procurement of - helical spring centreless ground for axle box guide arrengement of emu tr. coaches. to drg. no.dc / emu-0-1-002 alt-s / 5 and rdsos spec. no. wd-01-hls-1994 rev.3 of jan.2009 with amendment slip no. 04 of october 2020, material-is: 3195., helical spring centreless ground for axle box guide arrengement of emu tr. coaches. to drg. no.dc / emu-0-1-002 alt-s / 5 and rdsos spec. no. wd-01-hls-1994 rev.3 of jan.2009 with amendment slip no. 04 of october 2020, material-is: 3195. the spring shall be guaranteed as per para 12.0 of rdsos specn no. wd-01-hls-1994 rev.3 of jan.2009 with amendment slip no. 04 of october 2020 [ warranty period: 30 months after the date of delivery ]