Yuhong Group Co.,Ltd
| Payment Terms | L/C,T/T |
| Supply Ability | Ply-wooden Case /Iron Case/ Bundle with plastic Cap/Woven Case |
| Delivery Time | Depends on quantity |
| Packaging Details | 1000 tons per month |
| Material Grade | UNS C44300 |
| Standard Compliance | ASTM B111 / ASME SB111 |
| Tube Form | U-Bend (Cold Formed) |
| Primary Alloy | Arsenical Admiralty Brass |
| Biofouling Resistance、 | ASTM D6990 Certified |
| Seawater Approval | MIL-T-16420 Compliant |
| Brand Name | YUHONG |
| Model Number | ASTM B111 C44300 |
| Certification | ABS, GL, DNV, NK, PED, AD2000, ISO 9001 |
| Place of Origin | CHINA |
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Product Specification
| Payment Terms | L/C,T/T | Supply Ability | Ply-wooden Case /Iron Case/ Bundle with plastic Cap/Woven Case |
| Delivery Time | Depends on quantity | Packaging Details | 1000 tons per month |
| Material Grade | UNS C44300 | Standard Compliance | ASTM B111 / ASME SB111 |
| Tube Form | U-Bend (Cold Formed) | Primary Alloy | Arsenical Admiralty Brass |
| Biofouling Resistance、 | ASTM D6990 Certified | Seawater Approval | MIL-T-16420 Compliant |
| Brand Name | YUHONG | Model Number | ASTM B111 C44300 |
| Certification | ABS, GL, DNV, NK, PED, AD2000, ISO 9001 | Place of Origin | CHINA |
| High Light | Seawater resistant ASTM B111 tubes ，C44300 U-bend heat exchanger tubes ，Stainless steel seamless U-bend pipes | ||
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.
| 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 |
| 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 |
| 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 |
| 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 |
Primary Use Cases:
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller,Other
Year Established:
2007
Total Annual:
50M-70M
Employee Number:
50~850
Ecer Certification：
Verified Supplier
YUHONG HOLDING GROUP is one of the largest Procurement, Engineering & Contracting Group companies in China. Our group branch company and factory have been already approved by : ABS, LR, DNV, GL, BV, CCS, KR, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9... YUHONG HOLDING GROUP is one of the largest Procurement, Engineering & Contracting Group companies in China. Our group branch company and factory have been already approved by : ABS, LR, DNV, GL, BV, CCS, KR, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9...
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