supply of one metre long fish plates for 52 kg. rails to rdso drawing no. t-5915 as per irs specification no. irs: t-1-2021 ( prov. ) with corrigendum no.01 of september 2018 as amended up to dateone metre long fish plates for 52 kg. rails to rdso drawing no. t-5915 as per irs specification no. irs: t-1-2021 ( prov. ) with corrigendum no.01 of september 2018 as amended up to date, one metre long fish plates for 52 kg. rails to rdso drawing no. t-5915 as per irs specification no. irs: t-1-2021 ( prov. ) with corrigendum no.01 of september 2018 as amended up to date [ warranty period: 30 months after the date of delivery ]