ASME SB111 C68700 Aluminium Brass U Bend Heat Exchanger Tube

ASME SB111 C68700 Aluminium Brass U Bend Heat Exchanger Tube

The ASME SB111 C68700 Aluminium Brass U-Bend Heat Exchanger Tube is a high-performance product widely used in heat exchanger and condenser systems, particularly in industries such as power generation, desalination, petrochemicals, and marine applications. It is known for its excellent thermal conductivity, high corrosion resistance, and mechanical strength, making it suitable for demanding environments.

Material Composition and Properties

The C68700 Aluminium Brass alloy is a copper-based material that contains aluminum, zinc, and a small amount of arsenic. The key features of this material include:

• Material Composition:

  • Copper (Cu): ~76%
  • Zinc (Zn): ~22%
  • Aluminum (Al): ~2%
  • Arsenic (As): Trace amounts (for improved corrosion resistance)

• Key Properties:

  • High Corrosion Resistance: Especially in saltwater environments, making it ideal for marine applications.
  • Excellent Thermal Conductivity: Ensures efficient heat transfer.
  • Good Mechanical Strength: Suitable for high-pressure and high-temperature environments.
  • Anti-Fouling Properties: Resistance to biofouling and scaling in water-based systems.

U-Bend Tube Configuration

The U-Bend Heat Exchanger Tube is manufactured by bending straight tubes into a "U" shape, which optimizes the heat transfer process in compact heat exchangers. Key features include:

1. Precision Manufacturing:

   • Tight radius tolerances to ensure proper system fit.
   • Smooth inner and outer surfaces to maximize fluid flow and thermal efficiency.

2. Customization:

   • Available in a range of diameters, wall thicknesses, and bending radii to meet specific design requirements.
   • Can be tailored for different working pressures and temperatures.

3. Post-Bending Processes:

   • Stress relief annealing: To restore mechanical properties and prevent stress-related failures.
   • Hydrostatic testing: Ensures the integrity of the tube after bending.

Applications

The ASME SB111 C68700 Aluminium Brass U-Bend Tubes are widely used in:

1. Heat Exchangers:

   • Power plants
   • Chemical processing plants
   • HVAC systems

2. Condensers:

   • Marine desalination units
   • Shipbuilding

3. Evaporators:

   • Water treatment systems
   • Industrial cooling systems

4. Marine Applications:

   • Saltwater cooling systems due to their resistance to chloride-induced corrosion.

Advantages of ASME SB111 C68700 Aluminium Brass Tubes

• Superior resistance to seawater corrosion.
• Long service life in harsh environments.
• Low maintenance requirements due to anti-fouling properties.
• High thermal efficiency for improved system performance.

Specifications

• Standard: ASME SB111
• Material Grade: C68700
• Sizes:
  • Outer Diameter: 12.7 mm to 76.2 mm (customizable)
  • Wall Thickness: 0.5 mm to 5 mm
  • U-Bend Radius: As per customer requirements
• Testing:
  • Hydrostatic or pneumatic pressure testing
  • Eddy current testing for defect detection
  • Dimensional and visual inspection