The DIN 2558 Duplex Flange PN 6 is a high-quality, precision-engineered piping component designed to deliver exceptional mechanical strength and corrosion resistance in harsh industrial environments. Manufactured to DIN (Deutsches Institut für Normung) standards, these flanges are produced using premium duplex stainless steels, which combine the benefits of both austenitic and ferritic stainless steels. Ladhani Metal Corporation supplies these flanges with a strong focus on durability, reliability, and performance under challenging operating conditions. Duplex flanges are widely used in industries such as oil and gas, petrochemical, marine, desalination, pulp and paper, and chemical processing—where resistance to stress corrosion cracking, pitting, and crevice corrosion is essential. The PN 6 pressure rating (6 bar or approximately 87 psi) makes these flanges suitable for medium-pressure systems that demand both structural integrity and long service life. Types: Weld Neck Flange – Provides a robust, welded connection ideal for high-stress, high-temperature applications. Slip-On Flange – Offers ease of installation and is welded on both the inner and outer surfaces for a secure fit. Blind Flange – Used to close the end of a pipe system, ensuring leak-tight sealing. Threaded Flange – Allows for easy, non-welded connection to piping systems with threaded ends. Socket Weld Flange – Ideal for smaller-diameter high-pressure lines, offering smooth flow and strong connections. Grades & Chemical Composition: Duplex 2205 (UNS S31803/S32205): Chromium (Cr): 21.0 – 23.0% Nickel (Ni): 4.5 – 6.5% Molybdenum (Mo): 2.5 – 3.5% Manganese (Mn): ≤ 2.0% Silicon (Si): ≤ 1.0% Nitrogen (N): 0.14 – 0.20% Carbon (C): ≤ 0.03% Iron (Fe): Balance Key Features: Excellent resistance to pitting, crevice corrosion, and chloride-induced stress corrosion cracking. Superior strength compared to standard stainless steels PN 6 Rating: The PN 6 rating signifies a nominal pressure capacity of 6 bar (approximately 87 psi), making these flanges suitable for medium-pressure applications in both industrial and marine systems where enhanced corrosion resistance and mechanical strength are required. Features: Corrosion Resistance: Excellent resistance to a wide range of corrosive environments, especially chlorides and sulfides. High Strength: Duplex steel offers nearly twice the strength of conventional austenitic stainless steel, reducing wall thickness and weight. Stress Corrosion Resistance: Ideal for applications involving aggressive media and fluctuating temperatures. Longevity: Designed to offer extended service life with minimal maintenance in severe environments. Versatile Use: Applicable in offshore platforms, chemical plants, desalination systems, and high-performance piping networks . Cost-Efficient: Combines strength and corrosion resistance, often allowing for reduced material thickness and overall system weight. Ladhani Metal Corporation ensures that each DIN 2558 Duplex Flange is precision-machined and rigorously tested to meet or exceed international standards. These flanges offer a reliable, leak-proof solution for critical piping systems, balancing performance, safety, and long-term value.

DIN 2527 SS 321 Blind Flanges are specialized components used in industrial piping systems to close off the ends of pipes or equipment where no further connection is necessary. A blind flange is a solid, flat disc without a central bore, specifically designed to seal the open end of a pipe or a vessel. The DIN 2527 standard, developed by the German Institute for Standardization, defines the specifications for these flanges, ensuring that they meet high standards for dimensional accuracy, pressure tolerance, and mechanical strength. The SS 321 material, used for the production of these blind flanges, is an austenitic stainless steel known for its excellent resistance to high-temperature oxidation, corrosion, and scaling. The addition of titanium to this steel stabilizes its structure, making it suitable for environments where temperatures fluctuate or are consistently high. As a result, SS 321 blind flanges are frequently used in industries where both strength and resistance to harsh environmental conditions are paramount, including the chemical, petrochemical, aerospace, and power generation industries. By utilizing DIN 2527 SS 321 Blind Flanges, companies can ensure secure, long-lasting, and efficient closures for piping systems under challenging operational conditions. These flanges are essential in maintaining the integrity of systems exposed to elevated pressures and corrosive substances, ensuring the safe containment of fluids and gases. key Features of DIN 2527 SS 321 Blind Flanges: Material Composition of SS 321: Carbon (C): ≤ 0.08% Chromium (Cr): 17.0 - 19.0% Nickel (Ni): 9.0 - 12.0% Titanium (Ti): 5 times the carbon content, generally around 0.60% minimum, to prevent carbide precipitation. Manganese (Mn): 2.00% max Silicon (Si): 1.00% max Phosphorus (P): 0.045% max Sulfur (S): 0.030% max Pressure and Temperature Resistance: Operating Temperature: SS 321 can perform well in high-temperature environments, up to 900°C (1650°F) intermittently and up to around 700°C (1292°F) for continuous service. Design and Dimensions of DIN 2527 Blind Flanges: Pressure Ratings: The design of a DIN 2527 blind flange is primarily based on pressure class ratings (such as PN6, PN10, PN16, etc.), which denote the maximum pressure the flange can safely withstand. Bolt Holes: The number and size of bolt holes for DIN 2527 blind flanges are specified according to the flange's pressure class and size. The bolt pattern is designed to ensure a tight seal and accommodate appropriate bolt sizes for a given pressure class. Thickness: The thickness of a blind flange can vary depending on the pressure rating and size, with thicker flanges being required for higher pressure applications. Nominal Diameter: Blind flanges are available in various nominal pipe diameters (DN) ranging from DN10 (1/2 inch) up to DN600 (24 inches) or more. Types of DIN 2527 SS 321 Blind Flanges: Standard Blind Flange (Type A): A solid, circular flange used to seal the end of a pipe or vessel. Common for general applications. Flat-Faced Blind Flange: Has a flat sealing surface, ideal for low-pressure systems and tight sealing. Raised Face Blind Flange: Features a raised surface around the center for better sealing in higher pressure systems. Ring-Type Joint (RTJ) Blind Flange: Has a groove for an RTJ gasket, designed for high-pressure applications, often used in the oil and gas industry. Long Weld Neck Blind Flange: Has an extended neck for welding, providing additional strength and used in high-pressure or stressed systems.

