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Main Features
Item | Description |
Application | EAF Fourth Hole, Water Cooled Duct, Combustion Chamber, Dedusting System |
Material | 20G / 20G-D Boiler Steel, Wear Resistant Steel |
Welding | GTAW (TIG) root welding with multi-layer filling |
Heat Treatment | Overall stress relieving heat treatment |
Surface Treatment | Shot blasting to Sa2.5 standard |
Inspection | UT / PT / Hydraulic Pressure Test |
Advantages | High cooling efficiency, wear resistance, long service life |
Manufacturing Highlights
· High quality 20G and wear resistant steel materials
· Precision fabrication and strict dimensional control
· Argon arc welding (TIG) root pass for reliable weld penetration
· Overall heat treatment to reduce residual stress
· Shot blasting for improved surface quality and coating adhesion
· 100% hydraulic pressure testing before delivery



Benefits
· Extended furnace campaign life
· Reduced refractory consumption
· Improved operational safety
· Lower maintenance frequency
· Stable performance under severe steel plant conditions
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