supply of helical spring centreless groundhelical spring centreless ground,helical spring centreless ground, as per icf drg no. dc/emu- 0-1-002. alt- r/5 or latest . specification: rdso spec no. wd- 01-hls-1994, rev.03 of jan 2009 with amend no. 1 of sept 2016 ( material is 3195) or latest. (supply condition 1.springs with only green group as per icf drg. no. icf/ std-9-0,alt-b or latest will be accepted 2. material to be supplied along with material test certificate f or each spring. (note:- this item is safety, to be supplied by icf approved vendor.) [ warranty perio d: 60 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ]