For specifications,
custom sizes, or quotations, contact us at :
info@ladhanimetals.com or
visit www.ladhanimetal.com.
Introduction
Ladhani Metal Corporation is a trusted manufacturer, supplier, and exporter of
boiler tube protection solutions for high-temperature and high-wear
applications. The Half Round Shield for Boiler Tube is engineered to safeguard
boiler tubes against erosion, slagging, and corrosion caused by flue gases, fly
ash, and abrasive particles. These shields provide reliable protection in
demanding environments such as power plants, refineries, and industrial
boilers.
What is a
Half Round Shield for Boiler Tube?
A Half Round Shield for Boiler Tube is a semi-cylindrical protective cover
fabricated to fit over straight or curved boiler tubes. Acting as a sacrificial
barrier, it absorbs wear and reduces the rate of tube wall thinning. These
shields are widely used in superheaters, economizers, reheaters, and water wall
sections to extend tube service life and maintain efficient boiler operation.
Purpose
and Functionality
The primary purpose of a Half Round Shield for Boiler Tube is to provide a
protective layer that shields boiler tubes from high-temperature flue gas
erosion and abrasive ash deposits. By preventing direct exposure of the tubes
to aggressive environments, these shields minimize tube failure risks, reduce
maintenance frequency, and improve the overall operational reliability of
boilers.
Key
Features
· Manufactured from stainless steels and heat-resistant alloys
· Provides excellent protection against erosion and slagging
· Available in standard and customized dimensions
· Easy to install and replace during maintenance shutdowns
· Suitable for straight tube and bent tube applications
· Enhances boiler efficiency and reduces downtime
Product
Range
|
Product Name |
Description |
|
Half Round Tube Shield |
Standard semi-cylindrical shield for
straight boiler or heat exchanger tubes. |
|
U Type Half Round Tube Shield |
For U-bend tube sections; protects bends
from thermal stress and erosion. |
|
U Type Outer Half Round Tube Shield |
Outer side coverage for U-bends; higher
erosion exposure protection. |
|
U Type Inner Half Round Tube Shield |
Inner curve protection for tight bend
radii; prevents thinning. |
|
Half Round Tube Shield for LTSH Tube |
Tailored for Low Temperature Superheater
tubes prone to corrosion. |
|
Half Round Straight Tube Shield |
Designed for long straight superheater or
water wall tube lengths. |
|
Half Round Tube Shield for R/H Tube |
For high-temperature Reheater Tubes; made
from high-alloy steel grades. |
|
Inner Tube Shield for 90 Degree Bend |
Protects inner radius of 90° bends where
erosion and stress concentration occur. |
|
Outer Tube Shield for 90 Degree Bend |
Shields the outer radius of 90° bends
where high erosion occurs. |
|
Boiler Tube Shields |
General category of protective shields
for boiler tubes in all layouts. |
|
Half Round Shield for Boiler Tube |
Versatile design suitable for both
vertical and horizontal tube arrays. |
|
Power Plant Boiler Tube Shields |
Heavy-duty shields made for large utility
boilers in power generation sectors. |
Material
Grades Offered by Ladhani Metal Corporation
Half Round Shields for Boiler Tubes are manufactured in a wide range of
stainless steels and heat-resistant alloys to withstand extreme conditions.
Available grades include:
· Stainless Steel 304 / 304L
· Stainless Steel 316 / 316L
· Stainless Steel 310 / 310S
· Stainless Steel 410 / 420 / 430
· Cr25Ni20
· 1Cr25Ni20Si2
· Cr23Ni13
· 1Cr20Ni14Si2
· Other special 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
Half Round Shields for Boiler Tubes are widely used in:
· Superheaters and reheaters
· Economizer sections
· Water wall tube banks
· Waste heat recovery boilers
· Biomass and coal-fired boilers
Manufacturing
Capabilities
Ladhani Metal Corporation employs advanced forming, rolling, and welding
processes to manufacture precision-fitted boiler tube shields. Each product is
manufactured in strict compliance with international standards and can be
tailored to customer specifications for radius, thickness, and length.
Fixing
and Installation Options
· Tack-welded for permanent protection
· Clip-on type for easy and removable installation
· Extended and dual-coverage shields available for high-wear zones
Conclusion
Ladhani Metal Corporation is Manufacturer, Supplier and Exporter of Half Round
Shield for Boiler Tube. Our shields are engineered for superior durability and
performance in the toughest boiler environments, ensuring maximum tube
protection and efficient boiler operation.
For technical consultation, custom designs, or
quotations, contact us at info@ladhanimetals.co or visit www.ladhanimetals.com
Product Link :
