Agglomerated Submerged Arc Welding Flux, R.D.S.O. Approved Class F-2, As Per Irs M39/20 Or Latest, Suitable For Two Run, Multirun Submerged Arc Welding Of Steel To Is:2062/11(R2016) E300 & E350, Is:2002/09(R2018)Grade I&Ii, Is:1875/92(R2014)Class Ii&Iia Or Other Equivalent Steel. Make/Brand: R.D.S.O. Approved Brand Only. ]