supply of top bush for vertical ram of smtc borertop bush for vertical ram of smtc borer,top bush for vertical ram of smtc borer to rwf drg. no. 705401210520. spec ial conditions: warranty period: warranty of 18 months from the date of delivery or 12 months from d ate of fitment or use whichever is early. 2. material test certificate (mtc) from nabl accredited labora tories for chemical composition / physical properties should be submitted along with the material supp ly.3. inspection certificate issued by manufacturers to be submitted along with supply of material for d imensional aspects. [ warranty period: 18 months after the date of delivery ] ] => limited