Details: supplying placing packing and leveling of filter gravel as per is 8419 (part-1) 1977, with latest amendment of hard spherical and uniform size properly washed and cleaned for each layer ranging with media (3/4" x 1/2", 1/2" x 1/4", 1/4" x 1/8") with 16/32 mesh sieve sand including all and as per direction of engineer-in-charge. charges for required quantity of sand for replacing the total existing bed materials (media). providing and fixing pvc strainer in the filter bed inside the vessel as per isi specification (750 pieces 5/8 umbrella type pvc) including all and as per the direction of eic. charges for scraping of inside surface of vessel & coating with anti corrosive black bituminous paint. cleaning the horizontal vessel of 15000 gph inside with air pressure and painting the same with two or more coats with anti corrosion black bituminous paint and outside surface also to be cleaned properly and painted with enamel paint of two or more coats including valves etc, as per direction o
Sector: Mining