logo

Yuhong Holding Group Co.,LTD
English

Home
Products
About Us
Factory Tour
Quality Control
Contact Us
Request A Quote
Company News
Home ProductsFin Tube

ASTM A335 P22 Alloy Steel Seamless Tube With 11-13CR HFW Fin Tube For Convection Coil

ASTM A335 P22 Alloy Steel Seamless Tube With 11-13CR HFW Fin Tube For Convection Coil

  • ASTM A335 P22 Alloy Steel Seamless Tube With 11-13CR HFW Fin Tube For Convection Coil
  • ASTM A335 P22 Alloy Steel Seamless Tube With 11-13CR HFW Fin Tube For Convection Coil
  • ASTM A335 P22 Alloy Steel Seamless Tube With 11-13CR HFW Fin Tube For Convection Coil
  • ASTM A335 P22 Alloy Steel Seamless Tube With 11-13CR HFW Fin Tube For Convection Coil
ASTM A335 P22 Alloy Steel Seamless Tube With 11-13CR HFW Fin Tube For Convection Coil
Product Details:
Place of Origin: China
Brand Name: yuhonng
Certification: ABS,CCS,BV, LR, DNV, PED
Model Number: ASTM A335 P22
Payment & Shipping Terms:
Minimum Order Quantity: 100kgs
Price: Negotiable
Packaging Details: Ply-Wooden Packing with iron frame
Delivery Time: 7 days
Payment Terms: T/T,L/C
Contact Now
All Products
Stainless Steel Seamless Pipe (277)
Stainless Steel Seamless Tube (269)
Duplex Stainless Steel Pipe (128)
Duplex Stainless Steel Tube (27)
Needle Tube (86)
Fin Tube (596)
Heat Exchanger (10)
Heat Exchanger Tube (419)
Heat Exchanger Tube Bundle (37)
Heat Exchanger Tubesheet (117)
Heat Exchanger Baffle (35)
Air Cooler (7)
Pressure Vessel (2)
Stainless Steel Welded Pipe (57)
Stainless Steel Welded Tube (113)
Nickel Alloy Pipe (258)
Nickel Alloy Tube (75)
Copper Alloy Tube (210)
Alloy Steel Tube (173)
Titanium Tube (9)
Bright Annealed Tube (153)
Boiler Tube (138)
Steel Fitting (784)
Steel Flange (574)
Others (384)
Detailed Product Description
Surface Treatment: Plain, Polished, Coated, Etc. Material: Alloy Steel, Stainless Steel, Carbon Steel, Etc.
Fin Pitch: 2mm-20mm Advantages: High Efficiency, Compact Design, Cost-effective
Size: Customized Application: Heat Exchangers, Air Conditioning, Refrigeration, Etc.
Highlight:

11-13CR Alloy Steel Seamless Tube

,

Convection Coil Alloy Steel Seamless Tube

,

HFW Alloy Steel Seamless Tube

ASTM A335 P22 Alloy Steel Seamless Tube With 11-13CR, HFW Fin Tube, For Convection Coil


1. Product Overview

The ASTM A335 P22 Alloy Steel Seamless Tube with 11-13% Chromium (Cr) HFW Fin Tube is engineered for high-efficiency heat transfer in extreme temperature and pressure environments. Combining the high-temperature strength of P22 alloy steel with the corrosion resistance of chromium-rich fins, this product is ideal for convection coils in boilers, heaters, and industrial thermal systems.


