Half Round Tube Shield Half Round Tube Shields by Ladhani Metal Corporation are precision-engineered components used to protect boiler and heat exchanger tubes from erosion, scaling, and high-temperature corrosion. These shields are widely applied in industrial systems exposed to thermal cycling, aggressive gases, and particulate flow. Their half-round shape allows for simple and secure installation over straight or curved tube surfaces, extending tube life and reducing maintenance needs. SS 304L U Type Outer Half Round Tube Shield The SS 304L U Type Outer Half Round Tube Shield is manufactured from low-carbon austenitic stainless steel, SS 304L, offering enhanced weldability and resistance to intergranular corrosion. This shield is specifically designed to protect the outer curvature of U-bend tubes in high-temperature and moderately corrosive environments such as boilers, superheaters, and heat exchangers. The outer U-type configuration focuses on shielding the most exposed area of return bends from flue gas erosion, slag impact, and thermal oxidation. • Outer U Type Half Round Tube Shield – Provides targeted protection to the external arc of U-bend tubes, reducing surface degradation caused by hot gas streams and mechanical wear. Ladhani Metal Corporation supplies SS 304L U Type Outer Half Round Tube Shields with precision-engineered profiles to ensure long-term performance and durability in harsh industrial conditions. Chemical Composition of SS 304L – Low-Carbon Austenitic Stainless Steel • Carbon (C): ≤ 0.035% • Manganese (Mn): ≤ 2.00% • Phosphorus (P): ≤ 0.045% • Sulfur (S): ≤ 0.030% • Silicon (Si): ≤ 1.00% • Chromium (Cr): 18.0 – 20.0% • Nickel (Ni): 8.0 – 12.0% • Iron (Fe): Balance Applications: Well-suited for moderately corrosive, high-temperature environments where resistance to weld decay and oxidation is required. Uses • Protection of outer U-bend surfaces in superheaters and reheaters in thermal power generation systems • Shielding external arcs in heat exchangers and condensers in the chemical and petrochemical industries • Outer bend coverage in waste heat recovery boilers (WHRBs) and HRSGs exposed to flue gases and particulate flow • Used in marine, food-grade, and process steam systems where chloride resistance and cleanliness are important • Ideal for systems requiring excellent weldability and post-fabrication corrosion resistance Features • Excellent corrosion resistance – Low carbon content improves resistance to intergranular corrosion after welding or high-heat exposure. • Outer U-bend protection – Specifically shaped to guard the outer surface of U-bend tubes from high-temperature gas flow and slag contact. • High-temperature performance – Performs reliably in temperatures up to 870°C, resisting scale formation and oxidation. • Custom fit – Engineered to precisely match tube diameters and bend radii for a snug and stable fit without displacement. • Easy to install – Can be quickly mounted using clamps, stainless banding, or tack welds without requiring system downtime or disassembly. • Long service life – Withstands thermal cycling and corrosive gas exposure to minimize tube damage and maintenance intervals. Applications • power plants – Used in superheaters and reheaters for protecting the outer arcs of return bends from flue gas and heat-related scaling. • chemical processing – Shields tube surfaces in exchangers and preheaters that experience moderate chemical attack and thermal fatigue. • WHRBs and HRSGs – Installed on outer curves of U-bend tubes to prevent erosion and reduce downtime in heat recovery systems. • marine and coastal facilities – Suitable for salt-laden environments where chloride resistance is essential for sustained performance. • food, beverage, and clean process industries – Provides hygienic protection for tube bends in steam and thermal processing systems. Conclusion The SS 304L U Type Outer Half Round Tube Shield by Ladhani Metal Corporation offers dependable protection for the most vulnerable outer surfaces of U-bend tubes in high-temperature and moderately corrosive applications. With its low-carbon alloy composition, it combines superior corrosion resistance with excellent weldability, making it ideal for power generation, petrochemical, marine, and process industries. Customizable to your system’s specifications, this shield ensures long-lasting performance, reduced maintenance, and improved system reliability. For technical consultation, custom orders, or quotations, please contact Ladhani Metal Corporation.
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