DIN 2544 is a German standard for flanges used in piping systems, detailing dimensions, design, and testing methods. Titanium flanges conforming to this standard are designed for use in high-performance environments that demand excellent strength, corrosion resistance, and low weight. Titanium is known for its excellent corrosion resistance, particularly in environments like seawater, chemical processing, and heat exchangers. DIN 2544 titanium flanges are specifically built to withstand aggressive conditions, including high temperatures and corrosive environments, while offering a lightweight alternative to other materials like stainless steel. Key Features of DIN 2544 Titanium Flanges: Material: Titanium flanges are made from titanium alloys, which are highly resistant to corrosion, oxidation, and erosion. Titanium is also known for its strength-to-weight ratio, being strong yet much lighter than many other metals, including stainless steel. Corrosion Resistance: Titanium flanges are ideal for systems exposed to harsh environments, such as saltwater, acids, and chlorides. They are widely used in marine, chemical, and offshore oil and gas applications. Temperature Resistance: Titanium flanges can operate in high-temperature environments, often up to 600°C (1,112°F) without degrading, depending on the specific titanium alloy used. Pressure Rating (PN 25): These flanges are typically rated for PN 25, meaning they can withstand pressures of up to 25 bar (approximately 362 psi) in a variety of applications. Types of DIN 2544 Titanium Flanges: Weld Neck Flanges: These flanges have a long neck that is welded to the pipe. They are ideal for high-pressure systems and applications requiring a strong, reliable connection. Slip-On Flanges: These flanges slide over the pipe and are then welded in place. They are generally used in systems where welding is easier, and the pressures are lower than those of weld neck flanges. Blind Flanges: Used to seal the ends of piping systems, these flanges have no hole in the center. They are often used for isolation and maintenance purposes. Threaded Flanges: These flanges have internal threads that match threaded pipes. They are convenient when welding is not practical or possible. Socket Weld Flanges: These flanges feature a socket where the pipe is inserted and welded into place. These are often used in smaller-diameter piping systems. Titanium Grades for Flanges: Grade 2 Titanium (Commercially Pure Titanium): Properties: Most commonly used grade, offering excellent corrosion resistance and formability. It has moderate strength and is used in a variety of industries like aerospace, chemical processing, and marine applications. Advantages: Excellent corrosion resistance in both seawater and chemical environments. Grade 5 Titanium (Ti-6Al-4V): Properties: An alloy with 6% aluminum and 4% vanadium, offering higher strength than grade 2 titanium, while still maintaining good corrosion resistance. Common in high-stress, high-temperature environments. Advantages: Used in aerospace, medical devices, and high-performance applications due to its superior strength and durability. Pressure Rating (PN 25): PN 25 indicates that the titanium flanges are rated to handle pressures of up to 25 bar (approximately 362 psi). This pressure class is suitable for medium to high-pressure applications, ensuring the flange can endure significant stress in various piping systems. #din2544 #din2544flanges #din2544titaniumflanges

QUALITU STANDARD MATERIAL NO. OLD DESIGNATION DC03 DIN EN 10130 1.0347 St 13-03 The deep drawing grade DC03 is specified according to the standard DIN EN 10130, which focuses on cold-rolled flat products made of soft steels for cold forming. This standard defines the technical requirements and test methods for cold-rolled products used in various industrial applications, particularly where high demands are placed on surface quality and mechanical properties. DC03 is a low-carbon steel characterized by excellent cold formability. The chemical composition of DC03 is precisely defined to ensure that the material has the required mechanical properties. Typically, DC03 contains a maximum of 0.10% carbon, a maximum of 0.45% manganese and traces of phosphorus and sulphur. This small amount of alloying elements contributes to the good formability and weldability of the steel. The mechanical properties of DC03 are also clearly defined. The material has a yield strength of at least 140 MPa and a tensile strength of between 270 and 370 MPa. In addition, DC03 has an elongation at break of at least 34%, which underlines its excellent formability. These properties make DC03 particularly suitable for the production of complex components that require