Procurement of drg 100 mm rev 00 sand casted round of diameter d 100mm length l 500mm in rough machined condition n std aa19936, drg 18 mm rev 00 sand casted round of diameter d 18mm length l 300mm in rough machined condition n std aa19936, drg 60mm rev 00 sand casted round of diameter d 60mm length l 400mm in rough machined condition n std aa19936 and other related items