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Tender For supply of pressure machine hole cover and frame di with ss304 nut bolt arrangement with steel inserts the di frame and cover of nominal size opening of 560mm internal diameter of the opening is proposed to be installed in the storm water drains and it is intended to make the machine hole frame and cover tight ductile iron heavy duty minimum d 250 type man hole covers frame shall be manufactured according to bsen 124 without hinge with rubber ring gasket for sealing with round shape including painting with black bitumen coating the cover and frame shall be provided with threaded arrangement for fixing or arrangement for fixing frame and cover in with ss bolts the rubber ring gasket shall be as per is5382 shall be provided for making the frame and cover water tight