1971 - Supratherme-Ni: Approved and used by NPCIL for minus 46˚C (-50˚F) for thermal cooling shields

1972 - Batox-B: Basic coated stainless steel electrode (AWS E308L) used in nuclear fabrication (dump tank)

1973 - D&H 150: For welding HV9A stainless steel for phosphoric acid service

1974 - Cromotherme-5: AWS Classification E8018-B6. Developed for service temperatures up to 600˚C for oil refineries

1975 - D&H 1400: Developed and used for hardfacing of hot shearing blades in steel plants

1976 - Supratherme- Ni (Spl): AWS E8018-G. Approved by engineers India Ltd.

1977 - Rutox-F (U) and Batox-F (U): Fully austenitic stainless steel electrode

1978 - LoTherme range of low heat input electrode for repair and maintenance welding

in service industries to conserve precious materials and components

1979 - Further developments in electrodes for urea service

1980 - Electrodes with extra low hydrogen for welding under high relative humidity conditions