bids are invited for chain sprocket -duplex sprocket for ingot guide of icm pitch = 1/2 inch (12.7 mm) bs no of teeth = 30 both side hubs of equal length hub dia = 60.5 mm;hub length (throu bore) = 40 mm with pilot bore = 20 mm material:c-45/en-8 sprocket teeth should be flame hardened to min 300 bhn. , duplex sprocket for 1/2 inch pitch british standard roller chain as per drawing no : chb/sp/mech/a4/7175 material: as per drawing sprocket teeth should be flame hardened to min.300 bhn , tension sprocket for cooling convyor. as per item-4 of drawing no:chb/mech/spr/a1/7747 sh-2/2 material: as per drawing, de sprocket for secondary cooling conveyor. as per drawing no:chb/mech/spr/a3/10729 rev-0 material: as per drawing sprocket teeth should be flame hardened to min 300 bhn, nde sprocket for secondary cooling conveyor. as per item no-1 of drawing no:ch-b/mech/spr/a2/10602 rev-2 material: as per drawing sprocket teeth should be flame hardened to min 300 bhn total quantity : 60