1. Square-tube-weld sheet metal bracket with spraying plastics; 2. Heating: pre-heating tube and oxidation tube furnace separately heat and control temperature, ensuring the temperature fluctuation in the constant-temperature zone within the specified range;3. Oxidation furnace tube adopts two-section ceramic-loop heating and the pre-heating tube adopts the built-in stainless steel fin heating tube ; 4. Fiber heat insulation and stainless steel shell; 5. Air passes through valve, flowmeter, pre-heating tube, static mixing device, aerator and finally enters into oxidation furnace tube; Technical Specification Model: AT232ASize of oxidation furnace tube¢89×1000mm (volume 5L) Material: of oxidation furnace tube304# stainless steelSize of pre-heating tube¢89×600mm Material: of pre-heating tube304# stainless steelMax. heating temperature≤400℃Temperature controlling accuracy±1℃Max. heating rate5℃/minTemperature controlling program controlling 30 segments Length: of constant temperature zone400mmMax. air inlet flow 2.5m3/H Power supply: AC220V 50Hz