS 2902-2-1977 Resistance spot welding of steels of an individual thickness of up to 3 mm; spot welding characteristics of unalloyed and low-alloy steels (alloy content <= 5%)
DVS 2902-3-1977 Resistance spot welding of steels of an individual thickness of up to 3 mm; design and calculation
DVS 2902-4-1978 Resistance spot welding of steels of an individual thickness of up to 3 mm; preparation and execution
DVS 2904-1974 "Controls for spot, projection and seam welding equipment"
DVS 2906-1975 Resistance roller seam welding of overlapping parts
DVS 2907-1975 "Recommendations for the selection and comparison of spot welding machines, projection and seam welding machines (single-phase alternating current)"
DVS 2918-1979 history
1979DVS 2918-1979 Resistance stud welding machines; system connection and conversion of energy