cast steel bolster for blc wagon to rdso drg no contr 9404 s 5 alt 10 item 1 to 4 other t echnical requirements confirming to rdso spec no conter lccf 20 c 96 rev 2 with amend 2 of sept 2016 warranty period 30 months after the date of delivery quantity tolerance 5 age item category normal total po value variation permitted max 8 lacs