supply of secondary yaw damper train18secondary yaw damper train18,yaw damper for train-18, emu us & memu us coaches to drg.no.train18/mc/a c-0-5-012,item-1,alt-b.and in compliance to rdso specification rdso/cg-18005 or en-1380 2(latest revision). 1. firm has to submit oem drawings with detailed dimensions & cha racteristics. 2. type test shall be conforming to rdso cg-18005 (latest revision) or e n-13802. 3. service trials shall be as per rdso cg-18005 (latest revision). special condition : 1. proto type sample (including type test)to be got approved from icf before manuf acturing for bulk supply. 2. the firms who have already supplied the same item need not get fresh prototype approval. [ warranty period: 72 months after the date of delivery ]