HALF ROUND TUBE SHIELD FOR LTSH TUBE - LADHANI METAL CORPORATION

Introduction

Ladhani Metal Corporation is a reputed manufacturer and global exporter of boiler tube protection components used in high-temperature and high-erosion environments. The Half Round Tube Shield for LTSH Tube is specifically designed for Low Temperature Superheater (LTSH) tubes, offering targeted protection against corrosion, abrasion, and thermal fatigue. Engineered with precision, these shields are ideal for extending tube life in power generation and industrial steam systems.

What is a Half Round Tube Shield for LTSH Tube?

A Half Round Tube Shield for LTSH Tube is a semi-cylindrical sleeve that covers part of the outer surface of superheater tubes subjected to flue gas flow, ash erosion, or chemical attack. It is primarily used in LTSH sections of boilers where lower temperature steam is present, but the tubes remain vulnerable to operational wear and tear. These shields are manufactured to match tube diameter and radius specifications, ensuring a snug fit and reliable performance.

Purpose and Functionality

The purpose of the Half Round Tube Shield for LTSH Tube is to provide an additional wear layer to the exposed surfaces of superheater tubes, particularly where ash particles and acidic gases contribute to accelerated corrosion. Acting as a sacrificial barrier, these shields reduce the rate of wall thinning and prevent localized damage. Their installation is straightforward, enabling easy maintenance and component replacement without affecting the base tube integrity.

Key Features

· Tailored for Low Temperature Superheater tubes
· Manufactured from stainless steel and heat-resistant alloys
· Protects against erosion, corrosion, and fly ash impact
· Designed for easy clip-on or tack-weld installation
· Compatible with straight or gently curved tube sections
· Improves tube longevity and plant uptime

Product Range

Material Grades Offered by Ladhani Metal Corporation

We offer Half Round Tube Shields for LTSH Tube in a variety of high-performance alloys to meet diverse operating demands. Common grades include:

· Stainless Steel 304 / 304L
· Stainless Steel 316 / 316L
· Stainless Steel 310 / 310S
· Stainless Steel 410 / 420 / 430
· Cr25Ni20
· 1Cr25Ni20Si2
· Cr23Ni13
· 1Cr20Ni14Si2
· Other alloys available upon request

Chemical Composition of the Following Grades

1Cr18Ni9Ti
• Carbon (C): ≤ 0.12%
• Silicon (Si): ≤ 1.00%
• Manganese (Mn): ≤ 2.00%
• Phosphorus (P): ≤ 0.035%
• Sulfur (S): ≤ 0.030%
• Chromium (Cr): 17.0 – 19.0%
• Nickel (Ni): 8.0 – 11.0%
• Titanium (Ti): ≥ 5×C and ≤ 0.80%
• Iron (Fe): Balance

Cr25Ni20 (Similar to AISI 310)
• Carbon (C): ≤ 0.20%
• Silicon (Si): ≤ 1.50%
• Manganese (Mn): ≤ 2.00%
• Phosphorus (P): ≤ 0.035%
• Sulfur (S): ≤ 0.030%
• Chromium (Cr): 24.0 – 27.0%
• Nickel (Ni): 19.0 – 22.0%
• Iron (Fe): Balance

1Cr25Ni20Si2
• Carbon (C): ≤ 0.20%
• Silicon (Si): 1.00 – 2.50%
• Manganese (Mn): ≤ 1.50%
• Phosphorus (P): ≤ 0.035%
• Sulfur (S): ≤ 0.030%
• Chromium (Cr): 24.0 – 27.0%
• Nickel (Ni): 19.0 – 22.0%
• Iron (Fe): Balance

Cr23Ni13
• Carbon (C): ≤ 0.20%
• Silicon (Si): ≤ 1.50%
• Manganese (Mn): ≤ 2.00%
• Phosphorus (P): ≤ 0.035%
• Sulfur (S): ≤ 0.030%
• Chromium (Cr): 22.0 – 24.0%
• Nickel (Ni): 12.0 – 14.0%
• Iron (Fe): Balance