A DIN 2527 AISI 4140 blind flange is a specialized type of blind flange made from AISI 4140 alloy steel, adhering to the DIN 2527 German standard. Blind flanges are crucial components in piping systems, used to seal the end of a pipe, vessel, or valve to isolate it or stop the flow of fluids. The AISI 4140 material used for this specific flange is a high-strength alloy steel known for its robustness and excellent mechanical properties, making it ideal for high-stress applications. AISI 4140, a chromium-molybdenum alloy steel, is renowned for its excellent mechanical properties, including high tensile strength, hardness, and resistance to wear. It is often used in heavy-duty applications such as in the automotive, aerospace, and oil & gas industries, where the need for robust materials is crucial. The use of AISI 4140 steel in a DIN 2527 blind flange ensures that the flange can handle high pressures, temperatures, and mechanical stresses without compromising on performance or safety. Material: AISI 4140 Alloy Steel Composition: AISI 4140 is a medium-carbon steel alloy that contains chromium (Cr) and molybdenum (Mo) as its primary alloying elements. These elements improve the steel's hardness, strength, and wear resistance. Key Properties: Strength: High tensile strength and yield strength, making it capable of withstanding high loads and stress in high-pressure applications. Toughness: Offers excellent toughness and impact resistance, making it suitable for challenging environments where forces are dynamic. Hardness: Can be heat-treated to achieve high hardness levels, providing resistance to wear and abrasion. Corrosion Resistance: While AISI 4140 is not as corrosion-resistant as stainless steel, it can still perform well in less corrosive environments with proper surface treatment (e.g., coatings or galvanizing). Design and Dimensions (DIN 2527) Shape: The blind flange is a flat, circular plate with no central hole. Its purpose is to seal the end of a pipe or vessel, effectively "closing" the pipeline or system. Bolt Holes: The flange has evenly spaced bolt holes around the perimeter, allowing it to be bolted securely to the corresponding flange or fitting in the system. These holes align with the bolt pattern of other components. Thickness: The flange thickness varies depending on the size, pressure class, and specific application requirements. It is designed to withstand internal pressure while providing a reliable seal. Pressure Rating: Flanges are typically rated according to pressure classes such as PN 6, PN 10, PN 16, PN 25, etc., indicating the maximum pressure the flange can safely handle without failure. Applications Pipeline Sealing: The primary function of a blind flange is to seal the open end of a pipeline, preventing the passage of fluids, gases, or other materials through the system. System Isolation: Blind flanges are used to isolate a section of the system for maintenance or repairs, allowing for safe disconnection of parts while maintaining system integrity. Pressure Containment: AISI 4140 blind flanges are also used in applications where maintaining pressure within a system is critical. The high strength and durability of AISI 4140 make it suitable for use in high-pressure environments. Types of Blind Flanges in DIN 2527 Raised Face (RF): The flange surface has a small raised area around the bolt circle to improve sealing when mated with a gasket. Flat Face (FF): The flange surface is level with the flange body, typically used with softer gaskets to create a seal. Ring Type Joint (RTJ): The flange may feature a groove to accommodate a metal ring gasket for high-pressure applications, providing a secure, reliable seal.