high precision and surface quality, such as body parts in the automotive industry or household appliances. The DIN EN 10130 standard also specifies the tolerances for dimensions, shape and surface finish. These tolerances are crucial to ensure consistently high product quality and to meet the requirements of end users. The surface of the cold-rolled flat products can be supplied in various qualities, from matt to glossy, to meet the specific requirements of different applications. The DIN EN 10152 standard specifies electrolytically galvanized, cold-rolled flat steel products for cold forming, including the deep-drawing grade DC03. This standard defines the requirements for the zinc coating and the basic mechanical properties of the base material. DC03, when electrolytically galvanized in accordance with DIN EN 10152, is given an additional corrosion protection layer of zinc. This layer protects the material from oxidative influences and significantly increases the service life of the components made from it. The zinc coating can be applied in various thicknesses, depending on the specific requirements of the application. Typical coating thicknesses range from 5 to 20 µm. The chemical composition and mechanical properties of the base material DC03 remain unchanged after galvanizing and meet the requirements of DIN EN 10130. DC03 therefore retains its excellent cold formability and mechanical performance. The yield strength, tensile strength and elongation at break also remain in the same range as for ungalvanized DC03. In addition to mechanical performance, the quality of the zinc coating is of central importance. The DIN EN 10152 standard specifies the requirements for the uniformity of the coating, the adhesive strength of the zinc and the surface quality. These requirements ensure that the galvanized products offer high corrosion resistance and an aesthetically pleasing surface. The use of DC03 in accordance with DIN EN 10152 is widespread in the automotive industry, in the construction industry and in the manufacture of household appliances, where improved corrosion resistance is required in addition to high formability. Electrolytic galvanizing offers optimum protection here without impairing the excellent mechanical properties of the base material. In summary, it can be said that the deep-drawing grade DC03 offers a wide range of applications in accordance with both DIN EN 10130 and DIN EN 10152. While DIN EN 10130 focuses on high formability and surface quality, DIN EN 10152 supplements these properties with improved corrosion resistance thanks to the zinc coating. Both standards ensure that DC03 is a reliable and high-quality material for numerous industrial applications. Cold-rolled flat steel DC03, produced in accordance with the DIN EN 10130 and DIN EN 10152 standards, offers a number of advantages for applications in the cold forming process. While DIN EN 10130 defines the basic requirements for chemical composition, mechanical properties and surface quality, DIN EN 10152 extends these specifications to include specific conditions for electrolytically galvanized products that offer additional corrosion protection. Both standards together ensure that DC03 is a versatile material with high quality and durability.

Quality Standard Material No. Old designation DC01 DIN EN 10130 1.0330 ST 12-03 Cold-rolled flat steel DC01, according to the standards DIN EN 10130 and DIN EN 10152 Cold-rolled flat steel DC01 is a widely used material in the industrial sector, which is used for various applications in the cold forming process due to its excellent properties. The standards DIN EN 10130 and DIN EN 10152 are decisive for ensuring the quality and requirements of this material. DC01 according to the DIN EN 10130 standard The DIN EN 10130 standard defines the requirements for cold-rolled flat products made of unalloyed quality steels that are used in the cold forming process. Technical delivery conditions DIN EN 10130 specifies the technical delivery conditions for cold-rolled flat steel. These include the chemical composition, mechanical properties and surface quality. The standard ensures that the products supplied meet the required standards in order to guarantee workability and final quality. Chemical composition The chemical composition of the steel is decisive for its properties and is described in detail in DIN EN 10130. For DC01, the maximum carbon content is 0.12%, while the manganese and phosphorus content is also subject to specific limits. This composition ensures good cold formability and a high surface quality. Mechanical properties DC01 in accordance with DIN EN 10130 has specific mechanical properties that make it ideal for cold forming. These