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Alloy Steel Seamless Pipe, ASME SA335 P9, Solid Fin Tube, For HRSG System

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Alloy Steel Seamless Pipe, ASME SA335 P9, Solid Fin Tube, For HRSG System

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Brand Name :	Yuhong
Model Number :	ASME SA335 P9
Certification :	ABS, BV, CCS, DNV, LR
Price :	Negotiable
Payment Terms :	L/C,T/T
Supply Ability :	1000 tons per month
Delivery Time :	According to QTY

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Alloy Steel Seamless Pipe, ASME SA335 P9, Solid Fin Tube, For HRSG System

Alloy Steel Seamless Pipe, ASME SA335 P9, Solid Fin Tube, For HRSG System

Product Overview

ASME SA335 P9 Solid Fin Tube is fabricated using ferritic alloy steel seamless pipe, with solid fins made of carbon or alloy steel welded by High Frequency Welding (HFW). These finned tubes are specially designed for Heat Recovery Steam Generator (HRSG) systems in combined-cycle power plants, offering superior performance under high temperature and pressure conditions.

Chemical Composition – ASME SA335 P9

Element	Content (%)
C	0.15 – 0.25
Mn	0.30 – 0.60
P	≤ 0.025
S	≤ 0.025
Si	0.50 – 1.00
Cr	8.00 – 10.00
Mo	0.90 – 1.10

Mechanical Properties – ASME SA335 P9

Property	Value
Tensile Strength	≥ 415 MPa
Yield Strength	≥ 205 MPa
Elongation	≥ 30%
Working Temp.	Up to 600–620°C
Pressure Rating	High pressure suitability

Advantages

High Temperature Resistance
Chromium-Molybdenum composition ensures stability at elevated temperatures.
Enhanced Heat Transfer
Solid fin design increases external surface area, improving energy recovery in HRSGs.
High Strength Under Pressure
Alloy steel withstands thermal cycling and high-pressure steam environments.
Corrosion & Oxidation Resistance
Excellent resistance to oxidation and scaling in boiler exhaust gas atmospheres.
Long Service Life
Reliable performance over extended operation cycles in harsh boiler conditions.

Applications

Used primarily in Heat Recovery Steam Generator (HRSG) systems, especially in:

Combined-Cycle Power Plants
Gas Turbine Exhaust Recovery
Waste Heat Boilers
Superheater and Reheater Sections
Industrial Steam Recovery Units

Typically installed in superheater, reheater, or evaporator sections of HRSGs where high thermal efficiency and long operational life are required.

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