Tenders for Supply of Water Immersion Heater 4Kw 230/440 Volts, Flange 2 Bspp Depth Of Immersi On 260Mm As Per Is: 4159 Of 2002 Reafirmed Year 2017 With Amendment No. 1&2 With Isi Mark Mineral Filled Sheathed Heating Element Warranty Period: 30 Months After The Date Of D Elivery