include a minimum tensile strength of 270-410 MPa and a minimum elongation of 28%. These properties allow the steel to be processed into complex shapes without cracking or breaking. Surface quality The surface quality is another aspect of DIN EN 10130. DC01 can be supplied in different surface finishes, such as smooth or matt. These variations allow adaptation to specific requirements of the end application, be it for decorative purposes or further coating processes. DC01+ZE according to the DIN EN 10152 standard The DIN EN 10152 standard extends the requirements of DIN EN 10130 to include specific conditions for electrolytically galvanized products. This standard is crucial for applications in which corrosion protection plays an important role. Technical delivery conditions DIN EN 10152 specifies the technical delivery conditions for electrolytically galvanized, cold-rolled flat products. In addition to the chemical composition and mechanical properties, these conditions also include the specific requirements for the zinc coating. Chemical composition and zinc coating The chemical composition of the base material DC01 generally remains unchanged, but an additional electrolytic zinc coating is applied. This coating is used for corrosion protection and varies in thickness depending on the specific requirements of the application. The standard provides detailed specifications for the thickness and uniformity of the zinc coating to ensure optimum protection. Mechanical properties Even with galvanized products, the mechanical properties of the base material are largely retained. The standard ensures that the cold formability and strength of the steel are not impaired despite the additional coating. Corrosion resistance and surface quality One of the main advantages of products manufactured in accordance with DIN EN 10152 is their improved corrosion resistance. Electrolytic galvanizing protects the steel from rust and thus increases the service life of the end product. The surface quality also plays a decisive role here and can be supplied in various finishes, such as smooth or textured. Conclusion Cold-rolled flat steel DC01, produced in accordance with the DIN EN 10130 and DIN EN 10152 standards, offers a number of advantages for applications in the cold forming process. While DIN EN 10130 defines the basic requirements for chemical composition, mechanical properties and surface quality, DIN EN 10152 extends these specifications to include specific conditions for electrolytically galvanized products that offer additional corrosion protection. Both standards together ensure that DC01 is a versatile material with high quality and durability. FOR EN 10130 DC01 CHEMICAL , MECHANICAL DATA SHEET KINDLY VISIT https://www.ladhanimetal.in/page/en-10130-2006-chemical-and-mechanical-composition/689c322d2e585e299cb43798 https://www.ladhanimetal.in/page/en-10130-cold-rolled-flat-sheet-plate-coil-data-sheet-equivalent-grade-and-chemical-and-mechanical-properties/68a45503fc14472bb274df32

Half Round Tube Shield Half Round Tube Shields by Ladhani Metal Corporation are essential components used to protect heat exchanger tubes, boiler coils, and superheater assemblies from erosion, scaling, slag buildup, and high-temperature corrosion. Designed with a semi-cylindrical profile, they offer easy installation over straight or curved tube surfaces. These shields play a vital role in increasing service life, reducing tube maintenance, and ensuring the efficient operation of thermal systems across power generation, chemical processing, and petrochemical industries. 1Cr25Ni20Si2 U Type Inner Half Round Tube Shield The 1Cr25Ni20Si2 U Type Inner Half Round Tube Shield is fabricated from a high-temperature resistant chromium-nickel-silicon alloy steel. This grade offers excellent resistance to oxidation, sulfur corrosion, and thermal fatigue, even under prolonged exposure to temperatures above 1000°C. The inner U-type configuration is specifically designed to shield the internal curvature of U-bend tubes, a zone vulnerable to accelerated wear caused by flue gas turbulence, slag impact, and thermal cycling. • Inner U Type Half Round Tube Shield – Designed to cover the inside arc of U-bend tubes, offering protection from erosion, scale formation, and heat stress. Ladhani Metal Corporation is a reliable manufacturer, supplier, and exporter of 1Cr25Ni20Si2 U Type Inner Half Round Tube Shields, providing high-performance protective solutions for extreme temperature and chemically aggressive environments. Chemical Composition of 1Cr25Ni20Si2 – High Temperature Alloy Steel • Carbon (C): ≤ 0.20% • Manganese (Mn): ≤ 1.50% • Phosphorus (P): ≤ 0.035% • Sulfur (S): ≤ 0.030% • Silicon (Si): 1.80 – 