Seawater Resistant ASTM B111 C44300 U-Bend Tubes Heat Exchanger Supplier
Price:
Negotiable
MOQ:
300KG
Delivery Time:
Depends on quantity
Brand:
YUHONG
Product Description
ASTM B111 C44300 U-Bend Tubes: High-Performance Admiralty Brass for Critical Heat Transfer
Product Overview of C44300 U-Bend Tubes
C44300 U-Bend Tubes are engineered from arsenical admiralty brass (UNS C44300), offering exceptional seawater corrosion resistance and biofouling mitigation. These cold-formed U-bend tubes meet ASTM B111 specifications for seamless condenser and heat exchanger systems, providing reliable thermal conductivity (≥80 W/m·K) in high-salinity, high-temperature environments up to 150°C. Ideal for power plants, desalination units, and marine applications.
Chemical Composition of C44300 U-Bend Tubes
| Element | Cu | Zn | Sn | As | Pb (max) | Fe (max) | Impurities (max) |
|---|---|---|---|---|---|---|---|
| % Range | 70.0–73.0 | Rem. | 0.9–1.2 | 0.02–0.06 | 0.07 | 0.06 | 0.15 |
Global Equivalent Grades
| Standard | Equivalent Grade | Key Similarities |
|---|---|---|
| EN | CW706R | Matching Cu/Zn/Sn ratios, seawater approval |
| JIS | C4430B | Identical As content, condenser applications |
| DIN | CuZn28Sn1As | Corrosion performance parity |
| GB | HSn70-1A | Comparable mechanical properties |
Mechanical Properties of C44300 U-Bend Tubes
| Property | Value | Test Method |
|---|---|---|
| Tensile Strength | ≥325 MPa (47 ksi) | ASTM E8/E8M |
| Yield Strength (0.5% ext.) | ≥105 MPa (15 ksi) | ASTM E8/E8M |
| Elongation (50mm) | ≥40% | ASTM E8/E8M |
| Hardness (Rockwell B) | 45–65 HRB | ASTM E18 |
| U-Bend Specific: | ||
| Bend Radius Tolerance | ±1.5 × OD | ASTM B111 Fig. 3 |
| Ovality Post-Bending | ≤8% of OD | ASTM B111 |
Precision Tolerances for U-Bend Tubes
| Parameter | Tolerance (±) | Notes |
|---|---|---|
| Outer Diameter (OD) | 0.10 mm (≤25mm OD) | Measured at straight sections |
| 0.15% (＞25mm OD) | ||
| Wall Thickness | +20% / -10% | Min. wall at bend apex maintained |
| U-Bend Leg Length | ±3.0 mm | Laser-verified pre-assembly |
| Bend Angle | ±1.5° | Per tube bundle fitment specs |
| Straightness | 1.5 mm/m | Ensures no flow obstruction |
Marine & Industrial Applications
Primary Use Cases:
- Power Generation: Condenser tubes in nuclear/coal-fired plants (resists ammonia attack)
- Desalination: Multi-stage flash (MSF) evaporator U-bends
- Marine Systems: Shipboard heat exchangers, oil coolers
- Chemical Processing: Sulfuric acid coolers, refinery overhead condensers
Similar Products
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Yuhong Group Co.,Ltd
Location
20TH FLOOR,NO.1 NEW WORLD BUILDING ,NO.1018 MINAN ROAD,YINZHOU DISTRICT, NINGBO CITY, ZHEJIANG PROVINCE, CHINA
Contact Person
Jikin Cai