supply of ball screw assembly , ball screw assembly to rwf drawing no 7054000211450 for station-2/cnc ro ughing machines in w-axis movement (head stock). special conditions: warranty period: warran ty of 18 months from the date of delivery or 12 months from date of fitment or use whichever is early. 2.material test certificate (mtc) from nabl accredited laboratories for chemical composition / physica properties should be submitted along with the material supply. 3. inspection certificate issued by man ufacturers to be submitted along with supply. 4.only ball screw manufacturers to quote. p.o copies or credentials for supplying similar item to psus or govt. agencies to be submitted along with supply. [ warranty period: 18 months after the date of delivery ] ]