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Heat Exchanger / Air Cooler / Pressure Vessel / Fired Heater
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API 660 Heat Exchanger Bundle ASTM B111 C70600 CuNi Tubes, EN 12452 Seawater Resistance
This API 660-compliant shell-and-tube bundle integrates seamless cold-drawn C70600 CuNi tubes (90-10 alloy) for superior erosion-corrosion resistance in marine environments. Certified to EN 12452 for seawater applications, it ensures reliability in offshore cooling systems, desalination plants, and high-salinity industrial processes. Full eddy current tested per ASTM B111.
C70600 Copper Alloy Seamless Tube bundle Chemical Composition Advantages
| Element | Composition (wt%) |
| Cu | 88.6 min |
| Ni | 9.0–11.0 |
| Fe | 1.0–1.8 |
| Mn | 0.5–1.0 |
| Others | Zn ≤1.0, Pb ≤0.05 |
C70600 Copper Alloy Seamless Tube bundle Mechanical Properties Advantages
| Property | Typical Values |
| Tensile Strength (MPa) | 290–380 (Annealed) |
| 550–690 (Cold Worked) | |
| Yield Strength (MPa) | 120–170 (Annealed) |
| 480–620 (Cold Worked) | |
| Elongation (%) | ≥30 (Annealed) |
| ≥5 (Cold Worked) | |
| Hardness (HV) | 80–120 (Annealed) |
| 160–200 (Cold Worked |
C70600 Copper Alloy Seamless Tube bundle Delivery Condition Advantages
| Condition | Features |
| Annealed (O) | Soft, ductile, easy to form/weld. |
| Cold Drawn (H) | High strength, tight dimensional tolerance. |
| Stress-Relieved | Reduced residual stress, improved stability. |
| PART NO. | DESCRIPTION | MATERIAL | QTY PER SET | REMARK |
| 1 | Pulling Lug | SA-516 Gr.70 | 2 | Size: 15" |
| 2 | Pushing Plate | SA-516 Gr.70 | 14 | 120mm thickness |
| 3 | Hex Plate | SA-36 | 14 | - |
| 4 | Lifting Lug Plug | S.S 304 | 2 | M24 thread |
| 5 | Impingement Plate | SA-283 Gr.C | 2 | Size: 3" |
| 6 | Sealing Strips | SA-283 Gr.C | 4 | Brass material |
| 7 | Sung Plate | SA-283 Gr.C | 4 | Thickness: 4.4mm |
| 8 | Support Plate | SB-179 | 6 | VA/Brass variant |
| 9 | Cable | SB-170 | 1 | Length: 1.3m |
10 industries where heat exchangers API 660 Heat Exchanger Bundle ASTM B111 C70600 CuNi Tubes commonly used,
1. Offshore Oil & Gas
2. Petrochemical Refining
3. Marine & Shipbuilding
4. Power Generation
5. Chemical Processing
6. LNG Processing & Storage
7. Water Desalination
8. Pulp & Paper Industry
9. Food & Beverage
10. Renewable Energy (Ocean Thermal)
