PN 10 DIN 2501 Titanium Plate Flange Gr2 Gr7 for High Pressure Pipelines

2. Grades of DIN 2501 Titanium Plate Flange

1. Commercially Pure Titanium:

   • Grade 2 (UNS R50400): This is the most widely used grade of titanium due to its excellent corrosion resistance, formability, and weldability. It is suitable for a wide range of industrial applications where moderate strength and good corrosion resistance are required.

2. Titanium Alloys:

   • Grade 5 (Ti-6Al-4V, UNS R56400): This is the most commonly used titanium alloy, known for its high strength, lightweight properties, and excellent corrosion resistance. It is used in aerospace, marine, and chemical processing industries.
   • Grade 7 (UNS R52400): Known for its excellent weldability and corrosion resistance in reducing and mildly oxidizing environments, Grade 7 titanium is often used in chemical processing equipment.
   • Grade 12 (UNS R53400): This titanium alloy offers excellent corrosion resistance in highly oxidizing environments and is well-suited for chemical processing and marine applications.
   • Grade 23 (Ti-6Al-4V ELI, UNS R56401): Similar to Grade 5, but with extra low interstitial (ELI) content, Grade 23 titanium alloy is used in medical and aerospace applications where biocompatibility and high strength are required.

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3. Specifications for DIN2501 PN10 Titanium Plate Flange

4. Why We Choose Titanium Plate Flanges in the Applications?

Titanium plate flanges are chosen in various industries primarily due to their unique properties and advantages that make them suitable for specific applications where other materials may not perform as effectively.

Titanium exhibits exceptional corrosion resistance, especially in aggressive environments such as seawater, chemical processing, and marine applications. This resistance to corrosion helps extend the lifespan of equipment and reduces maintenance costs.

Titanium has a high strength-to-weight ratio, making it significantly stronger than many other metals such as stainless steel or aluminum alloys while being much lighter. This property is crucial in aerospace, marine, and automotive industries where weight savings are critical.

Titanium is biocompatible and non-toxic, making it ideal for medical implants such as orthopedic implants and surgical instruments. It integrates well with the human body and minimizes the risk of adverse reactions.

​Titanium retains its mechanical properties at elevated temperatures, making it suitable for applications where thermal stability is required. This includes aerospace components and industrial processes involving high heat.

​Titanium has a low coefficient of thermal expansion, similar to stainless steel. This property helps maintain dimensional stability in various temperature conditions, ensuring reliability in critical applications.

​Titanium is known for its durability and long service life, even in harsh operating conditions. This makes it a cost-effective choice over the long term, despite its higher initial cost compared to some other materials.

Titanium plate flanges are preferred in industries where their unique combination of properties is essential, such as aerospace, chemical processing, desalination plants, and offshore oil rigs.

5. The production process of titanium plate flanges

Material Selection:

Titanium Alloy: The process begins with selecting the appropriate titanium alloy based on the application requirements. Common alloys include Grade 2 (Ti-CP), Grade 5 (Ti-6Al-4V), and Grade 7 (Ti-0.15Pd), chosen for their specific mechanical properties, corrosion resistance, and other relevant characteristics.

Cutting and Forming:

Raw Material Preparation: Titanium billets or bars are cut into suitable lengths based on the required flange dimensions.

Forging or Rolling: The titanium material is heated to an optimal temperature and shaped using forging or rolling techniques to form the initial flange blanks. For weld neck flanges, this includes forming the neck and the flange face.

Machining:

Turning and Milling: The forged or rolled titanium blanks undergo precision machining operations. This includes turning to achieve the desired outer diameter (OD) and milling to create the flange face (raised face, flat face, or ring type joint per ASME B16.5 specifications).

Drilling: Holes are drilled into the flange to accommodate bolts and ensure proper alignment with the connecting pipes.

Weld Preparation:

Beveling: The ends of the weld neck flange, especially the area where it connects to the pipe, are beveled to facilitate welding. Proper beveling ensures strong weld joints and effective fusion.

Welding:

Welding Process: Titanium weld neck flanges are typically welded using TIG (Tungsten Inert Gas) welding or similar methods suitable for titanium alloys. Welding is performed with care to maintain a shielded atmosphere (argon or helium) to prevent contamination and oxidation, which can compromise the titanium's corrosion resistance.

Weld Inspection: Post-weld inspection includes non-destructive testing (NDT) methods such as dye penetrant testing or ultrasonic testing to verify the integrity of the welds.

Heat Treatment (if required):

Annealing: Depending on the titanium alloy and specific requirements, annealing or stress-relieving heat treatment may be applied to optimize material properties and reduce residual stresses.

Final Inspection and Testing:

Dimensional Inspection: Each weld neck flange undergoes rigorous dimensional checks to ensure it meets precise tolerances and specifications, including those set by ASME B16.5.

Visual and Surface Inspection: Visual inspections ensure there are no surface defects or imperfections that could affect performance or integrity.

Pressure Testing: Hydrostatic or pneumatic pressure testing may be conducted to verify the flange's pressure integrity and leak resistance under specified conditions.

Surface Treatment and Finishing:

Surface Coating: Depending on the application, surface treatments such as passivation or anodizing may be applied to further enhance corrosion resistance or improve surface finish.

Marking and Identification: Each flange is marked with essential information such as material grade, size, pressure class, and manufacturer identification for traceability.

Packaging and Shipping:

Once inspections and testing are completed satisfactorily, the titanium weld neck flanges are carefully packaged to prevent damage during transport and storage. They are then shipped to customers or distribution centers.

6. Common Standards of Titanium Flanges

7. Applications of DIN2501 Titanium Plate Flange

• Pipeline Construction: Used to join sections of pipelines, ensuring secure and leak-free connections during fluid transport.
• Refineries and Petrochemical Plants: Installed in processing units for connecting vessels, reactors, and heat exchangers, where resistance to corrosive chemicals is essential.
• Offshore Platforms: Employed in offshore drilling rigs and production platforms to withstand marine environments and harsh weather conditions.
• Gas Processing Facilities: Utilized in compressors, pumps, and valves to maintain operational integrity and safety.