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ASTM A179 Carbon Steel U Bend Tube
Overview
ASTM A179 U-bend tube is a type of heat exchanger tube that is made from carbon steel and conforms to the standards set by the American Society for Testing and Materials (ASTM). The "U-bend" refers to the shape of the tube, which features a U-shaped bend with two straight legs.These tubes are commonly used in applications involving heat transfer, such as boilers, condensers, and other industrial equipment. The U-bend design allows for efficient heat exchange and is often used where space is limited or a compact design is required.
The benefits of U Bend Tube
1>.Efficient Heat Transfer: The U-bend design of these tubes allows for maximum heat transfer efficiency due to increased surface area. The curved shape increases turbulence and enhances the exchange of heat between the fluid inside the tube and the surrounding environment.
2>.Compact Design: U-bend tubes are known for their compact design, which is ideal for installations where space is limited. The U shape minimizes the overall length of the tube while maintaining effective heat transfer, making it suitable for applications with space constraints.
3>.Reduced Pressure Drop: The smooth inner surface of ASTM A179 U-bend tubes helps in reducing pressure drop during fluid flow. This results in improved system performance with efficient fluid circulation.
4>.Versatility: ASTM A179 U-bend tubes are compatible with a wide range of fluids and can handle a variety of heat exchange applications. They are commonly used in industries such as oil and gas, petrochemical, power generation, HVAC, and refrigeration.
Chemical Composition of ASTM A179
| Grade | C | Mn | S | P | |
| A179 | Min | 0.06 | 0.27 | ||
| Max | 0.18 | 0.63 | 0.035 | 0.035 |
Mechanical Properies of ASTM A179
| Grade | Tensile Str Ksi(Mpa) | Yield Str Ksi(Mpa) | Elongation(%) |
| A192 | ≥47(325) | ≥26(180) | ≥35 |
Wall Thickness Tolerance of ASTM A179
| Seamless, Cold-Finished Tubes | Type | Wall Thickness Tolerance | |
| OD Range | Under(-) | Over(+) | |
| 0~38.1mm (Incl.) | SMLS | 0 | 20% |
| 38.1mm~76.2mm (Incl.) | SMLS | 0 | 22% |
Outside Diameter Tolerance of ASTM A179
| Seamless, Cold-Finished Tubes | Type | Permissible Variations In mm | |
| OD Range | Under(-) | Over(+) | |
| 0~25.4mm (Incl.) | SMLS | 0.1mm | 0.1mm |
| 25.4~38.1mm (Incl.) | SMLS | 0.15mm | 0.15mm |
| 38.1~50.8mm (Incl.) | SMLS | 0.2mm | 0.2mm |
| 50.8~63.5mm (Incl.) | SMLS | 0.25mm | 0.25mm |
| 63.5~76.2mm (Incl.) | SMLS | 0.3mm | 0.3mm |