1Cr20Ni14Si2
• Carbon (C): ≤ 0.15%
• Silicon (Si): 1.00 – 2.50%
• Manganese (Mn): ≤ 1.50%
• Phosphorus (P): ≤ 0.035%
• Sulfur (S): ≤ 0.030%
• Chromium (Cr): 19.0 – 21.0%
• Nickel (Ni): 13.0 – 15.0%
• Iron (Fe): Balance

Stainless Steel 304 / 304L
• Carbon (C): ≤ 0.08% / ≤ 0.03%
• Silicon (Si): ≤ 1.00%
• Manganese (Mn): ≤ 2.00%
• Phosphorus (P): ≤ 0.045%
• Sulfur (S): ≤ 0.030%
• Chromium (Cr): 18.0 – 20.0%
• Nickel (Ni): 8.0 – 12.0%
• Iron (Fe): Balance

Stainless Steel 316 / 316L
• Carbon (C): ≤ 0.08% / ≤ 0.03%
• Silicon (Si): ≤ 1.00%
• Manganese (Mn): ≤ 2.00%
• Phosphorus (P): ≤ 0.045%
• Sulfur (S): ≤ 0.030%
• Chromium (Cr): 16.0 – 18.0%
• Nickel (Ni): 10.0 – 14.0%
• Molybdenum (Mo): 2.0 – 3.0%
• Iron (Fe): Balance

Stainless Steel 310 / 310S
• Carbon (C): ≤ 0.25% / ≤ 0.08%
• Silicon (Si): ≤ 1.50%
• Manganese (Mn): ≤ 2.00%
• Phosphorus (P): ≤ 0.045%
• Sulfur (S): ≤ 0.030%
• Chromium (Cr): 24.0 – 26.0%
• Nickel (Ni): 19.0 – 22.0%
• Iron (Fe): Balance

Stainless Steel 410
• Carbon (C): 0.08 – 0.15%
• Silicon (Si): ≤ 1.00%
• Manganese (Mn): ≤ 1.00%
• Phosphorus (P): ≤ 0.040%
• Sulfur (S): ≤ 0.030%
• Chromium (Cr): 11.5 – 13.5%
• Iron (Fe): Balance

Stainless Steel 420
• Carbon (C): 0.15 – 0.40%
• Silicon (Si): ≤ 1.00%
• Manganese (Mn): ≤ 1.00%
• Phosphorus (P): ≤ 0.040%
• Sulfur (S): ≤ 0.030%
• Chromium (Cr): 12.0 – 14.0%
• Iron (Fe): Balance

Stainless Steel 430
• Carbon (C): ≤ 0.12%
• Silicon (Si): ≤ 1.00%
• Manganese (Mn): ≤ 1.00%
• Phosphorus (P): ≤ 0.040%
• Sulfur (S): ≤ 0.030%
• Chromium (Cr): 16.0 – 18.0%
• Iron (Fe): Balance

Applications

· LTSH superheater sections in coal and biomass-fired boilers
· Economizers operating in corrosive or acidic gas environments
· HRSGs in combined cycle plants with moderate flue gas temperatures
· Heat exchangers in chemical and petrochemical units
· Auxiliary boilers and recovery boilers in pulp and paper industries

Manufacturing Capabilities

Ladhani Metal Corporation produces Half Round Tube Shields for LTSH using CNC rolling and forming machinery to ensure dimensional precision and perfect fitment. Custom sizes, lengths, and thicknesses are available for both short-run and volume-based projects.

Fixing and Installation Options

· Clip-on spring retainer clips for temporary or removable protection
· Tack-welding for permanent high-temperature operation
· Multi-segment coverage for long tubes or wide gas paths

Conclusion

Ladhani Metal Corporation is a trusted Manufacturer, Supplier, and Exporter of Half Round Tube Shields for LTSH Tube, engineered to meet the toughest challenges of modern boiler systems. Our components ensure longevity, operational reliability, and significant maintenance cost savings for power plants and process industries.

For technical inquiries, drawings, or bulk pricing, contact us at info@ladhanimetals.com or visit www.ladhanimetal.com.

PRODUCT LINK :