Tender For supply of rail profile weld grinder as per rdso specification no tm/sm/10 dated 16/08/1991 (first revision july 2020) and, the annual maintenance contract period is valid for 4 years after expiry of 2years warranty period. with rali wolf ag 9 heavy duty angle grinder 9 inches 2200 w and 5600 rpm [ warranty period: 30 months after the date of delivery ]