Introduction
ASTM B111 / ASME SB111 Copper Alloy U-Bending Seamless Tubes are designed for heat exchanger and condenser applications, where reliable corrosion resistance, thermal conductivity, and bending performance are critical. These tubes are manufactured in seamless form, precision U-bent, and delivered in bright annealed condition to ensure smooth inner surfaces, enhanced cleanliness, and excellent heat transfer efficiency.
All tubes undergo 100% Eddy Current Testing (ET) to guarantee defect-free performance, making them suitable for demanding power plants, desalination, petrochemical, and marine heat exchanger projects.
Product Details
| Item | Details |
|---|---|
| Standard | ASTM B111 / ASME SB111 |
| Material | Copper Alloys (C44300 Admiralty Brass, C68700 Aluminium Brass, C70600 CuNi 90/10, C71500 CuNi 70/30, etc.) |
| Type | Seamless Tube, U-Bent |
| Heat Treatment | Bright Annealed |
| Testing | 100% Eddy Current Testing (ET) |
| Shape | Straight or U-Bending |
| Applications | Heat exchangers, condensers, power plants, desalination, marine systems |
Key Features
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Seamless Construction – ensures mechanical strength and leak-free performance.
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U-Bending Process – precisely formed for tube bundles in heat exchangers.
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Bright Annealed Finish – smooth internal surface, reduced fouling, improved heat transfer.
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100% Eddy Current Tested – guarantees defect-free supply for critical projects.
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Wide Material Range – available in Admiralty Brass (C44300), Aluminium Brass (C68700), CuNi 90/10 (C70600), CuNi 70/30 (C71500).
Applications
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Heat Exchangers & Condensers – in power generation, refineries, and chemical plants.
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Desalination Units – seawater cooling and brine service.
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Marine Engineering – shipboard cooling systems.
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Industrial Cooling & Heating – HVAC and petrochemical facilities.
Why Choose DLSS?
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Expertise in U-bend seamless tube manufacturing with tight bending radius control.
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Complete copper alloy supply – from brass to copper-nickel grades.
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International certifications – MTC EN 10204/3.1, SGS, BV, TUV optional.
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Strict Quality Assurance – 100% ET, hydrostatic, and dimensional inspection.
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Export Packaging – tube bundles protected with plastic caps, wrapping, and ISPM-15 wooden cases.
Frequently Asked Questions (FAQ)
Q1: Which copper alloys are available for ASTM B111 / ASME SB111 U-bending tubes?
A1: C44300 (Admiralty Brass), C68700 (Aluminium Brass), C70600 (CuNi 90/10), and C71500 (CuNi 70/30).
Q2: What is the benefit of bright annealed U-tubes?
A2: They have smoother surfaces, improved cleanliness, and enhanced heat transfer efficiency.
Q3: What inspections are included?
A3: 100% Eddy Current Testing (ET), hydrostatic testing, and third-party inspections (SGS, BV, TUV) if required.
Q4: Can DLSS supply tube bundles with U-bends ready for assembly?
A4: Yes, we provide pre-bent tube bundles for heat exchangers and condensers.
