supply of bolster spring inner for blc wagon to rdso drg. no. contr.- 9404-s-7, alt.no.7 or latest itembolster spring inner for blc wagon to rdso drg. no. contr.- 9404-s-7, alt.no.7 or latest item,bolster spring inner for blc wagon to rdso drg. no. contr.- 9404-s-7, alt.no.7 or latest it em -2 & other technical requirements conforming to rdso spec. no. wd-01-hls-1994, rev.3 of jan-2009, read with all amendment, latest amendment no.3 of august.2019, materialgr.60si7, confirming to is 3195 -1992, amend.no.2 of september 2000, specification as per annexure attached. [ warranty period: 30 m onths after the date of delivery ] ]