Product name:Titanium sheet metal Unit price:$14-$36.9/kg Material: Titanium grade 1 grade 2 grade 3 grade 4 Grade 5 (Ti6al4v),grade 7,grade 12 etc. Standard: ASTM/ASME B265 AMS 4911 ASTM F136 ASTM F67 etc. Demension: Thickness*1000*2000mm Thickness*3000*6000mm (Standard size); Thickness: 0.5mm; 0.8mm; 1.0mm; 1.2mm; 1.5mm; 2.0mm; 3.0mm; 4.0mm ......40mm etc br>Technique : Rolled Status: Annealed(M) Titanium has many obviously superior characteristics: small density (4.5kg/m3), high melting point (1660℃), strong corrosion resistance, high specific strength, good plasticity, but also through alloying and heat treatment methods to produce a variety of alloys with high mechanical properties, is an ideal aerospace engineering structural materials. Titanium sheet metal are commonly used in today's manufacturing industry, and the most commonly used grades are 2 and 5. Grade 2 titanium Grade 2 is commercial pure titanium used in most chemical processing plants and can be cold formed. Ultimate tensile strength of grade 2 plates and sheets up to 40,000 psi and above. Grade 5 titanium Class 5 is an aerospace class that does not allow cold molding and is therefore used more often when molding is not required. Grade 5 aerospace alloys have ultimate tensile strength of 120,000 psi and above. Usually the purpose of using Titanium sheet metal is to really approximate the final size of the part being manufactured. The material is processed to the nearest size of the required parts and the grain structure of the finished product is more uniform. Titanium plates are often used as insulation because titanium prevents heat from being transferred to the rest of the assembly. The titanium plate and titanium plate are bulletproof and provide good protection for the driver during the race. Application example: in addition to the use of industrial pure titanium manufacturing parts, a large number of titanium alloy is used. It is increasingly widely used in aerospace, aerospace, chemical, shipbuilding and other industrial sectors, manufacturing gas turbine components, the production of prosthetic devices and other biological materials

Material: Gr1, Gr2, Gr5, Gr7, Gr12 etc. OD: 150-2500mm Thickness: 30-250mm Production Methods: Forging,annealing and machining Packing: Plywood box Titanium Tubesheet for Heat Exchanger Product Information Tubesheet is a circular plate drilled with holes of the same diameter as the pipe. It is used for the heat exchanger to fix the pipe. An accessory that accomplishes this by passing a pipe through and welding it in place. The precision of tubesheet processing, especially the tolerance of tube hole spacing and diameter, verticality and finish, have a great impact on the assembly and performance of the above-mentioned chemical equipment. With the enlargement of chemical equipment and power stations, the diameter of tubesheets has become larger and larger. Tubesheet with a diameter of 4m-5m is very common. The characteristics of large tubesheet are many tube holes, compactness, small hole diameter, deepness, high precision, and high finish requirements.

Product name: 19mm Titanium pipe for heat exchanger Standard:ASTM B338 Material:Grade 1 Grade 2 titanium Diameter:19.1mm Wall thickness:1.0mm / 1.2mm Length:Max 16000mm Surface:Pickling surface/Polished Type:Seamless, welded Application:Heat Exchanger, chemical industry etc. Technique:Rolled 19mm Titanium pipe for heat exchanger Commonly used heat exchange tube size (outer diameter x wall thickness) is mainly φ 19mmx2mm, φ 25mmx2mm.5mm and φ 38mmX2mm.5mm seamless tube and φ 25mmx2mm and φ 38mmx2mm.5mm seamless tube. Standard tube length includes 1.5, 2.0, 3.0, 4.5, 6.0, 9.0m, etc. The use of small diameter can increase the heat transfer area per unit volume, compact structure, reduce metal consumption, improve the heat transfer coefficient. It is expected that the heat exchange tube of the same diameter heat exchanger is changed from φ 25mm to φ 19mm, the heat exchange area can be increased by about 40%, saving more than 20% of metal.

Material: Gr1, Gr2, Gr5, Gr7, Gr12 etc. OD: 150-2500mm Thickness: 30-250mm Production Methods: Forging,annealing and machining Packing: Plywood box Gr1 Titanium Tubesheet Product Description The precision of titanium tubesheet processing, especially the tube hole spacing and tube diameter tolerance, verticality, and smoothness greatly affect the assembly and use performance of the chemical equipment listed above. With the enlargement of chemical equipment and power stations, titanium tubesheet diameter has become larger and larger, and titanium tubesheets with a diameter of 4m-5m are very common. The characteristics of the large-scale tubesheet are the large number of tube holes, denseness, small diameter, deepness, high precision and smoothness requirements

