Sign In | Join Free | My qualitytoyschina.com |
|
Brand Name : Yuhong
Model Number : ASTM A335 P22
Certification : ABS, BV, DNV, CCS, LR
Place of Origin : China
MOQ : 100kgs
Price : Negotiable
Payment Terms : TT, LC
Delivery Time : 7days
Packaging Details : plastic woven bags, ply-wooden case with iron steel case
Base Pipe Material : P9, P22
Application : Boiler, Economizer
Length : Max.: 34m/pc
Welding Type : HFW , serrated
Production Process : Cold Drawn
Fin Wall Thickness : 0.8-3mm
Fin Material Grade : 11Cr
Fin Thick : 0.8mm-3mm
The ASTM A335 P22 HFW Fin Tube is a high-temperature alloy steel tube with high frequency welded (HFW) fins, designed for use in industrial furnaces, heaters, and boilers. The P22 alloy offers superior thermal strength, oxidation resistance, and creep resistance, making it suitable for continuous operation under extreme heat and pressure.
Element | Composition (%) |
---|---|
Carbon (C) | 0.05–0.15 |
Manganese (Mn) | 0.30–0.60 |
Phosphorus (P) | ≤ 0.025 |
Sulfur (S) | ≤ 0.025 |
Chromium (Cr) | 1.90–2.60 |
Molybdenum (Mo) | 0.87–1.13 |
Element | Composition (%) |
---|---|
Chromium (Cr) | 11.0–13.0 |
Carbon (C) | ≤ 0.08 |
Manganese (Mn) | ≤ 1.0 |
Silicon (Si) | ≤ 1.0 |
Phosphorus (P) | ≤ 0.040 |
Sulfur (S) | ≤ 0.030 |
Property | Value |
---|---|
Tensile Strength | ≥ 415 MPa |
Yield Strength | ≥ 205 MPa |
Elongation | ≥ 30% |
Hardness | ≤ 163 HB |
Property | Value |
---|---|
Tensile Strength | Approx. 450–600 MPa |
Yield Strength | Approx. 250–350 MPa |
Hardness | 150–180 HB |
Heat Resistance | Up to 600°C (continuous) |
Superior heat transfer performance for high-temperature gas environments.
High mechanical strength and creep resistance for prolonged service at elevated temperatures.
Excellent weldability and structural stability due to the seamless tube and HFW fin bonding.
Corrosion and oxidation resistance ensures durability in aggressive heating environments.
Location: The upper part of the furnace, after the radiant section.
Function: This section uses convection heat transfer from hot flue gases to heat up the working fluid (such as steam, oil, or gas) inside the finned tubes.
Why P22 Fin Tubes:
High thermal conductivity of fins increases surface area → better heat transfer.
Alloy P22 resists thermal stress, oxidation, and creep, making it ideal for continuous high-temperature exposure.
Conditionally, if the radiant section has lower radiant intensity or is partially shielded, these fin tubes may also be used here to recover radiant + convective heat.
![]() |
Alloy Steel Seamless Tube ASTM A335 P22 HFW Fin Tube For Furnace And Heater Images |