2.50% • Chromium (Cr): 24.0 – 26.0% • Nickel (Ni): 19.0 – 22.0% • Iron (Fe): Balance Applications: Suited for high-temperature environments with oxidizing, sulfurizing, or carburizing gases. Especially effective in boiler, furnace, and WHRB systems operating under cyclic thermal conditions. Uses • Installed on the inner arc of U-bend tubes in power plant boilers and superheaters exposed to slag and thermal stress • Protects curved tube bends in WHRBs, HRSGs, and reformers subjected to flue gas erosion and oxidation • Applied in heat exchangers and reactors operating in high-temperature and chemically active atmospheres • Used in furnace coils, metallurgical plants, and incinerators for protection from sulfur-laden and high-heat gas streams • Suitable for curved tube coils in petrochemical and process industries where scaling and corrosion are common Features • Excellent oxidation resistance – Performs effectively at continuous service temperatures up to 1100°C • Superior inner arc protection – Covers high-wear zones exposed to heat, slag, and turbulent gas flow • Enhanced thermal fatigue resistance – Designed for use in cyclic heating environments without distortion • Corrosion resistance – Withstands acid gases and sulfur-rich flue gases common in industrial combustion systems • Precision fitment – Fabricated to match specific tube sizes and bend radii for optimal protection and stability • Easy installation – Can be fixed using clamping, tack welding, or banding methods depending on system design Applications • power generation – Shields inner U-bend tubes in superheaters and reheaters from high-temperature erosion • waste heat recovery – Used in WHRBs and HRSGs to protect internal arcs against scaling and oxidation • petrochemical processing – Protects U-bend tubes in reformers and exchangers exposed to acidic gas streams • chemical industry – Ensures long-lasting performance in reactors and thermal processing equipment • metallurgical and furnace systems – Applied where high heat and slag exposure are routine Conclusion The 1Cr25Ni20Si2 U Type Inner Half Round Tube Shield by Ladhani Metal Corporation – manufacturer, supplier, and exporter – provides high-strength, heat-resistant shielding for the internal arcs of U-bend tubes operating in severe industrial environments. Its resistance to oxidation, corrosion, and thermal fatigue makes it a dependable solution for extending equipment life and performance under extreme conditions. For custom sizes, technical support, or pricing inquiries, please contact Ladhani Metal Corporation.

Half Round Tube Shield Half Round Tube Shields by Ladhani Metal Corporation are precision-engineered components designed to protect boiler tubes, superheaters, and heat exchanger coils from erosion, scaling, high-temperature oxidation, and mechanical wear. These shields are widely used in thermal power plants, petrochemical systems, and process industries where tubes are exposed to harsh operating conditions such as high-velocity flue gases, slag, and thermal cycling. Their semi-cylindrical shape allows for easy installation over both straight and curved tube surfaces without system disassembly. SS 410 U Type Inner Half Round Tube Shield The SS 410 U Type Inner Half Round Tube Shield is manufactured from martensitic stainless steel grade 410, which offers good corrosion resistance, excellent wear resistance, and moderate high-temperature strength. The inner U-type design is specifically configured to cover the internal arc of U-bend tubes, an area especially prone to erosion caused by turbulence, thermal gradients, and high-velocity gas impingement. SS 410 provides a hard, durable barrier against mechanical and thermal stress in industrial heat transfer equipment. • Inner U Type Half Round Tube Shield – Protects the internal bend of U-bend tubes from erosion, slag buildup, and high-temperature wear. Ladhani Metal Corporation is a dependable manufacturer, supplier, and exporter of SS 410 U Type Inner Half Round Tube Shields, offering cost-effective and durable protection solutions for critical tube components in high-temperature service environments. Chemical Composition of SS 410 – Martensitic Stainless Steel • Carbon (C): 0.08 – 0.15% • Manganese (Mn): ≤ 1.00% • Phosphorus (P): ≤ 0.040% • Sulfur (S): ≤ 0.030% • Silicon (Si): ≤ 1.00% • Chromium (Cr): 11.5 – 13.5% • Nickel (Ni): ≤ 0.75% • Iron (Fe): Balance Applications: Best suited for moderate to high-temperature environments where abrasion resistance, mechanical strength, and oxidation resistance are important. Uses • Inner arc shielding of U-bend tubes in power plant boilers and superheaters exposed to flue gas turbulence • Protection of return bends in WHRBs and HRSGs where