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C71500 Copper Nickel LR Elbow Forged Butt Welding Fittings ASME B16.9 High Strength
| Place of Origin | Shanghai,China |
|---|---|
| Brand Name | TOBO |
| Certification | ISO/TUV/SGS |
| Model Number | Copper Nickel Elbow |
| Minimum Order Quantity | 1PC |
| Price | Negotiable |
| Packaging Details | Standard Shipping Package |
| Delivery Time | 15-30 Workdays |
| Payment Terms | T/T, Western Union |
| Supply Ability | 10Ton/Month |
Product Details
| Product Name | C71500 Copper Nickel LR Elbow Forged Butt Welding Fittings ASME B16.9 High Strength | Country Of Origin | China |
|---|---|---|---|
| Grade | Cooper | Sizerange | 1/2 Inch To 24 Inches |
| Customized | Customized Support | Corrosion Resistance | Excellent |
| Processing Technology | Forging | Wallthickness | Schedule 10, 40, Or As Per Customer Requirement |
| Quality Grade | The Real Thing | Standards | ASTM B466, ASTM B111, ASME B16.9 |
| Payment Term | T/T, L/C, Etc. | Wall Thickness | 14 Bar, 16 Bar, 20 Bar |
| Connectiontype | Butt Weld, Socket Weld | Pressure Rating | 150 - 3000 PSI |
Product Description
C71500 Copper Nickel LR Elbow Forged Butt Welding Fittings ASME B16.9 High Strength
1.Product Description
The Copper Nickel Elbow is a pipe fitting manufactured from copper-nickel alloy base material, formed through hot-working processes into a curved arc structure for directional change connections in piping systems. The product covers two mainstream material grades: UNS C70600 (copper-nickel 90/10) and UNS C71500 (copper-nickel 70/30), each suited to different corrosion severity levels and temperature requirements.
Key geometric parameters include bend angles (standard 45°, 90°, 180°), bend radius (Long Radius 1.5D and Short Radius 1.0D), and wall thickness schedules (full range from Sch5S to XXS). Manufacturing processes encompass seamless push‑forming, hot extrusion, and medium‑frequency hot bending, adaptable to various diameters and precision requirements. End connections are flexible, available in Butt‑Weld, Socket‑Weld, and Threaded types, with bevels machined per ASME B16.25 standards.
Product inspection is stringent, with material certificates, dimensional inspection reports, and necessary NDT reports supplied upon shipment. Markings are permanent and clearly legible, ensuring full traceability to heat numbers and production batches for every individual piece.
2.Product Applications
Copper Nickel Elbows are primarily used in piping systems requiring long‑term resistance to chloride‑induced corrosion. Typical application scenarios and corresponding selection recommendations are as follows:
Marine Engineering and Shipbuilding
Applied in shipboard overboard seawater cooling systems, ballast tank lines, deck wash systems, and firewater piping; as well as offshore drilling platform and FPSO production facility process lines. In such high‑salinity environments, C70600 elbows offer the most cost‑effective solution.
Power Generation and Nuclear Facilities
Used in thermal power plant condenser circulating water lines, nuclear facility equipment cooling water systems, and gas turbine inlet cooling systems. When water temperatures exceed 60°C or chloride content surpasses 20000ppm, C71500 is recommended to ensure long‑term operational reliability.
Chemical and Petrochemical Plants
Employed in refinery brine treatment systems, chemical plant corrosive media transfer lines, and oil/gas field gathering pipelines. Special attention is required if the medium contains ammonia or amine compounds, which necessitate additional material suitability evaluation.
Desalination and Water Treatment
Used in brine recirculation systems for MSF and MED desalination units, as well as pre‑treatment lines in membrane‑based water treatment. These service conditions impose both corrosion and erosion loads, requiring adequate wall thickness margins.
HVAC and Industrial Cooling
Applied in large commercial building and industrial facility central air‑conditioning chilled water systems, and closed‑loop cooling circuits for process equipment. These services are less corrosive, and C70600 meets service life requirements exceeding 25 years.
3.Product Advantages
Material Corrosion Resistance
Copper‑nickel alloys rely on naturally formed oxide films for protection, which continuously regenerate in flowing seawater. Unlike the molybdenum‑based passivation of 316L stainless steel, copper‑nickel alloys maintain stable passivation even in stagnant seawater and low‑flow conditions, unaffected by oxygen depletion.
