Structure: electric tube is a metal tube housing (including stainless steel, copper), along the central axis of the tube uniform spiral heating alloy wire (nickel-chromium, iron-chromium alloy) compacted fill its gap with good thermal insulation properties of the oxide magnesia, both ends of the nozzle with a silicone seal, the metal sheathed heating elements can heat the air, metal molds and various liquids. http://www.chinapulian.cn our company can be customized according to customer requirements of various shapes, various power voltage, nickel-plated surface of the pipe to do, polish, hair green, blasted the main parameters of electric tube: 1 Power supply voltage, V; 2. Power frequency, Hz; 3. Rated voltage, V; 4. Rated power, kw; 5. Working temperature, ℃; 6. diameter, (single-head electric tube mold aperture), mm ; 7. Expand length, mm; 8. Dimensions, mm; power calculation formula: 1, tank internal dimensions, length × width × height, the liquid level. 2, the process temperature, initial temperature, end temperature. 3, the process requires heating or cooling time (h). Heat exchange (heating, cooling): Q = V × C × r × β (t2-t1) / T (kcal) V: solution volume (liters) C: specific heat of solution (kcal / liter × ℃) r : gravity (kg / liter) t1: initial solution temperature t2: termination solution temperature β: heat loss coefficient (taken 1.10-1.30) Q is positive, compared to the required temperature heat Q is negative, this is needed to cool the cold the amount of T: heating or pre-cooling time h (hours) electric power equivalent (electrolysis heat): Q = 0.864 × I × V (Kcal / h) I: total current AV: cell voltage V