2. Material Standards & Chemical Composition

Base Tube: ASTM A335 P22 Alloy Steel
Element Composition (wt%) Standard Requirements
Carbon (C) 0.05–0.15 ASTM A335
Chromium (Cr) 1.90–2.60
Molybdenum (Mo) 0.87–1.13
Manganese (Mn) 0.30–0.60
Silicon (Si) 0.50 max
Phosphorus (P) 0.025 max
Sulfur (S) 0.025 max
Fin Strip: 11-13% Chromium Steel
Element Composition (wt%) Key Role
Chromium (Cr) 11.00–13.00 Enhances oxidation & corrosion resistance
Carbon (C) 0.08–0.15 Balances strength & weldability
Nickel (Ni) ≤0.50 Improves toughness
Manganese (Mn) 0.30–0.60 Supports hardenability


3. Mechanical Properties

Parameter ASTM A335 P22 Base Tube 11-13Cr Fin Strip
Tensile Strength (MPa) ≥415 450–600
Yield Strength (MPa) ≥205 ≥250
Elongation (% in 50 mm) ≥30 ≥20
Hardness (HBW) ≤187 ≤230
Max Operating Temperature (°C) 650 550 (continuous service)


4. Key Advantages

  1. High-Temperature Durability

    • P22 alloy steel withstands temperatures up to 650°C with superior creep resistance, ideal for superheaters and reformers.

    • Chromium fins resist oxidation in flue gas and acidic environments.

  2. Corrosion & Sulfidation Resistance

    • 11-13Cr fins prevent sulfidation cracking in sulfur-rich atmospheres (e.g., refinery heaters).

  3. Optimized Heat Transfer

    • HFW fins increase heat exchange surface area by 4–6x, enhancing efficiency while maintaining low pressure drop.

  4. Robust Welding Quality

    • High-frequency welding ensures fin-to-tube bond strength ≥85% of base metal, validated by shear testing.

  5. Cost-Effective Solution

    • Combines the high-temperature performance of P22 with the corrosion resistance of Cr steel, reducing downtime and maintenance costs.


5. Manufacturing & Quality Control

  1. Base Tube Production

    • Seamless manufacturing via hot extrusion or rotary piercing, compliant with ASTM A335.

    • Heat treatment: Normalized at 900–940°C, tempered at 690–730°C for optimal microstructure.

  2. Fin Welding Process

    • HFW fin attachment: Welding speed 8–25 m/min, frequency 200–450 kHz.

    • Post-weld stress relief (PWHT) at 600–650°C to eliminate residual stresses.

  3. Testing & Certification

    • Non-Destructive Testing (NDT): 100% UT/RT on base tube; PT/MT on welds.

    • Hydrostatic Testing: 1.5x design pressure (ASME B31.1 compliant).

    • Certificates: ASME Section II, EN 10204 3.1, and PED 2014/68/EU.


6. Applications

Industry Use Cases
Power Generation Boiler convection sections, superheaters, and economizers in coal/gas plants.
Petrochemical Cracking furnaces, hydroprocessing heaters, and sulfur recovery units.
Industrial Heating Thermal fluid heaters, waste heat recovery coils, and process air preheaters.
Chemical Processing High-temperature reactors and reformer tubes in ammonia/methanol plants.


7. Comparison with Alternatives

Feature ASTM A335 P22 + 11-13Cr HFW Fin Tube Carbon Steel Fin Tube Stainless Steel 321 Fin Tube
Max Temperature (°C) 650 400 850
Sulfidation Resistance Excellent (Cr-enhanced) Poor Moderate
Cost Moderate Low High
Typical Lifespan 12–18 years 5–8 years 15–25 years

ASTM A335 P22 Alloy Steel Seamless Tube With 11-13CR HFW Fin Tube For Convection Coil 0

Tag:

finned copper tube,

heat exchanger fin tube,

extruded finned tube

Contact Details
Yuhong Group Co.,Ltd

Contact Person: Sia Zhen

Tel: 15058202544

Fax: 0086-574-88017980

Send your inquiry directly to us (0 / 3000)

Connect online
Sitemap
Products
Home
Privacy Policy | China Good Quality Stainless Steel Seamless Pipe Supplier.
© 2013 - 2025 steelseamlesspipe.com. All Rights Reserved.

20TH FLOOR,NO.1 NEW WORLD BUILDING ,NO.1018 MINAN ROAD,YINZHOU DISTRICT, NINGBO CITY, ZHEJIANG PROVINCE, CHINA

jikin@steelseamlesspipe.com；jikin888@foxmail.com

Mobile Site

Want to know more about us ？ Just contact us