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ASTM A335 P22 Alloy Steel Seamless Tube High Frequency Welding Fin Tube For Furnace

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ASTM A335 P22 Alloy Steel Seamless Tube High Frequency Welding Fin Tube For Furnace

Brand Name : Yuhong

Model Number : ASTM A335 P22

Certification : ABS,BV, DNV, LR, CCS, PED

Place of Origin : China

MOQ : 100kgs

Price : Negotiable

Payment Terms : L/C,T/T

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 , GMAW, LASER

Production Process : Cold Drawn

Fin Wall Thickness : 0.8-3mm

Fin Material Grade : 11Cr

Fin Thick : 0.8mm-3mm

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ASTM A335 P22 Alloy Steel Seamless Tube High Frequency Welding Fin Tube For Economizer


Product Overview

The ASTM A335 P22 High Frequency Welding (HFW) Fin Tube is manufactured by helically or longitudinally welding alloy fin strips onto a seamless P22 alloy steel base tube using high-frequency resistance welding. This finned tube is specifically designed for furnace and radiant coil applications, where high-temperature strength, pressure resistance, and thermal efficiency are crucial.


Chemical Composition

Base Tube – ASTM A335 P22

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

Fin Material – 11-13Cr Strip

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

Mechanical Properties

Base Tube – ASTM A335 P22

Property Value
Tensile Strength ≥ 415 MPa
Yield Strength ≥ 205 MPa
Elongation ≥ 30%
Hardness ≤ 163 HB

Fin Material (Typical)

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)


Advantages

  • High Temperature Resistance: P22 material and high-chromium fin strip allow operation in up to 600–650°C.

  • Reliable Fin Bonding: HFW technology ensures strong metallurgical bond, minimizing thermal resistance and improving efficiency.

  • Oxidation and Scaling Resistance: Ideal for direct flame and high-flue gas environments.

  • Enhanced Heat Transfer: Fins increase surface area and promote turbulence, improving heat exchange rate inside the furnace.

  • Long Service Life: Resistant to thermal fatigue and corrosion, reducing maintenance frequency in demanding operations.

Applications

  • Power Plant Furnaces (Radiant Section)

  • Waste Heat Recovery Furnaces

  • Industrial Steam Generators

  • Petrochemical Process Heaters

  • Coal-Fired and Biomass-Fired Boilers

  • High-Pressure Radiator and Convection Coils

ASTM A335 P22 Alloy Steel Seamless Tube High Frequency Welding Fin Tube For Furnace


Product Tags:

Furnace Alloy Steel Seamless Tube

      

High Frequency Welding Fin Tube

      

ASTM A335 P22 alloy steel tube

      
Wholesale ASTM A335 P22 Alloy Steel Seamless Tube High Frequency Welding Fin Tube For Furnace from china suppliers

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