Twin wall stainless steel flue is a high-performance industrial exhaust device composed of inner and outer stainless steel layers, designed for efficient and corrosion-resistant flue gas emission. Manufactured by Tengshida (Hebei) Environmental Engineering Co., Ltd., the twin wall stainless steel flue adopts 304/316L stainless steel for both inner and outer walls, with an insulated interlayer to reduce heat loss and prevent condensation. Equipped with precision flange connections and sealing gaskets, ensuring zero leakage, and its smooth inner wall minimizes dust accumulation. Compliant with ISO 9001 standards, it is widely used in chemical plants, refineries, and thermal power plants requiring high-temperature and corrosive flue gas treatment.
Product Parameters
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Technical Indicators |
Specification Parameters |
|
Diameter Range |
500mm-6000mm |
|
Height Range |
10m-150m |
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Wall Thickness |
1.5mm-3.0mm |
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Material |
304/316L Stainless Steel |
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Operating Temperature |
-30℃~800℃ |
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Corrosion Resistance |
C5-M grade (salt spray test ≥5000h) |
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Warranty Period |
10-year structural warranty |
Product Features
Dual-Layer Corrosion Resistance
304/316L stainless steel layers resist acid, alkali, and salt spray corrosion, extending service life to 30 years.
Thermal Insulation
Interlayer filled with aluminum silicate fiber wool reduces surface temperature to ≤80℃, avoiding safety hazards.
Lightweight Design
20% lighter than carbon steel flues, reducing foundation load and installation costs by 15%.
Leak-Proof Structure
Double-layer sealing gaskets and precision welding ensure leakage rate ≤5ml/h under rated pressure.
Main Applications
Thermal Power Plants
Emission of high-temperature flue gas after desulfurization and denitrification processes.
Chemical Plants
Safe discharge of corrosive industrial waste gas containing sulfuric acid or hydrochloric acid.
Oil Refineries
Handling of high-temperature and volatile flue gas from distillation units.
strucSteel Mills
Exhaust of dust-laden and high-temperature flue gas from smelting furnaces.
FAQ
Q: Can it be customized for coastal areas?
A: Yes, we offer 316L stainless steel and fluorocarbon coating upgrades for coastal high-corrosion environments, extending corrosion life by 50%.
Q: What is the installation cycle?
A: Modular prefabrication allows on-site assembly of a 30m flue in 5-7 working days, 40% faster than traditional welding.
Q: Does it require regular maintenance?
A: The smooth inner wall and corrosion-resistant material require only annual visual inspection, reducing maintenance costs by 60% compared to carbon steel flues.
Q: What is the maximum pressure it can withstand?
A: It supports a working pressure range of -5kPa to +10kPa, suitable for most industrial exhaust systems.
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