scaling and erosion are common • Applied in curved tube sections in steam reformers, furnaces, and heat exchangers • Ideal for use in chemical, cement, and metallurgical plants with abrasive flue gas and slag exposure • Suitable for systems requiring enhanced wear resistance under cyclic thermal loading Features • Good high-temperature oxidation resistance – Performs well in oxidizing atmospheres up to 650°C • Inner bend protection – Focused coverage for the area most affected by turbulent gas flow and erosion • Wear resistance – Offers excellent surface hardness and mechanical strength for long-term use • Secure fit – Custom-manufactured to match the tube’s radius and diameter for effective shielding • Quick installation – Can be fixed using clamp-on, banding, or welding techniques depending on system requirements • Cost-effective performance – Provides a durable and affordable solution for erosion and heat protection Applications • thermal power plants – Shields inner U-bends in boiler and superheater sections from erosion and slag impact • waste heat recovery systems – Used in WHRBs and HRSGs to protect internal tube arcs from scale and corrosion • petrochemical facilities – Installed in curved tube coils and return bends exposed to acidic and abrasive gas streams • industrial furnaces and reformers – Suitable for inner arc coverage in high-temperature gas flow zones • cement and chemical plants – Defends against mechanical wear and heat stress in return tube bends Conclusion The SS 410 U Type Inner Half Round Tube Shield by Ladhani Metal Corporation – manufacturer, supplier, and exporter – is a durable and cost-efficient solution for shielding the inner arc of U-bend tubes in thermally and mechanically demanding environments. Its martensitic structure and wear-resistant properties make it a reliable choice for protecting tube surfaces from erosion, scaling, and heat-induced damage in power and process applications. For custom orders, technical support, or quotations, please contact Ladhani Metal Corporation.

Half Round Tube Shield Half Round Tube Shields by Ladhani Metal Corporation are engineered to provide robust protection for boiler, superheater, and heat exchanger tubes against high-temperature erosion, slag deposition, scaling, and corrosive gas exposure. These shields are essential in power plants, petrochemical systems, and high-heat industrial environments where tubes are vulnerable to rapid degradation due to thermal cycling and particulate flow. The half-round design ensures quick installation over curved or straight tube sections without system disassembly. U Type Inner Half Round Tube Shield The U Type Inner Half Round Tube Shield is specially designed to protect the inner curvature of U-bend tubes, which often experiences high levels of turbulence, localized corrosion, and scaling due to gas redirection and mechanical stress. Inner shields are commonly paired with outer shields for full bend protection and are manufactured in a wide range of stainless steel and high-temperature alloy grades, customized to specific environmental and system requirements. Ladhani Metal Corporation is a trusted manufacturer, supplier, and exporter of U Type Inner Half Round Tube Shields in various material grades, offering tailored protection solutions for high-temperature and corrosive conditions across multiple industries. Available Grades • SS 304 – General-use stainless steel with good corrosion and heat resistance • SS 304L – Low-carbon version for improved weldability and reduced carbide precipitation • SS 316 – Molybdenum-added alloy with excellent resistance to pitting and chlorides • SS 316L – Low-carbon alternative for superior corrosion resistance in welded environments • SS 310 – Austenitic high-temperature steel with excellent oxidation resistance • SS 310S – Low-carbon SS 310 for better thermal fatigue performance • SS 410 – Martensitic stainless steel with good strength and abrasion resistance • SS 420 – High-hardness martensitic grade ideal for erosion-prone zones • SS 430 – Ferritic grade for moderate corrosion and oxidation resistance • 1Cr13 – Martensitic stainless steel offering mechanical protection and heat resistance • 1Cr18Ni9Ti – Titanium-stabilized grade offering resistance to intergranular corrosion • Cr23Ni13 – High-temperature alloy with excellent oxidation and scaling resistance • Cr25Ni20 – High-performance grade for extreme thermal and oxidizing conditions • 1Cr25Ni20Si2 – Heat-resistant alloy with silicon for improved scale resistance • 1Cr20Ni14Si2 – Alloy for thermal fatigue protection and oxidizing environments Applications • Inner arc protection in U-bend tubes of boilers, superheaters, and reheaters • Shielding internal curves