supply of supply of valves, bushes, bearing and liner consists of 10 items , supply of valves, bushes, bearing and liner consists of 10 items for distributor valve, air valve, horn block, suspension arrangement, frame, wi nterthur bogie and boiler assemblies of x class locomotives as per annexure. note: 1. item no (1) to (10) consists of one set. 2.for equivalent material specifi cation refer goc/x/specx-032 3. if any casting defects are found during the machining of supplied items within the warranty period, those items need to be re placed by the concerned firm within one month. 4. for material specification, the firm has to submit nabl accredited lab test certificate along with the materi al supply. [ warranty period: 30 months after the date of delivery ] ]