Aluminium Brass Tube ASME SB111 C68700 U Bend Heat Exchanger Tube For Refinery Coolers
Price:
Negotiable
MOQ:
1PC
Delivery Time:
According to the quantity
Brand:
YUHONG GROUP
Product Description
Aluminium Brass Tube ASME SB111 C68700 U Bend Heat Exchanger Tube For Refinery Coolers
Product Specifications
| Tube Material | C12200, C44300, C68700, C70600 |
| Length | Max 34M/PC |
| O.D. | 6-50.8mm |
| W.T. | 0.5-15mm |
| Testing | UT, ET, HT, PMI |
| Product Name | Aluminium Brass Tube |
Applications
Marine & Offshore Systems
- Seawater Cooled Condensers & Heat Exchangers: Shipboard condensers (main engine cooling), Offshore oil rig heat exchangers (cooling hydraulic systems, lube oil), Desalination plants (multi-stage flash evaporators)
Power Generation (Fossil & Nuclear)
- Steam Surface Condensers: Coastal/nuclear power plants (seawater-cooled condensers), Waste heat recovery units (exhaust gas boilers)
Chemical & Petrochemical Processing
- Corrosive Fluid Heat Transfer: Refinery coolers (hydrocarbon processing), Ammonia condensers (fertilizer plants)
HVAC & Refrigeration
- Chillers & Evaporators: Compact design fits shell-and-tube evaporators (e.g., industrial chillers), Seawater-cooled HVAC (tropical coastal buildings), Industrial refrigeration systems
Industrial Process Cooling
- High-Temperature/Pressure Exchangers: Meets strict dimensional tolerances for high-pressure systems, Brewery/distillery wort coolers, Pulp & paper mill heat recovery
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength (UTS) | 380 - 520 MPa (55,000 - 75,000 psi) |
| Yield Strength (0.2% Offset, YS) | 140 - 310 MPa (20,000 - 45,000 psi) |
| Elongation (in 50mm) | 35 - 45% (varies with temper) |
| Hardness (Rockwell B) | 50 - 85 HRB |
| Modulus of Elasticity | 100 - 110 GPa (14.5 - 16 Msi) |
Strength Considerations
Temperature Effects
- At Elevated Temperatures (~150-250°C / 302-482°F): Tensile strength decreases by ~20-30%
- Below 0°C (32°F): Becomes slightly stronger but more brittle (impact resistance drops)
Corrosion & Erosion Impact
- Dezincification or pitting can reduce effective wall thickness
- Erosion-corrosion (high-velocity seawater) may accelerate wear
U-Bend Stress Considerations
- The bent region is work-hardened, increasing local strength
- Residual stresses from bending may require stress relief annealing
Material Comparison
| Material | Tensile Strength (MPa) | Yield Strength (MPa) | Key Advantage |
|---|---|---|---|
| C68700 (Al Brass) | 380-520 | 140-310 | Best for seawater corrosion |
| C70600 (90/10 Cu-Ni) | 290-400 | 120-200 | Better sulfide resistance |
| C71500 (70/30 Cu-Ni) | 350-550 | 140-350 | Higher strength than C70600 |
| Titanium Gr. 2 | 345-483 | 275-345 | Lightweight, no corrosion |
| Carbon Steel | 400-550 | 205-250 | Cheap but rusts easily |
Design & Operational Limits
- Max Allowable Pressure: Depends on tube diameter/wall thickness (use ASME BPVC Section VIII for calculations)
- Fatigue Life: Excellent for cyclic thermal loads (U-bend accommodates expansion)
- Avoid: Over-tightening in tube sheets (can collapse thin-walled tubes). Excessive vibration (may cause fretting wear)
Testing & Certification
- Hydrostatic Test: Ensures no leaks at 1.5x design pressure
- Eddy Current/UT Testing: Checks for defects affecting strength
- Certifications: ASTM B111 / ASME SB111, EN 12451 (EU)
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
YUHONG HOLDING GROUP CO., LTD
Location
20 Floor, No.1 New World Building, NO.1018 Min'an Road, Yinzhou District, Ningbo, China, ZIP:315040
Contact Person
Sales Dept. (Marketing Director)