of tubes in waste heat recovery boilers (WHRBs) and HRSGs • Corrosion and scale defense for inner tube arcs in petrochemical and steam reforming units • Inner surface protection in furnace coils, reformers, and incinerators • Installed in chemical plants and thermal systems prone to turbulent flue gas exposure Features • Focused inner arc protection – Guards the most corrosion- and scale-prone surface of U-bend tubes • Material flexibility – Available in multiple grades for varied thermal, mechanical, and chemical requirements • Excellent thermal resistance – Withstands extreme temperatures depending on material (up to 1150°C+) • Precise fit – Custom-fabricated to match exact tube dimensions and bend radii • Simple installation – Mounted using clamps, stainless bands, or welding techniques • Dual-shield pairing – Can be combined with outer shields for complete U-bend coverage • Long-lasting performance – Enhances tube reliability and reduces maintenance in high-wear zones Applications • power generation – Protects U-bend inner surfaces in superheaters and economizers from flue gas turbulence • petrochemical plants – Shields inside arcs in reformers and heaters exposed to chlorides and acidic gases • waste heat systems – Installed in HRSGs and WHRBs to prevent slag and oxidation on internal bends • chemical industries – Suitable for reactors and high-temperature exchangers handling corrosive media • cement and metallurgy – Used in systems exposed to flame, dust, and oxidizing atmospheres Conclusion The U Type Inner Half Round Tube Shield by Ladhani Metal Corporation – manufacturer, supplier, and exporter – is a precision-engineered solution for protecting the inner arc of U-bend tubes against corrosion, scale formation, and thermal damage. Available in a wide range of stainless steels and high-temperature alloys, these shields provide durable, customizable, and easy-to-install protection for critical components in power, chemical, and thermal processing systems. For custom sizes, technical assistance, or quotations, please contact Ladhani Metal Corporation.

Half Round Tube Shield Half Round Tube Shields by Ladhani Metal Corporation are essential components engineered to protect boiler, superheater, reheater, and heat exchanger tubes from high-temperature damage, erosion, slag buildup, and corrosion. These shields are commonly used in thermal power plants, petrochemical systems, waste heat recovery units, and high-temperature industrial processes where curved tube sections are frequently exposed to hot flue gases and particulate-laden flow. The half-round shape ensures quick installation and effective protection without dismantling the tube system. U Type Outer Half Round Tube Shield The U type outer half round tube shield is specifically designed to cover and protect the outer arc of U-bend tubes — the area most vulnerable to heat, gas erosion, flame impingement, and slag accumulation. These shields are manufactured in a wide variety of stainless steel and heat-resistant alloy grades to meet specific temperature, corrosion, and wear resistance requirements across various industries. Ladhani Metal Corporation is a leading manufacturer, supplier, and exporter of U type outer half round tube shields in a full range of grades, offering precise fitment, durability, and reliable protection for curved tubes operating in extreme service environments. Available Grades • SS 304 – General-purpose stainless steel with good resistance to oxidation and moderate corrosion • SS 304L – Low-carbon version of SS 304 for better weldability and intergranular corrosion resistance • SS 316 – Molybdenum-enhanced alloy for superior resistance to chloride pitting and chemical corrosion • SS 316L – Low-carbon variant of SS 316 for enhanced corrosion resistance in welded conditions • SS 310 – High-temperature austenitic stainless steel with excellent oxidation resistance • SS 310S – Low-carbon SS 310 version suitable for thermal cycling and stress-resistance • SS 410 – Martensitic stainless steel with good mechanical strength and wear resistance • SS 420 – High-hardness martensitic steel for erosion-prone environments • SS 430 – Ferritic stainless steel suitable for mild oxidizing conditions and cost-effective applications • 1Cr13 – Martensitic stainless steel ideal for mechanical protection and moderate corrosion resistance • 1Cr18Ni9Ti – Titanium-stabilized alloy resistant to intergranular corrosion and heat stress • Cr23Ni13 – Austenitic heat-resistant alloy with excellent scaling and oxidation resistance • Cr25Ni20 – High-alloy grade for extreme heat and corrosive gas exposure • 1Cr25Ni20Si2 – Silicon-enhanced alloy for high-temperature stability and anti-scaling performance • 