ASME U Stamp Certified SA334 Gr.6 Carbon Steel U-Bend Bundle for Ammonia Exchangers
Yuhong Holding Group Co., Ltd is a globally recognized manufacturer and supplier of industrial equipment, specializing in heat exchangers, fired heaters, air coolers, and related components. With years of expertise and a production capacity exceeding 6000 tons annually, we are committed to delivering high-quality solutions to meet the rigorous demands of various industries. Among our premium products is the ASME SA334 GRADE 6 Carbon Steel Seamless U Bend Tube Bundle, designed for efficient heat transfer in heat exchangers.
SA334 Gr.6 Carbon Steel U-Bend Bundle Chemical Composition and Mechanical Properties
ASME SA334 GRADE 6 is a low-temperature carbon steel known for its excellent toughness, durability, and machinability. It is widely used in heat exchangers and other critical applications, especially in environments where low-temperature performance is essential.
Chemical Composition of SA334 GRADE 6
| Element | Composition (%) |
| Carbon (C) | ≤ 0.30 |
| Manganese (Mn) | 0.29–1.06 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.025 |
| Silicon (Si) | 0.10 min |
Mechanical Properties of SA334 GRADE 6
| Property | Value |
| Tensile Strength | ≥ 415 MPa (60,000 psi) |
| Yield Strength | ≥ 240 MPa (35,000 psi) |
| Elongation | ≥ 30% |
| Impact Test | Passed at -50°F (-45°C) |
The combination of strength, ductility, and low-temperature impact resistance makes SA334 GRADE 6 an ideal choice for heat exchanger tube bundles.
Common Types of Heat Exchanger Tube Bundles
Heat exchanger tube bundles are essential components that facilitate heat transfer between fluids. The U Bend Tube Bundle is one of the most efficient designs, allowing for thermal expansion and contraction without causing stress on the tubes.
Types of Tube Bundles
- Straight Tube Bundles: Designed for heat exchangers where space and thermal expansion are not constraints.
- U Bend Tube Bundles: Ideal for compact heat exchangers, enabling high thermal efficiency and accommodating thermal expansion.
- Floating Head Tube Bundles: Used in applications with frequent cleaning requirements, as they allow easy disassembly.
- Fixed Tube Sheet Bundles: Suitable for non-corrosive and low-fouling fluids.
The U Bend Tube Bundle offered by Yuhong Holding Group is seamlessly manufactured and designed to deliver superior performance in heat exchanger applications.
Testing Requirements for SA334 Gr.6 Carbon Steel U-Bend Bundle
To ensure the highest quality and reliability, heat exchanger tube bundles must undergo rigorous testing. At Yuhong Holding Group, every tube bundle is tested to meet or exceed industry standards.
Key Tests for U Bend Tube Bundles
- Hydrostatic Testing: Ensures the tubes can withstand high pressures without leakage.
- Non-Destructive Testing (NDT): Includes eddy current testing and ultrasonic testing to detect surface and subsurface defects.
- Dimensional Inspection: Verifies the accuracy of U bends, tube lengths, and diameters.
- Hardness Testing: Ensures the material meets the required mechanical properties.
- Low-Temperature Impact Testing: Confirms the toughness of the material at low operating temperatures.
- Visual Inspection: Examines the surface for any visible defects or imperfections.
Each tube bundle we produce is accompanied by detailed test reports and certifications to guarantee its quality and performance.
Applications of SA334 Gr.6 Carbon Steel U-Bend Bundle
U Bend Tube Bundles are widely used in various industries for their outstanding heat transfer efficiency and durability. Key application areas include:
- Petrochemical Plants: For heat recovery and cooling systems.
- Power Plants: Used in steam condensers and feedwater heaters.
- Oil and Gas Industry: For processing and refining operations.
- Chemical Processing: Where high-performance heat exchangers are critical.
- HVAC Systems: For air conditioning and refrigeration systems.
- Food and Beverage Industry: Used in sanitary heat exchangers.
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