short dated tender - bids are invited for elbow, equal, 135 degrees conforming to is 1239 (part 2) , plug confirming to is 1239 (part 2) , pipe unions confirming to is 1239 (part 2) , steel sockets confirming to is 1239 (part 2) , running nipples, close taper nipples and barrel nipples confirming to is 1239 (part 2) , elbows, tees and crosses, equal confirming to is 1239 (part 2) , elbows reducing confirming to is 1239 (part 2) , socket reducing confirming to is 1239 (part 2) , readymade bituminous pothhole patching mix as per is 217 cutback bitumen, is 14982 anti - stripping agent , two way valve , nipples, hexagon, equal confirming to is 1239 (part 2) , screwed ends of fittings confirming to is 1239 (part 2) , polytetrafluoroethylene (ptfe) thread sealing tape