supply of set of suspension spring (helical) of wag 7 loco bogieset of suspension spring (helical) of wag 7 loco bogie,set of suspension spring (helical) of wag 7 loco bogie as per sketch no.bsl/elw/sk.no. 9111 alt-03. set comprising of two items & thirty two nos. [1] spring outer-rdso drg no.skvl-039. alt- 3 [qty. -16 nos.] compressed height working load of outer spring 451 to 447 mm in red colour code. [2 ] spring inner-rdso drg. no. skvl-037-alt-3 . [qty. 16 nos.] compressed working load of inner spring 4 06 to 402 mm in red colour code. [spl cond:bulk or entire qty reserved to be procured from rdso appr oved sources only].(or latest alt will be applicable as on invitation of tender date). [ warranty period: 30 months after the date of delivery ] ] => limited