Introduction
Ladhani Metal Corporation is a renowned
manufacturer and global supplier of high-performance tube shields engineered to
provide exceptional protection to heat exchanger and boiler tubes. Among our
specialized range of boiler tube protection products, the Half Round Tube Shield stands out for its ability to
resist erosion, corrosion, and damage caused by abrasive flue gases and impact
in thermal and petrochemical plants.
What is a
Half Round Tube Shield?
A Half Round Tube Shield
is a semi-cylindrical protective cover designed to encase the exposed side of
boiler or heat exchanger tubes, especially in areas prone to erosion from gas
flow or ash impact. Typically used in power plants, refineries, and waste
incineration facilities, this component plays a critical role in prolonging
tube life and minimizing downtime due to tube failure.
Purpose
and Functionality
The primary function of a half round tube
shield is to act as a sacrificial layer, absorbing the wear and corrosion that
would otherwise affect the pressure-bearing boiler tubes. These shields can be
quickly replaced during maintenance cycles, thereby reducing long-term
operational costs. By preventing thinning and cracking of tubes, they ensure
better reliability, safety, and efficiency of the system.
Key Features
·
Precision-engineered half round profile for
optimal tube coverage
·
High-temperature and corrosion-resistant
materials
·
Available in multiple grades like SS 304, SS
316, Inconel, and high chrome alloys
·
Accurate fitment using clips or tack welding
·
Designed for easy installation and replacement
·
Suitable for vertical, horizontal, or inclined
tube arrangements
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. |
|
Half Round
Tube Shield for WW Screen Tube |
Used on
water wall screen tubes exposed to flame and slag accumulation. |
|
Inner Tube
Shield for 90 Degree Bend |
Protects
inner radius of 90° bends where erosion and stress concentration occur. |
|
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
We manufacture half round tube shields using a
wide range of industrial-grade materials, tailored to meet diverse
environmental conditions and customer specifications. Some popular grades
include:
·
Stainless Steel 304 / 304L
·
Stainless Steel 316 / 316L
·
SS 310 / 310S
·
Cr25Ni20
·
1Cr25Ni20Si2
·
Cr23Ni13
·
1Cr20Ni14Si2
Each material selection is made considering service temperature, corrosion medium, and mechanical stress environment.
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
1Cr13
• Carbon (C): 0.15 – 0.20%
• Silicon (Si): ≤ 0.60%
• Manganese (Mn): ≤ 0.60%
• Phosphorus (P): ≤ 0.035%
• Sulfur (S): ≤ 0.030%
• Chromium (Cr): 12.0 – 14.0%
• Iron (Fe): Balance
Stainless
Steel 316
• Carbon (C): ≤ 0.08%
• 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 304
• Carbon (C): ≤ 0.08%
• 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 – 10.5%
• Iron (Fe): Balance
Stainless
Steel 310
• Carbon (C): ≤ 0.25%
• 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
Stainless
Steel 316L
• Carbon (C): ≤ 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 304L
• Carbon (C): ≤ 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 310S
• Carbon (C): ≤ 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
Applications
Half round tube shields from Ladhani Metal
Corporation are widely used in:
·
Superheater tubes
·
Economizer tubes
·
Waterwall panels
·
Heat exchanger bundles
·
Waste heat recovery units
·
Industrial boilers
·
Chemical and petrochemical process heaters
Manufacturing
Capabilities
Our advanced manufacturing setup enables us to produce half round shields with precision bending, close tolerances, and consistent surface finishing. Whether it's a small batch or large volume requirement, we can cater to custom lengths, radii, and material specifications.
Fixing and Installation Options
Half round tube shields can be affixed in
several ways:
·
Welded
Type – Tack welding on either side for permanent installation
·
Clip-On
Type – Spring steel or stainless steel clips for quick mounting
·
Wraparound
Type – With integrated clamping mechanisms for vibration-prone areas
Our technical team can provide recommendations
based on tube arrangement and operational conditions.
Advantages
of Ladhani Metal Corporation's Half Round Tube Shields
·
Enhanced tube protection in high-wear zones
·
Reduced boiler downtime and maintenance costs
·
Extended life of pressure components
·
Superior material traceability and quality
assurance
·
Fast production and global delivery capabilities
·
Competitive pricing for bulk requirements
Conclusion
Ladhani Metal Corporation is Manufacturer,
supplier and exporter of Half Round Tube Shield. Ladhani Metal Corporation’s
half round tube shields offer a reliable, cost-effective solution to the
problems of erosion, corrosion, and mechanical wear in high-performance boilers
and heat exchangers. With superior metallurgy, precision manufacturing, and
robust customer support, we ensure that your process remains protected and
efficient.
For detailed quotations or technical consultation, connect with our team at info@ladhanimetals.com or visit www.ladhanimetal.com.
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