Machinability Advantage
The hot‑working temperature range for copper‑nickel elbows is broad, with minimal forming stresses. Room‑temperature machinability approaches that of carbon steel, offering high efficiency in drilling, turning, and threading operations with lower tool wear than stainless steel. This facilitates emergency on‑site modifications or secondary processing.
Welding Engineering Benefits
Field welding requires no complex preheating procedures—even in winter conditions, simple preheating to 50°C is sufficient. A wide range of filler materials may be used, including matching copper‑nickel electrodes or, under specific conditions, nickel‑based consumables. Post‑weld joints maintain stable mechanical properties and good impact toughness.
Comprehensive Economic Advantage
Over a 20‑year service life compared to carbon steel solutions, total costs (procurement + installation + maintenance + replacement) for copper‑nickel elbows are approximately 65% of carbon steel, while also avoiding the risk of unplanned production outages. Compared to titanium alloy solutions, copper‑nickel elbows cost only 15%–20% as much as titanium, yet provide fully adequate corrosion resistance in the vast majority of seawater services.
Reliability Assurance
Copper‑nickel elbows have over 50 years of proven service history in marine and offshore engineering, with extremely few failure cases. All major classification societies (DNV, ABS, BV, LR, CCS) recognize copper‑nickel materials for seawater piping systems. Products can be supplied with classification survey certificates, facilitating international project acceptance.
4.Key Product Specifications
| Item | Technical Data |
| Grade vs. Medium Reference | C70600: Clean seawater, fresh water, steam, petroleum products, general chemicals; C71500: Contaminated seawater, brackish water, sand-laden media, high-temperature brine, sulfur-bearing media |
| Size Supply Range | DN15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300, 350, 400, 450, 500, 600 (larger negotiable) |
| Standard Wall Schedules | Sch5S, Sch10S, Sch40S, Sch80S, Sch160, XXS, covering 2.0mm to 60mm |
| Angle Series | 22.5°, 30°, 45°, 60°, 90°, 180° (others per drawing) |
| Radius Series | 1.0D, 1.5D, 2.0D, 2.5D, 3.0D (1.5D standard stock) |
| End Finishing | Butt-weld ends with bevels per ASME B16.25; Socket-weld socket depth ≥1.2×wall thickness; Threaded ends per NPT or BSP standards |
| Manufacturing Tolerances (Key Items) | OD ±0.8~2.4mm (increasing with size); Wall thickness +12.5%/-0%; Angle ±0.5°~±1.0° |
| Wall Thickness Control | Back side thinning ≤12.5% of nominal wall thickness; intrados thickening has no negative tolerance implication |
| Material Properties (Guaranteed) | C70600 Tensile≥290MPa, Yield≥110MPa, Elongation≥30%, Hardness≤125HBW; C71500 Tensile≥370MPa, Yield≥130MPa, Elongation≥30%, Hardness≤145HBW |
| Maximum Operating Temperature | C70600: 260°C (continuous) / 320°C (intermittent); C71500: 300°C (continuous) / 350°C (intermittent) |
| Common Pressure Ratings | Class 150 (PN20), Class 300 (PN50), Class 600 (PN100), Class 900 (PN150) |
| Pressure Temperature Derating | Pressure derating per ASME B31.3 required when temperature exceeds 38°C |
| Minimum Bend Radius Limitation | Push forming process minimum 1.0D; Medium frequency hot bending minimum 1.5D; below 1.0D requires casting or forging processes |
| Surface Quality Requirements | Internal and external surfaces free from cracks, folds, or overburning; minor draw marks ≤0.2mm depth permitted |
| Packaging Protection Standards | Each piece with independent cushioning packaging; outer packaging marked with centre of gravity and lifting points; moisture-proof and salt-spray protection for export shipments |
| Delivery Documentation | Quality certificate (EN 10204 3.1), dimensional inspection records, heat treatment reports, RT/PT reports (if applicable), material retest records |
| Additional Certification Services | Classification society (DNV/ABS/BV/LR/CCS) inspection and certification available upon request at additional cost |
FAQ
1. Are you trading company or manufacturer ? We are manufacturer ,You can see the certification.
2.How long is your delivery time? Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
3. Do you provide samples ? is it free or extra ? Yes, we could offer the sample for free charge but need pay the cost of freight.
4. What is your terms of payment ? Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shippment.
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