rate contract for development and supply of spares for equipments under mechanical maintenance at panipat naphtha cracker.-development of shaft-500 ( en-8 / en-9 ) ( length upto 500 mm ) .development of shaft sleeve-200mm ( s-410 ) ( length : 101 mm to 200 mm ) . moc, development of shaft sleeve-100mm ( s-316 ) ( length : upto 100 mm ) . moc : ss-316., development of shaft sleeve-200mm ( s-316 ) ( length : 101 mm to 200 mm ) .moc : ss-316., internal diameter of brg. hsg.:80-89mm, shaft diameter : 8 - 12 mm, development of wear rings ( ss-316 / 304 ) , development of labyrinth ( aluminium ) , coupling boring coupling boring including fabrication of key way and way for grab screw ( including supply of grab screw ) .fab. & supply of valve handwheel ( moc-ms ) fabrication and supply of valve hand wheel based on sample or drawing provided by iocl. all material, fabrication and machining are in contractors scope. ( material of construction #ms ) etc