Half Round Tube Shield Half Round Tube Shields by Ladhani Metal Corporation are engineered to protect boiler tubes, superheaters, and heat exchanger coils from erosion, corrosion, scaling, and ash deposition. These shields are widely used in thermal power stations, steam generation units, and waste heat recovery systems to prolong tube life and maintain energy efficiency. Their semi-cylindrical shape enables secure coverage of curved or straight tube surfaces, particularly in high-wear and abrasive flow regions. SS 316L Half Round Tube Shield for LTSH Tube The SS 316L Half Round Tube Shield is manufactured using low-carbon austenitic stainless steel grade 316L, known for its excellent resistance to chloride-induced corrosion, pitting, and crevice attack. Its lower carbon content minimizes the risk of carbide precipitation during welding, making it highly suitable for environments with frequent thermal cycling and corrosive gas exposure. Specifically designed for Low Temperature Superheater (LTSH) applications, this shield safeguards boiler tubes from soot erosion, acidic flue gases, and surface degradation. The Low Temperature Superheater (LTSH) is a section in a boiler where saturated steam from the steam drum is superheated to a moderately higher temperature before entering the high-temperature superheater stages. Positioned in areas with relatively lower flue gas temperatures, the LTSH helps improve thermal efficiency and reduces moisture content in steam. Due to constant exposure to abrasive flue gases and ash, LTSH tubes are prone to wear and require protective shielding, such as half round tube shields, to extend service life. Ladhani Metal Corporation is a leading manufacturer, supplier, and exporter of SS 316L Half Round Tube Shields for LTSH systems, delivering corrosion-resistant, durable, and performance-oriented solutions tailored to thermal protection needs. Chemical Composition of SS 316L – 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): 16.0 – 18.0% • Nickel (Ni): 10.0 – 14.0% • Molybdenum (Mo): 2.0 – 3.0% • Iron (Fe): Balance Applications: Designed for LTSH and low-temperature convection zones exposed to acidic gas environments, moisture, or chlorides, where enhanced corrosion resistance is required. Uses • Installed on LTSH tube surfaces in utility boilers to guard against flue gas corrosion and thermal wear • Shields tubes in HRSGs, economizers, and convection coil banks exposed to ash-laden gas flow • Used in waste heat recovery units operating with corrosive fuel byproducts • Ideal for process boilers in coastal, marine, or high-humidity environments • Protects tube surfaces in low to moderate heat applications where weldability is a concern Features • Excellent corrosion resistance – Resists chloride, acidic gas, and flue-induced degradation • Enhanced weldability – Low carbon content minimizes sensitization during installation • Precision fabrication – Custom-sized to match LTSH tube geometry and coil configuration • Quick installation – Compatible with clamp-on, tack weld, or banding methods • Reduced maintenance – Extends tube service life in flue gas zones, minimizing replacement costs • Available in varied thicknesses and lengths per system specifications Applications • thermal power plants – Shields LTSH tubes from moisture corrosion and fly ash erosion • chemical and refinery boilers – Protects superheater coils exposed to process gases and acidic residues • waste heat recovery – Installed in WHRBs to protect low-temperature return bends and convection sections • steam generation systems – Guards against corrosion in zones with flue gas condensation • marine and coastal facilities – Effective in chloride-laden environments requiring enhanced protection Conclusion The SS 316L Half Round Tube Shield for LTSH Tube by Ladhani Metal Corporation – manufacturer, supplier, and exporter – offers high-quality protection for boiler and superheater tubes in corrosive, low-temperature applications. With outstanding corrosion resistance and excellent performance under thermal stress, it ensures long-term durability and minimal maintenance in critical energy systems. For custom sizes, material consultation, or pricing details, please contact Ladhani Metal Corporation.
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