supply of secondary vertical damper for train-18,secondary vertical damper for train-18,,secondary vertical damper for train-18, emu us & memu us coaches to drg .no.train18/mc/ac-0-5-010, item-1,alt-b and in compliance to rdso specification rdso/cg- 18005 or en-13802(latest revision). 1. firm has to submit oem drawings with detailed di mensions & characteristics. 2. type test shall be conforming to rdso cg-18005 (latest revision) or en-13802. 3. service trials shall be as per rdso cg-18005 (latest revision) [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permi tted: max 8 lacs ] ]