I. Core Application Areas
1. Petrochemical and Chemical Industry
Corrosive Media Transportation: Used for connecting pipelines carrying highly corrosive fluids such as chlorine, sulfuric acid, and nitric acid. Titanium flanges can significantly reduce maintenance frequency and extend system life.
High-Temperature and High-Pressure Systems: Titanium alloy flanges are required in cracking units, reactors, and other applications. Their creep resistance remains stable at high temperatures of 300-600°C. Grade 9 Ti-3Al-2.5V Titanium Foil / titanium flange / Gr1 Pure Titanium Sheet
2. Aerospace Field
Engines and Fuel Systems: Titanium alloy flanges are used in aircraft engine combustion chambers, fuel injection systems, and hydraulic lines. Their lightweight properties improve fuel efficiency.
Spacecraft and Rockets: Liquid oxygen/liquid hydrogen transport pipelines and propulsion systems require the low-temperature toughness and radiation resistance of titanium alloys.
3. Marine Engineering and Shipbuilding
Seawater Desalination and Salt Spray Environments: TA2 titanium flanges are resistant to seawater erosion and salt spray corrosion, suitable for offshore platforms, ship ballast water systems, and other applications.
Non-Magnetic Requirements: The non-magnetic properties of titanium flanges prevent interference with ship navigation equipment.
Non-Magnetic Detection Equipment: In precision instruments such as nuclear magnetic resonance imagers, titanium flanges prevent electromagnetic interference.
II. Key Selection Factors
1. Material Suitability
Highly Corrosive Environments: TA9 or Gr7 should be prioritized due to their superior resistance to pitting and crevice corrosion.
High Temperature and High Pressure: Titanium alloy TC4 maintains strength stability below 600°C, suitable for high-temperature petrochemical pipelines.
General Lightweight Applications: TA1/TA2 pure titanium is more cost-effective and suitable for general industrial pipelines.
2. Structural Form and Sealing Design
High-Pressure Systems: Butt-welded flanges with ring joint face seals are used, with a pressure rating of PN≥10.0MPa.
Frequent Maintenance Scenarios: Lap joint flanges are easy to disassemble and assemble, reducing maintenance costs.
Low-Pressure Small-Diameter Pipelines: Threaded flanges or socket-welded flanges can save costs.
3. Process and Inspection Standards
Forging Grade: Grade III forgings are mandatory for ultra-high pressure applications. Inspection requirements: The product must pass ultrasonic flaw detection and dimensional tolerance testing.
