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A water cooled duct forms part of or substitutes the wall of a metallurgical furnace, such as an electric arc furnace (EAF), ladle refining furnace (LF), vacuum oxygen decarburization furnace (VOD), or argon oxygen decarburization furnace (AOD). These components are also widely used in dedusting systems, including the 4th hole duct, water-cooled settling chamber, and dedusting pipelines, where extremely high-temperature flue gases are present.
Water cooled ducts are generally manufactured in two main types:
• Tube type coolers: formed by parallel seamless pipes connected by headers at both ends, with internal baffles to create a serpentine cooling path.
• Box type coolers: fabricated from steel plates or sheets, internally reinforced with baffle plates that define a serpentine water flow channel.
In both designs, fluid orifices are provided at direction changes within the serpentine path. These allow minor flow bypassing to prevent water stagnation, eliminating risks of hot spots and steam bubbles. Welded projections on the furnace-facing side allow the panel surface to be naturally covered by a protective layer of refractory or solidified slag, further enhancing durability.
Engineered for high durability and superior heat dissipation, our water cooled ducts and panels ensure stable performance under extreme thermal conditions typical of steelmaking operations. Upgrade to the superior thermal management of water cooled ducts today — contact our experts for a free consultation on integrating water-cooled systems into your infrastructure.
All our water-cooled ducts and panels are fabricated using GB 20G seamless boiler tube, renowned for its excellent high-temperature strength, thermal conductivity, and resistance to oxidation and corrosion. The table below lists commonly recognized equivalent materials in different international standards:
Standard | Material Grade | Description / Equivalent Notes |
China (GB) | 20G | Seamless boiler steel tube, widely used for high-temperature pressure parts |
DIN / EN | DIN 17175 St35.8 / 1.0305 | Equivalent to 20G in chemical composition and mechanical properties |
ASTM (USA) | SA-210 A1 / SA-192 | Equivalent carbon steel seamless boiler tubes, similar tensile and yield strength |
JIS (Japan) | STB 35 | Japanese standard boiler steel tube equivalent to GB 20G |
GOST (Russia) | 20 / 20KP | Carbon steel for boiler and pressure vessels, comparable to 20G |
All materials are strictly tested to ensure leak-tight water channels, dimensional precision, and long service life under high heat load conditions.
1. Proven Export Experience
Our water-cooled panels and ducts are successfully exported to Germany, the United States, and the Middle East (MINA region), earning strong customer recognition for consistent quality and reliability.
2. Superior Material
We use only GB 20G seamless boiler tube, offering excellent high-temperature strength, pressure resistance, and long service life under extreme furnace conditions.
3. Advanced Manufacturing Process
All ducts and panels are fabricated through TIG (argon arc) root welding followed by MIG (CO₂) continuous welding, ensuring deep penetration, low defect rate, and reliable water-tight joints.
4. Surface Treatment Excellence
Each product undergoes shot blasting and heat treatment, followed by multi-layer high-temperature resistant painting to guarantee long-term corrosion resistance and appearance durability.
5. Full Quality Control
From raw material inspection to hydraulic testing and dimensional verification, every stage is strictly supervised to ensure precise fitment and performance consistency for EAF, LF, VOD, AOD furnaces and dedusting systems.
A water cooled duct forms part of or substitutes the wall of a metallurgical furnace, such as an electric arc furnace (EAF), ladle refining furnace (LF), vacuum oxygen decarburization furnace (VOD), or argon oxygen decarburization furnace (AOD). These components are also widely used in dedusting systems, including the 4th hole duct, water-cooled settling chamber, and dedusting pipelines, where extremely high-temperature flue gases are present.
Water cooled ducts are generally manufactured in two main types:
• Tube type coolers: formed by parallel seamless pipes connected by headers at both ends, with internal baffles to create a serpentine cooling path.
• Box type coolers: fabricated from steel plates or sheets, internally reinforced with baffle plates that define a serpentine water flow channel.
In both designs, fluid orifices are provided at direction changes within the serpentine path. These allow minor flow bypassing to prevent water stagnation, eliminating risks of hot spots and steam bubbles. Welded projections on the furnace-facing side allow the panel surface to be naturally covered by a protective layer of refractory or solidified slag, further enhancing durability.
Engineered for high durability and superior heat dissipation, our water cooled ducts and panels ensure stable performance under extreme thermal conditions typical of steelmaking operations. Upgrade to the superior thermal management of water cooled ducts today — contact our experts for a free consultation on integrating water-cooled systems into your infrastructure.
All our water-cooled ducts and panels are fabricated using GB 20G seamless boiler tube, renowned for its excellent high-temperature strength, thermal conductivity, and resistance to oxidation and corrosion. The table below lists commonly recognized equivalent materials in different international standards:
Standard | Material Grade | Description / Equivalent Notes |
China (GB) | 20G | Seamless boiler steel tube, widely used for high-temperature pressure parts |
DIN / EN | DIN 17175 St35.8 / 1.0305 | Equivalent to 20G in chemical composition and mechanical properties |
ASTM (USA) | SA-210 A1 / SA-192 | Equivalent carbon steel seamless boiler tubes, similar tensile and yield strength |
JIS (Japan) | STB 35 | Japanese standard boiler steel tube equivalent to GB 20G |
GOST (Russia) | 20 / 20KP | Carbon steel for boiler and pressure vessels, comparable to 20G |
All materials are strictly tested to ensure leak-tight water channels, dimensional precision, and long service life under high heat load conditions.
1. Proven Export Experience
Our water-cooled panels and ducts are successfully exported to Germany, the United States, and the Middle East (MINA region), earning strong customer recognition for consistent quality and reliability.
2. Superior Material
We use only GB 20G seamless boiler tube, offering excellent high-temperature strength, pressure resistance, and long service life under extreme furnace conditions.
3. Advanced Manufacturing Process
All ducts and panels are fabricated through TIG (argon arc) root welding followed by MIG (CO₂) continuous welding, ensuring deep penetration, low defect rate, and reliable water-tight joints.
4. Surface Treatment Excellence
Each product undergoes shot blasting and heat treatment, followed by multi-layer high-temperature resistant painting to guarantee long-term corrosion resistance and appearance durability.
5. Full Quality Control
From raw material inspection to hydraulic testing and dimensional verification, every stage is strictly supervised to ensure precise fitment and performance consistency for EAF, LF, VOD, AOD furnaces and dedusting systems.
