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Seamless Boiler Tube ASTM A335 P9 , Alloy Steel , Power Generation , Industrial Boiler

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Seamless Boiler Tube ASTM A335 P9 , Alloy Steel , Power Generation , Industrial Boiler

Brand Name:	Yuhong
Model Number:	Boiler Tube
MOQ:	1 PC
Price:	Negotiable
Packaging Details:	Ply-Wooden Case + Iron Frame
Payment Terms:	TT, LC

Detail Information

Product Description

Ratings & Reviews

Detail Information

Place of Origin:

China

Certification:

ABS, BV, DNV, CCS, LR

Material Grade:

A335 P9

Standard:

ASTM A335 , ASME SA335

External Diameter:

>38.1

Ends:

PE , BE

Tube Material:

Nickel Alloy , Alloy , Stainless Steel , Duplex Stainless Steel , Carbon

Application:

Boiler

Supply Ability:

10000 Tons/Month

Highlight:

Alloy Steel Boiler Tube ASTM A335

Power Generation Alloy Steel Boiler Tube

Chemical Industrial Boiler tube

Product Description

Seamless Boiler Tube ASTM A335 P9 , Alloy Steel , Power Generation , Industrial Boiler

Grade A335 P9 is a specification for seamless ferritic alloy-steel pipe for high-temperature service. It is commonly used in applications that require high strength and resistance to oxidation and corrosion at elevated temperatures.

ASTM A335 P9 seamless boiler tubes are particularly effective in the power generation, petrochemical, chemical processing, industrial boiler, oil and gas, and marine industries. Their ability to withstand high temperatures and corrosive environments ensures long-term reliability and efficiency in demanding applications.

Chemical Composition:

Grade	Cr	Mo	C	Mn	P	S	Si	Ni	Fe
A335 P9	8.0-10.0%	0.9-1.10%	0.15% maximum	0.30-0.60%	≤ 0.25%	≤ 0.25%	0.50% maximum	≤ 0.4%	Balance

Mechanical Properties:

Grade

Tensile Strength

Yield Strength

Elongation

Hardness

A335 P9

Minimum 415 MPa (60,200 psi)

Minimum 220 MPa (31,900 psi)

30% minimum in

50 mm

≤ 85 HRB

(Rockwell Hardness B)

Key Features:

High-Temperature Strength: Excellent mechanical properties at elevated temperatures.
Oxidation Resistance: Superior resistance to oxidation in high-temperature environments.
Creep Resistance: High resistance to creep, making it suitable for long-term exposure to high temperatures.
Durability: High tensile strength ensures durability in demanding applications.
Weldability: Good weldability, allowing for easy fabrication and repair.

Applications:

1. Industrial Boilers

Heating Systems: Utilized in industrial heating systems, including boilers and furnaces, where high-pressure steam or hot water is generated.
Process Piping: Suitable for high-temperature process piping in various industrial applications.
Superheaters: Used in superheater tubes exposed to high temperatures and pressures.

2. Power Generation Industry

Boilers: Used in the construction of boilers for power plants, especially for high-pressure and high-temperature steam generation.
Superheaters: Ideal for superheater tubes that need to withstand high temperatures and pressures.
Steam Pipes: Utilized in steam piping systems that operate at high temperatures and pressures.

3. Chemical Processing Industry

Reactors and Vessels: Ideal for reactors and pressure vessels exposed to high temperatures and aggressive chemicals.
Piping Systems: Suitable for high-temperature and high-pressure piping systems transporting steam and hot fluids.
Heat Recovery Systems: Used in heat recovery systems that utilize high-temperature steam.

Seamless Boiler Tube ASTM A335 P9 , Alloy Steel , Power Generation , Industrial Boiler 0

Ratings & Review

Overall Rating

4.7

Based on 50 reviews for this supplier

Rating Snapshot

The following is the distribution of all ratings

5 stars

67%

4 stars

33%

3 stars

2 stars

1 stars

All Reviews

Kenneth Tan

Singapore Feb 25.2026

Helpful (3)

With our humidity and year-round high temps, corrosion resistance and heat transfer are always a concern. These tubes have been performing nicely.

Sajid

Pakistan Jan 12.2026

Helpful (4)

Tube ends were clean, dimensions accurate. Our fitters didn't complain about fit-up.

Rashid

United Arab Emirates Dec 10.2025

Helpful (2)

Good oxidation resistance, matches well with the T9. No scaling or thinning noticed.

Tags:

Studded Tube

Solid Fin Tube

Serrated Finned tube

Embedded G Fin Tube

Extruded Fin Tube

Wound Fin Tube

Low Fin Tube

Square Fin Tube

Longitudinal Finned Tube

Enhanced Heat Transfer Tube

Fin Tube Support

Return Bend

Heat Exchanger Tube

Stainless Steel Heat Exchanger Tube

Duplex Stainless Steel Heat Exchanger Tube

Super Duplex Stainless Steel Heat Exchanger Tube

Nickel Alloy Steel Heat Exchanger Tube

Copper Alloy Steel Heat Exchanger Tube

Titanium Alloy Steel Heat Exchanger Tube

Alloy Steel Heat Exchanger Tube

U Bend Heat Exchanger Tube

Carbon Steel Heat Exchanger Tubes

Boiler Tube

Nickel Alloy Steel Boiler Tube

Stainless Steel Boiler Tube

Duplex Stainless Steel Boiler Tube

Alloy Steel Boiler Tube

Carbon Steel Boiler Tube

Fired Heater Parts

Baffle Plate

Tubesheet

Studded Tube

Solid Fin Tube

Serrated Finned tube

Embedded G Fin Tube

Extruded Fin Tube

Wound Fin Tube

Low Fin Tube

Square Fin Tube

Longitudinal Finned Tube

Enhanced Heat Transfer Tube

Fin Tube Support

Return Bend

Heat Exchanger Tube

Stainless Steel Heat Exchanger Tube

Duplex Stainless Steel Heat Exchanger Tube

Super Duplex Stainless Steel Heat Exchanger Tube

Nickel Alloy Steel Heat Exchanger Tube

Copper Alloy Steel Heat Exchanger Tube

Titanium Alloy Steel Heat Exchanger Tube

Alloy Steel Heat Exchanger Tube

U Bend Heat Exchanger Tube

Carbon Steel Heat Exchanger Tubes

Boiler Tube

Nickel Alloy Steel Boiler Tube

Stainless Steel Boiler Tube

Duplex Stainless Steel Boiler Tube

Alloy Steel Boiler Tube

Carbon Steel Boiler Tube

Fired Heater Parts

Baffle Plate

Tubesheet

products details

Studded Tube

Solid Fin Tube

Serrated Finned tube

Embedded G Fin Tube

Extruded Fin Tube

Wound Fin Tube

Low Fin Tube

Square Fin Tube

Longitudinal Finned Tube

Enhanced Heat Transfer Tube

Fin Tube Support

Return Bend

Heat Exchanger Tube

Stainless Steel Heat Exchanger Tube

Duplex Stainless Steel Heat Exchanger Tube

Super Duplex Stainless Steel Heat Exchanger Tube

Nickel Alloy Steel Heat Exchanger Tube