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| Brand Name: | YuHong |
| Model Number: | ASME SA335 P9 Studded Finned Tube with AS Studs |
| MOQ: | 200 KGS |
| Price: | Negotiable |
| Payment Terms: | T/T, L/C AT SIGHT |
| Supply Ability: | According to Clients' requirements |
| Attribute | Value |
|---|---|
| Product Name | Studded Tube / Studded Finned Tube |
| Base Tube Specification & Material | ASME SA335 P9 |
| Fin material | Alloy Steel |
| Base Tube O.D. | 25-219 mm |
| Fin O.D. | 5~20 mm |
| Fin Height | 5~35 mm |
| Fin Pitch | 8~30 mm |
| Processing method | Welding |
| Application Industries | Petrochemical and Refinery; Power Generation; HVAC systems and so on |
A studded finned tube is a type of heat exchanger tube that has been enhanced with studs to improve its ability to transfer heat between two mediums, typically fluids and gases. The presence of studs increases the surface area without significantly enlarging the footprint of the tube. The increased surface area allows for more efficient heat transfer, since there is more material available to absorb heat from the hot medium and transfer it to the cooler one.
The studs are usually arranged in a uniform pattern and are welded to the outside of the tube. In heat exchangers, the fluid runs through the tube while the gas flows around the outside, passing over the studs. As the gas transfers its heat to the studs, the heat is then conducted into the tube and to the fluid inside.
| Element | Composition Range (%) |
|---|---|
| Carbon (C) | 0.15 max |
| Manganese (Mn) | 0.30 - 0.60 |
| Phosphorus (P) | 0.025 max |
| Sulfur (S) | 0.025 max |
| Silicon (Si) | 0.25 - 1.00 |
| Chromium (Cr) | 8.00 - 10.00 |
| Molybdenum (Mo) | 0.90 - 1.10 |
| Nickel (Ni) | 0.40 max (optional) |
| Vanadium (V) | 0.18 max (optional) |
| Iron (Fe) | Balance |
Notes: The 9% Cr-1% Mo composition provides high-temperature strength and oxidation resistance. Low carbon content helps with weldability.
| Property | Value |
|---|---|
| Tensile Strength (min) | 415 MPa (60,000 psi) |
| Yield Strength (min) | 205 MPa (30,000 psi) |
| Elongation (min, % in 50mm) | 30% |
| Hardness (max, Brinell HBW) | 179 HBW |
| Impact Toughness (Charpy V-Notch, min at 21°C) | Typically required (varies by spec) |
Notes:
Instead of helical fins, this tube has alloy steel studs welded radially onto the outer surface.
