supply of modified hard grease nipplemodified hard grease nipple,supply of elbow for air brake connection for x class locomotive as per drg no. goc/x/pc-17-22010 note: 1.for material specifica tion, the firm has to submit nabl accredited lab test certificate along with the material supply 2. for equivalent material specifications, refer goc/x/spec-x- 032. [ warranty period: 30 months after the date of delivery ] ] , modified hard grease nipple (lubricating nipple for rack and adhesion drive ) complete of x - class locomotive as per drawi ng no.goc/g/sk-2-12976 in assembled condition note: for material specification, the firm has to submit nabl accredited lab test certificate along with t he material supply [ warranty period: 30 months after the date of delivery ] ] , supply of oil nipple of mechanical lubricator (5 items) in assembled condition for x-class locomotive as per drawing no. goc/g/sk-3-11488 not e: (1) item no [1] to [5] consists of one set. (2)for material specification, the firm has to submit nabl accredited lab test certificate along with the material su pply [ warranty period: 30 months after the date of delivery ] ] => limited