ASTM A335 P22 High Frequency Welding Fin Tube Cooling Systems
| Attribute | Value |
|---|---|
| Base Tube Material Grade | P22 |
| Base Tube Material Standard | ASTM A335, ASME SA335 |
| Type | High Frequency Welding |
| Application | Furnace Tube, Tube Coil, Radiate Tube, Convenction Tube, Fired Heater |
| Fin Type | Serrated Fins |
| Fin Material | Carbon Steel, Stainless Steel, Alloy Steel |
ASTM A335 P22 High Frequency Welding Fin Tube, Cooling Systems
ASTM A335 P22 tubes are manufactured from P22 steel, a chromium-molybdenum (Cr-Mo) alloy steel specifically engineered for high-temperature applications. Containing approximately 2.25% chromium and 1% molybdenum, this material offers superior resistance to creep, oxidation, and corrosion at elevated temperatures, making it ideal for pressure vessels, steam boilers, and other high-temperature systems.
ASTM A335 is the standard specification for seamless ferritic alloy-steel pipe used in high-temperature service. The P22 grade is commonly employed in power plants and chemical processing industries where materials must endure both extreme temperatures and pressures.
| Grade | C | Mn | P | S | Si | Cr | Mo |
|---|---|---|---|---|---|---|---|
| ASTM A335 P22 | 0.05 - 0.15% | 0.30 - 0.60% | Max. 0.025% | Max. 0.025% | 0.50% (Max) | 1.90 - 2.60% | 0.87 - 1.13% |
| Grade | Tensile Strength | Yield Strength | Elongation | Hardness |
|---|---|---|---|---|
| ASTM A335 P22 | Min. 415 MPa (60,200 psi) | Min. 205 MPa (29,700 psi) | Min. 35% (in 2 inches) | Max. 250 HB / 25 HRC |
- High Thermal Efficiency: Serrated fin design disrupts the boundary layer for enhanced heat transfer
- Corrosion Resistance: Optional coatings available for improved environmental resistance
- Durability: Engineered to withstand harsh operating conditions including high temperatures, pressures, and corrosive environments
- Boilers
- Heat Exchangers
- Superheaters
- Economizers
- Power Plants
- Petrochemical Plants
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