supply of top 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: 12 months after the date of delivery ] ]