Tender For supply of steel pipes for water and sewage as per is 3589 (q3) , alum ferric , alum ferric crystal , bleaching powder , chlorotex reagent , copper sulphate gr i 25 point 03 , poly aluminium carbon , polyelectrolyte chemical , sodium bisulphate dry acid , sodium carbonate soda ash , sodium hypochlorite 5 point 25 percent , trichloroisocyanuric acid 90 tcca 90 1 ppm