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Industrial-grade copper-nickel alloy elbows conforming to ASME SB466 standards
This product is a copper-nickel alloy elbow conforming to ASME SB466 standards. This standard primarily specifies requirements for seamless tubing made from alloys such as UNS C70600 (i.e., copper-nickel 90/10), serving as the material foundation for manufacturing high-performance pipe fittings. Characterized by exceptional seawater corrosion resistance, marine biofouling resistance, and excellent machinability, these elbows are widely used in demanding piping systems across shipbuilding, offshore platforms, desalination plants, and coastal chemical industries. They provide a reliable, long-lasting solution for connecting and redirecting critical pipeline sections.
Core Industrial Advantages
Material Performance Advantages: Core materials (such as 90/10 copper-nickel alloy) are specifically engineered for harsh corrosive environments. They demonstrate significantly superior corrosion resistance (including pitting and stress corrosion) compared to standard stainless steel in seawater and chloride environments, while effectively inhibiting marine biofouling and delivering outstanding reliability.
Standard Compliance and Market Access Advantages: Compliance with ASME SB466 is a mandatory entry requirement for high-end international projects (e.g., offshore engineering, seawater desalination EPC), ensuring material quality traceability and safe compatibility/interchangeability with global piping systems.
Total Life-Cycle Cost Advantages: Despite higher initial costs, its exceptionally long service life and minimal maintenance requirements substantially reduce downtime, repair, and replacement expenses caused by corrosion. This results in lower overall ownership costs in corrosive environments and significant long-term economic benefits.
Application Domain Advantages: It has become the standard or preferred configuration in critical sectors such as marine seawater systems, desalination plants, coastal power stations, and chemical pipelines. It has established a robust application foundation in industries demanding high reliability and safety.
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Parameter Category |
Specific Item |
Description & Typical Values / Expanded Information |
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Core Standards & Material |
Base Material Standard |
ASME SB466 (equivalent to ASTM B466/B466M-09). This standard specifies the requirements for seamless copper-nickel alloy pipe. |
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Applicable Alloy Grades |
The standard covers several alloys; the most common is UNS C70600 (Copper-Nickel 90/10). Others include C70400, C71000, C71500, C71520, C72200. C70620 and C71520 are designed for subsequent welding. |
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Material Supply Condition |
Common tempers: Annealed (O60), Light Drawn (H55), Hard Drawn (H80), and Hard Drawn and End Annealed (HE80). |
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Key Chemical Composition |
Example for C70600: Copper (Cu) remainder, Nickel (Ni) 9-11%, Iron (Fe) 1.0-1.8%, Manganese (Mn) ≤1.0%. |
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Material Properties |
Typical Mechanical Properties |
Tensile Strength ≥ 275 MPa (Temper O60). Specific values vary by alloy grade and temper. |
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Typical Hardness |
Rockwell Hardness (HRB) ≤ 65 (Temper O60). |
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Applicable Temperature Range |
Based on commercial practice, typically recommended for -50°C to 200-300°C. |
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Manufacturing & Dimensions |
Fitting Manufacturing Standard |
Finished elbows are manufactured per ASME B16.9 (Butt-welding dimensions), MSS SP-43, etc. Marine applications may require additional standards. |
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Typical Manufacturing Process |
Hydraulic cold forming, hot push forming, stamping, etc. Advanced processes ensure dimensional accuracy and performance. |
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Typical Size Range |
Nominal Diameter (DN) DN20 - DN500 (or NPS 1/2" - 20"), custom sizes available. |
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Typical Wall Thickness Schedule |
SCH10, SCH40, SCH80, SCH160, etc. |
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Bending Angle & Radius |
Common angles: 45°, 90°, 180°. Typical radius: Long Radius (LR, 1.5D), Short Radius (SR, 1.0D) also available. |
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End Connection Type |
Butt Weld (BW) (most common), Socket Weld (SW), or Threaded. |
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Quality Control & Testing |
Key Testing/Inspection Items |
Chemical Composition Analysis, Mechanical Property Tests (tensile, hardness), Dimensional Accuracy & Wall Thickness Uniformity, Non-Destructive Testing (Ultrasonic, Radiographic), Surface & Internal Defect Inspection, Corrosion Resistance Evaluation. |
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Common Quality Certifications |
ISO 9001 Quality Management System Certification. |
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Applications & Certifications |
Primary Application Fields |
Ships & Offshore Platforms, Seawater Desalination Plants, Coastal Power Stations, Chemical Processing Systems (e.g., Sinopec projects). |
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Industry-Specific Certifications |
For marine seawater piping systems, Classification Society Certifications are often required, such as: China CCS, Norway DNV, USA ABS, Germany GL (now part of DNV). |
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System Compatibility |
Typically used with matching material butt-weld flanges, tees, reducers, etc., to form a complete piping system. |
Marine Engineering and Shipbuilding
Seawater Desalination
Energy and Power (Coastal Power Plants)
Chemical and Process Industries
Special and Emerging Applications
We provide a complete range of pipe fittings (elbows, flanges, tees, etc.) compliant with international standards such as ASME, ensuring full material compatibility within systems and eliminating galvanic corrosion risks at the source.
Collaborate closely with upstream specialty metal manufacturers to guarantee raw material traceability. Support non-standard customization and rapid delivery to efficiently meet special dimensions and technical requirements.
Implement full-process inspection from raw materials to finished products. Provide various classification society certifications required for entry into marine engineering, shipbuilding, and other sectors.
We provide full-cycle technical support—from preliminary material selection and operating condition analysis to installation guidance—serving as your technical partner to deliver customized engineering solutions.
Our products have been successfully deployed in major domestic and international projects, including seawater desalination, ocean-going vessels, offshore platforms, and energy/chemical facilities. Their reliability and service capabilities are extensively validated through real-world performance.
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