Ladhani Metal Corporation offers Cr25Ni20 Half Round Tube Shields specially designed to protect reheater (R/H) tubes in boilers, power plants, and industrial steam systems. Reheater tubes carry steam through the reheater section of the boiler, where it is reheated after partial expansion in the high-pressure turbine to enhance efficiency and prevent moisture formation. Manufactured from high-alloy austenitic stainless steel grade Cr25Ni20, these shields provide exceptional resistance to high-temperature oxidation, carburization, and flue gas corrosion, making them suitable for extreme thermal and erosive environments. Function of R/H Tubes • Carry steam through the reheater section of the boiler • Exposed to very high temperatures (often > 540°C) and erosion from flue gases • Often protected with Half Round Tube Shields in high-velocity and ash-laden zones Ladhani Metal Corporation manufactures, supplies, and exports Cr25Ni20 Half Round Tube Shields in a variety of lengths, diameters, and thicknesses to meet the requirements of both domestic and international clients. Cr25Ni20 Grade Chemical Composition – Austenitic Stainless Steel • Carbon (C): ≤ 0.20% • Manganese (Mn): ≤ 2.00% • Phosphorus (P): ≤ 0.030% • Sulfur (S): ≤ 0.030% • Silicon (Si): ≤ 1.50% • Chromium (Cr): 24.00 – 26.00% • Nickel (Ni): 19.00 – 22.00% • Iron (Fe): Balance Uses • Protects reheater tubes against oxidation, scaling, and high-velocity erosion • Shields R/H tubes from soot blower damage and ash particle impact • Extends service life of boiler tubes in extreme thermal environments • Applicable in WHRBs, HRSGs, utility boilers, and high-temperature industrial furnaces Features • Excellent resistance to oxidation and scaling at elevated temperatures • High structural stability and mechanical strength under thermal stress • Precision-engineered design for accurate fit and reliable protection • Long service life in corrosive and high-temperature boiler conditions Applications • Power generation boilers – Protection for reheater tubes under extreme thermal loads • Waste heat recovery systems – Shields R/H tubes from flue gas erosion • Industrial steam plants – Reliable under fluctuating temperature operations • Petrochemical furnaces and process heaters – Effective in high-temperature corrosive atmospheres Conclusion The Cr25Ni20 Half Round Tube Shield for Reheater (R/H) Tubes by Ladhani Metal Corporation offers outstanding high-temperature strength, oxidation resistance, and durability for demanding boiler environments. With custom manufacturing, export-ready specifications, and precision engineering, these shields significantly extend tube life and reduce maintenance downtime. For supply details and technical assistance, contact Ladhani Metal Corporation.
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