| Standard: | ASTM A335， ASME SA335 | Material Grade: | P11， P12， P22， P5， P9， P91， 11Cr， 13Cr |
|---|---|---|---|
| Fin Material: | Aluminum，Copper，carbon Steel，stainless Steel | Fin Height: | 0-17mm |
| Tube Length: | 18 Meters Max | Fin Pitch: | 2-14mm |
| Length: | 1000mm-6000mm Or As Customized | Application: | Heater Parts，Refrigeration Parts，heat Exchanger，Cooler，Fluid Cooling |
| High Light: | P9 Alloy Steel Serrated Fin Tubes， 11Cr Serrated Fin Tube， Heat Exchanger Tube ASTM A335 | ||
ASTM A335 Gr. P9 Alloy Steel Tube With 11Cr Fins， Serrated Finned Tubes For Fire Furnace
ASTM A335 Gr.P9 is a specification for seamless ferritic alloy-steel pipe designed for high-temperature service. It is widely used in power plants， refineries， and other high temperature and high pressure applications. The Gr.P9 composition offers excellent resistance to oxidation and high-temperature strength. A fin tube is a heat transfer surface consisting of a base tube with fins wrapped around its outer surface. The fins increase the surface area of the tube， facilitating enhanced heat transfer.
The ASTM A335 Gr.P9 is composed of chemical composition of 8-10% chromium， 0.25-1% silicon and 0.9-1.1% molybdenum. It also has small amoun of carbon， manganese， phosphorous， and sulfur. The A335 P9 material is highly corrosion and oxidation resistant. They perform well under extreme pressures and high temperatures. The ASTM A335 Gr.P9 Alloy is suitable for bending， flanging， and all forming operations.
Features:
Enhanced heat transfer efficiency
High-temperature resistance
Corrosion resistance
Reduced energy consumption
Specification:
| Specification | ASTM A335， ASME SA335 |
| Outer Diameter Size | 1/8" To 30" |
| Wall Thickness | Sch 10S To Sch XXS |
| Length | Standard length， Double length & In Cut length |
| Pipe Ends | Plain Ends / Beveled Ends / threaded Ends/ Coupling |
Chemical Composition:
| Grade | C | Mn | P | S | Si | Cr | Mo |
| P9 | 0.15 max | 0.3-0.6 | ≤0.025 | ≤0.025 | 0.25-1 | 8-10 | 0.9-1.1 |
Mechanical Properties:
| Grade | Tensile | Yield | Elongation | Hardness， max |
| Strength (Mpa)， min | Strength (Mpa)， min | (%) | ||
| P9 | 585 | 415 | 30 | 25HRC |
Applications:
Boilers
Condensers
Heat Exchangers
Water Supply Systems
Oil and Gas Industry
Fabrication Industry
High temperature Equipments
