Tenders for Supply of Ceramic Tubular Heater With Nichrome Wire 80:20 Ratio Heaters Of 4 Kw, 230V/Ac, Indirect Heat Type, Dia: 31+/-0.5Mm, Length: 685Mm Heating Zone-640Mm, All Other Dimensions, Materials Are As Per Revised Drawing No: Els/Ed/Ocp/Heater -2, Dated On 10.07.2025 For Oil Circulation Plant.