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ASTM A335 Gr. P9 Studded Fin Tubes for Cracking Furnaces
ASTM A335 Gr. P9 Studded Fin Tubes for Cracking Furnaces
ASTM A335 Gr. P9 Studded Fin Tubes for Cracking Furnaces
ASTM A335 Gr. P9 Studded Fin Tubes for Cracking Furnaces
ASTM A335 Gr. P9 Studded Fin Tubes for Cracking Furnaces
ASTM A335 Gr. P9 Studded Fin Tubes for Cracking Furnaces
Specifications
Supply Ability :
5000 meters/day
Product :
Studded Fin Tube
Model Number :
N/A
Package :
Iron frame wooden case
MOQ :
500kgs
Delivery Time :
50-120 days
Payment Terms :
T/T,L/C
Material :
ASTM A335 GR.P9
Price :
To be discussed
Application :
Ethylene Cracking Furnaces, Petrochemical Fired Heaters, Refinery Process Heaters, Convection Sections of Process Furnaces
Brand Name :
YUHONG
Certification :
ISO9001:2015; ISO14001:2015; ISO45001:2018; PED 2014/68/EU; WPS/PQR/WPQ; ISO 3834
Place of Origin :
China
Packaging Details :
Iron frame wooden case
Description
ASTM A335 Gr. P9 Studded Fin Tubes for Cracking Furnaces

ASTM A335 Gr. P9 Studded Fin Tubes are designed for high-temperature heat transfer applications in cracking furnaces, where excellent resistance to oxidation, creep, and thermal fatigue is essential. Manufactured from 9Cr-1Mo alloy steel seamless tubes, these studded fin tubes provide an enlarged external heat transfer surface while maintaining outstanding mechanical integrity under prolonged exposure to elevated temperatures.

The welded studs significantly improve heat absorption from high-temperature flue gases, making the tubes suitable for convection sections of ethylene cracking furnaces, petrochemical heaters, and other demanding thermal processing equipment. ASTM A335 Gr. P9 offers superior high-temperature performance compared with conventional carbon steel materials, ensuring longer service life and improved operational reliability.

Features
  • Manufactured from ASTM A335 Gr. P9 seamless alloy steel tubes
  • Excellent creep strength at elevated temperatures
  • Superior oxidation and scaling resistance
  • Enhanced heat transfer efficiency through welded studs
  • Suitable for continuous high-temperature operation
  • High structural stability under cyclic thermal loading
  • Available in customized stud dimensions and tube configurations
  • Manufactured according to ASME, ASTM, and customer specifications
Typical Applications

ASTM A335 Gr. P9 Studded Fin Tubes are widely used in high-temperature industrial heating equipment, including:

  • Ethylene Cracking Furnaces
  • Petrochemical Fired Heaters
  • Refinery Process Heaters
  • Convection Sections of Process Furnaces
  • Waste Heat Recovery Boilers
  • Process Gas Heating Systems
  • High-Temperature Heat Exchangers
  • Steam Reforming Furnaces
  • Hydrogen Production Units
  • Chemical Processing Plants
Dimensional Range
Parameter Standard Range
Base Tube OD 25.4–168.3 mm (1"–6")
Base Tube Wall Thickness 2.77–12.70 mm
Tube Length Up to 18,000 mm
Stud Diameter 6–20 mm
Stud Height 10–35 mm
Stud Pitch 8–30 mm
Stud Material Carbon Steel, Alloy Steel, Stainless Steel (according to application)
Manufacturing Standard ASTM A335 / ASME SA335 / Customer Drawings
Chemical Composition of ASTM A335 Gr. P9
Element Content (%)
Carbon (C) 0.15 Max
Manganese (Mn) 0.30–0.60
Phosphorus (P) 0.025 Max
Sulfur (S) 0.025 Max
Silicon (Si) 0.25–1.00
Chromium (Cr) 8.00–10.00
Molybdenum (Mo) 0.90–1.10
Mechanical Properties of ASTM A335 Gr. P9
Property Value
Tensile Strength ≥ 415 MPa
Yield Strength ≥ 205 MPa
Elongation ≥ 20%


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ASTM A335 Gr. P9 Studded Fin Tubes for Cracking Furnaces

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Product Detail
Supply Ability :
5000 meters/day
Product :
Studded Fin Tube
Model Number :
N/A
Package :
Iron frame wooden case
MOQ :
500kgs
Delivery Time :
50-120 days
Contact Supplier
ASTM A335 Gr. P9 Studded Fin Tubes for Cracking Furnaces
ASTM A335 Gr. P9 Studded Fin Tubes for Cracking Furnaces
ASTM A335 Gr. P9 Studded Fin Tubes for Cracking Furnaces

YUHONG HOLDING GROUP CO., LTD

Verified Supplier
3 Years
ningbo
Since 1990
Business Type :
Manufacturer, Importer, Exporter, Trading Company, Seller, Other
Main Products :
Stainless Steel Heat Exchanger Tube, Studded Tube, Duplex Stainless Steel Heat Exchanger Tube
Total Annual :
50M-70M
Employee Number :
50~800
Certification Level :
Verified Supplier
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