Product Name: Titanium Pipe Standard: ASTM B338 Material: Gr1, Gr2 Unit Price: $25usd/kg-$40usd/kg Type: Welded/Seamless Shape: Round Outer Diameter: 9.52mm/12.7mm/15.9mm/19mm/21.7mm/25.4mm/32mm/33.4mm/38mm/45mm etc. Wall Thickness: 0.5-3.0mm Length: Max 12000mm Surface: Bright Features of Gr1 titanium pipe: 1. Gr1 titanium pipe has plasticity. The elongation rate of the high-purity titanium pipe can reach 50-60%, and the reduction of area can reach 70-80%. Although the strength of high-purity titanium pipe is low, the pure industrial titanium contains a small amount of impurities and the addition of alloying elements can significantly strengthen its mechanical properties, making its strength comparable to high strength. This means that as long as the industrial pure titanium pipe contains a small amount of interstitial impurities and other metal impurities, it can make it have both high strength and appropriate plasticity. 2. The specific strength (strength to weight ratio) of industrial pure titanium pipe is very high in metal structural materials. Its strength is equivalent to steel, but its weight is only 57% of steel. 3. Gr1 titanium pipe has strong heat resistance, and can still maintain good strength and stability in the atmosphere at 500°C. 4. Titanium pipe also has good low temperature resistance. Even at the ultra-low temperature of -250℃, it still has high impact strength and can withstand high pressure and vibration. 5. Strong corrosion resistance, this is because it has a particularly large affinity for oxygen, and can form a dense oxide film on its surface, which can protect titanium from corrosion by the medium. Therefore, titanium has good stability in acidic, alkaline, neutral salt solutions and oxidizing media, and has better corrosion resistance than existing stainless steel and other non-ferrous metals. Chemical Composition (Wt%) ASTMNo. Femax O max Nmax Cmax Hmax Pd Al Bal Grade1 0.2 0.18 0.03 0.1 0.015 - - Ti Physical Properties(Min) ASTMGrade AlloyComposition TensileStrength YieldStrength Elongation min % ksi Mpa ksi Mpa Grade 1 UnalloyedTi("Pure")35A-CP1 35 240 20 138 24

Porduct name : Titanium clad stainless steel tube sheet Material: Titanium +steel,Titanium+stainless steel etc. Size &Standard: As per client drawing Production Method: Forging,annealing and machining Advantage: Excellent corrosion resistance ability Packing: Plywood case Application: Heat Exchanger, chemical equipment, Pressure Vessel, filter devices, etc. Titanium clad stainless steel tube sheet Titanium composite steel plate tube-sheet is a single or double-sided composite plate made of ordinary grade TA1 or TA2 (composite metal) and carbon steel or alloy steel by explosion, explosion + rolling or hot rolling. Titanium metal has excellent corrosion resistance, widely used in flue gas desulfurization equipment, power plant chimneys, chemical reactors, heat exchangers, pressure vessels, etc. But its disadvantage is high cost, titanium composite steel plate tubesheet has the corrosion resistance of titanium metal and the structural strength of steel, can greatly reduce the project cost. At present, the production method of titanium composite steel tubesheet is as follows: 1. Weld compound 2. Rolling compound 3. Explosive welding 4. Explosive welding + rolling Baoji Lihua uses explosive welding and rolling and combines the two processes. This method can overcome the disadvantages of small area and complex rolling process of explosive composite plate, give full play to their respective advantages, and produce titanium steel composite plate with large area and small thickness. It is more efficient and cheaper. Technological parameters and shear strength of explosive welding of Titanium clad stainless steel plate tube sheet 1 Cladding materials Base materials h0/ mm Wg/ (g.cm-2) Bond strength/MPa 1 2 3 4 Average Remark Metal δ1/ mm Metal δ2/ mm Titanium 3 5 Stainless steel 18 5 6.5 1.4 1.6 σt 293 200 392 179 266 The substrate is generally polished. σf 247 208 113 92 165 σt 447 530 460 441 444 The substrate is polished. σf 403 200 363 322 σt 139 105 203 205 163 The substrate is generally polished. σf 231 345 286 287 285 σt 407 410 263 407 372 The substrate is polished. σf 498 571 513 527 Losive welding of Titanium clad stainless steel plate tube sheet 2 Cladding materials Base materials h0/ mm Wg/ (g.cm-2) Bond strength/MPa 1 2 3 4 Average Remark Metal δ1/ mm Metal δ2/ mm Titanium 3 5 Stainless steel 18 5 6.5 1.4 1.6 σt 392 87 240 18 The substrate is generally polished. σf 345 92 157 12 σt 530 279 402 5 The substrate is polished. σf 403 200 321 3 σt 339 60 230 18 The substrate is generally polished. σf 287 149 233 11 σt 571 513 541 2 The substrate is polished.