1Cr20Ni14Si2 – High-temperature grade with superior thermal fatigue and oxidation resistance Applications • Protection of U-bend outer arcs in superheaters and reheaters of thermal power plants • Shielding of curved tube sections in waste heat recovery boilers (WHRBs) and HRSGs • Flame-side defense for tube bends in petrochemical heaters, steam reformers, and exchangers • Slag and soot protection in return bends of industrial furnaces, incinerators, and kilns • Coverage for U-bend tubes in chemical and refinery plants exposed to acidic or oxidizing gases Features • Full outer arc coverage – Shields the most heat-exposed and erosion-prone section of U-bend tubes • Grade versatility – Available in multiple material options for specific temperature and corrosion demands • Excellent heat and oxidation resistance – Performance stability in conditions up to 1100°C+ depending on grade • Precision fitment – Custom-manufactured to match tube diameter, radius, and system design • Easy to install – Mountable via stainless steel bands, clamps, or tack welds without disassembly • Long-lasting durability – Reduces frequency of tube failure, improving system efficiency and safety Conclusion The U Type Outer Half Round Tube Shield by Ladhani Metal Corporation—manufacturer, supplier, and exporter—is available in a complete range of stainless steel and heat-resistant alloy grades to suit any industrial application. These shields provide robust, reliable protection for the outer arc of U-bend tubes exposed to high temperatures, corrosive gases, and erosive flows. With grade-specific performance, precision fabrication, and simple installation, they are a proven solution for extending tube service life in critical systems. For technical support, customized dimensions, or quotations, please contact Ladhani Metal Corporation.

Half Round Tube Shield Half Round Tube Shields by Ladhani Metal Corporation are purpose-built components designed to extend the life of boiler, heat exchanger, and process tubes by offering robust protection from erosion, scaling, and thermal impact. These shields are essential for maintaining system performance and reducing unscheduled downtime in industries that operate under demanding thermal and mechanical conditions. SS 420 Half Round Tube Shield The SS 420 Half Round Tube Shield is a semi-cylindrical protector fabricated from martensitic stainless steel grade 420. Known for its high hardness, wear resistance, and moderate corrosion resistance, SS 420 is ideally suited for applications where abrasion and mechanical stress are predominant concerns. The half-round configuration ensures a secure fit over existing tubes, creating a physical barrier against direct exposure to high-velocity gases, fly ash, and thermal shocks. Its ability to retain strength at elevated temperatures makes it suitable for use in utility boilers, air preheaters, and other high-wear process systems. Chemical Composition of SS 420 – Martensitic Stainless Steel • Carbon (C): 0.15 – 0.40% • Manganese (Mn): ≤ 1.00% • Phosphorus (P): ≤ 0.040% • Sulfur (S): ≤ 0.030% • Silicon (Si): ≤ 1.00% • Chromium (Cr): 12.0 – 14.0% • Nickel (Ni): ≤ 0.75% • Iron (Fe): Balance Uses • Boiler Tube Protection – Provides abrasion resistance in flue gas paths, soot blower zones, and areas exposed to particulate erosion in industrial boilers. • Heat Exchanger Shielding – Minimizes mechanical damage caused by turbulent flow and particulate-laden fluids, preserving heat transfer efficiency. • Furnace Tube Guarding – Protects furnace and kiln tubes from thermal scale buildup and flame impingement in harsh operating zones. • Steam and Condensate Systems – Shields tubes from vibration, pressure cycling, and moderate steam-induced corrosion. • Ash and Gas Flow Zones – Ideal for protecting tubes in areas of fly ash impact or high-speed combustion gas flow in WTE and biomass plants. Features • High Surface Hardness – Excellent resistance to surface wear, impact, and mechanical abrasion due to its high carbon and martensitic structure. • Moderate Corrosion Resistance – Withstands oxidizing and mildly corrosive conditions up to 650°C, suitable for moderate industrial atmospheres. • Structural Integrity – Maintains strength under pressure and temperature cycling, offering long service life in mechanical protection roles. • Easy Installation – The half-round design enables fast application in the field with minimal disruption to tube layout or operation. • Finishing Options – Available in bright annealed, pickled, or passivated surfaces depending on operational requirements. • Custom Built – Offered in varied lengths, diameters, thicknesses, and attachment styles (clamp-on or weld-on) to match specific installations. Applications • Thermal and Biomass Power Stations – Used to protect boiler tubes from ash erosion and gas turbulence in high-velocity flue paths. • Cement and Steel Industries – Shields kiln and heat recovery tubes from particulate impact, slag, and high-temperature dust environments. • Waste-to-Energy Plants – Guards tubes in combustion chambers and economizers where gas stream erosion and soot buildup are persistent issues. • Oil Refineries – Applied in heat exchangers and preheater tubes exposed to abrasive flow or moderate corrosion risk. • Pulp and Paper Mills – Used in black liquor recovery boilers and steam generators handling fibrous or corrosive waste products. • Air Preheaters – Ideal for tubes located in dust-laden environments requiring protection against wear and gas abrasion. Conclusion The SS 420 Half Round Tube Shield from Ladhani Metal Corporation offers a high-performance, wear-resistant solution for tube protection in mechanically aggressive and thermally intensive environments. Its martensitic structure provides outstanding surface hardness, making it especially effective in soot blower zones, high-velocity ducts, and areas subject to abrasive particle flow. While not intended for severe chemical environments, SS 420 delivers exceptional value where mechanical durability is the top priority. With full customization options and precision manufacturing, Ladhani Metal Corporation ensures durable, reliable shielding products tailored to your plant’s exact operational needs. For technical consultations, order customization, or to request a quotation, please contact Ladhani Metal Corporation.

DIN 2543 flanges are designed to meet the DIN (Deutsches Institut für Normung) standard, and duplex flanges refer to flanges made from duplex stainless steel alloys. Duplex stainless steel is a hybrid material, combining both austenitic and ferritic microstructures. This gives duplex steels a unique combination of strength and corrosion resistance that is superior to regular stainless steel. Material: Typically made from Duplex Stainless Steel grades such as 2205 or 2507. Pressure Rating (PN16): Rated for 16 bar (approx. 232 psi) at 20°C (68°F), making them suitable for medium-pressure applications. Key Features of DIN 2543 Duplex Flanges: Corrosion Resistance: Duplex stainless steel offers superior resistance to corrosion in aggressive environments, such as in chloride, sulfuric acid, and seawater. This makes it ideal for marine, chemical, and industrial environments. Strength: Duplex steels combine the strength of ferritic steel with the corrosion resistance of austenitic steel, offering higher strength than regular stainless steel while maintaining good toughness. Durability: Excellent resistance to pitting and crevice corrosion, ensuring long-term durability in harsh conditions. Weldability: While duplex flanges are weldable, the welding process must be carefully controlled to prevent issues like sensitization or intermetallic phases. Types of Duplex Flanges (DIN 2543): Weld Neck Flanges (WN): These flanges have a tapered neck for welding directly to pipes, providing extra strength and durability in high-pressure applications. Slip-On Flanges (SO): These are easy to install and are placed over the pipe, then welded inside and outside. Blind Flanges (BL): Used to close the end of a pipe or system, preventing fluid flow. Socket Weld Flanges (SW): These flanges have a socket into which the pipe is inserted and then welded, commonly used for small-bore systems. Lap Joint Flanges (LJ): These are paired with a lap joint stub end and allow for easy alignment and disassembly. Common Duplex Stainless Steel Grades for Flanges: Grade 2205: Composition: Contains approximately 22% chromium, 5% nickel, and 3% molybdenum. Properties: Excellent corrosion resistance, especially to pitting and crevice corrosion. High strength and good weldability. Applications: Used in chemical, petrochemical, and marine applications. Grade 2507 (Super Duplex): Composition: Contains 25% chromium, 7% nickel, and 4% molybdenum. Properties: Superior corrosion resistance and strength compared to 2205. Ideal for extremely aggressive environments. Applications: Used in seawater, desalination plants, and high-pressure industrial applications. Pressure Rating (PN16): PN16 refers to the pressure rating of 16 bar (or approximately 232 psi) at 20°C (68°F). Applications: Duplex flanges with a PN16 rating are suitable for medium-pressure systems in industries such as chemical processing, oil & gas, water treatment, and marine environments. Conclusion: DIN 2543 Duplex flanges are a reliable solution for medium-pressure applications (PN16) requiring high strength and exceptional resistance to corrosion.