tender for bolster spring inner for blc wagon to rdsos drg. no. contr.-9404-s-7, alt.no.7.item.2 & othertechnical requirements conforming to rdso spec. no.wd-01-hls-1994, rev.3 of jan-2009, read with allamendment, latest amendment no.3 of august.2019, material gr.60si7, confirming to is 3195-1992,amend.no.2 of september 2000.
