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ASME SA335 P9 Alloy Steel HFW Solid Finned Tube With Carbon Fin For Heat Exchangers

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Ms. April Xiang

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ASME SA335 P9 Alloy Steel HFW Solid Finned Tube With Carbon Fin For Heat Exchangers

Brand Name:	YUHONG
MOQ:	200-500KGS
Price:	Negotiable
Packaging Details:	Ply-wooden Cases with Steel Frames(both ends of pipes have plastic caps）
Payment Terms:	L/C,T/T,AT SIGHT

Detail Information

Product Description

Ratings & Reviews

Detail Information

Place of Origin:

China

Certification:

ABS, BV, ISO, ASTM, SGS

Bare Tube Diameter:

16-219MM

Bare Tube Specification&Material:

ASME SA335 P9

Fin Pitch:

3-25MM

Fin Height:

5-30MM

Fin Thick:

0.8-3MM

Application:

Power Plant, Air Preheaters, Boiler, Heat Exchangers, Refrigeration And Air Conditioning Systems

Supply Ability:

According to Clients' requirements

Highlight:

SA335 Solid Finned Tube

Alloy Steel Solid Finned Tube

Product Description

1.What is ASME SA335 P9 Alloy Steel HFW Solid Finned Tube with Carbon Fin?

ASME SA335 P9 HFW Solid Finned Tube with Carbon Fin is a high-temperature solution engineered for sulfur-rich environments. It combines a seamless chromium-molybdenum alloy steel base tube (ASME SA335 P9) with helically wound solid carbon steel fins bonded via high-frequency welding (HFW). This robust design delivers exceptional resistance to sulfidation and oxidation up to 600°C (1,112°F), making it ideal for refinery heaters, coker units, and high-sulfur flue gas applications.

2.Chemical & Mechanical Properties

Dimensional Specifications:

Base Tube O.D:15.88–325 mm

Fin Height::

6–50.8 mm

Fin Thickness:

0.8–3.0 mm

Fin Pitch: As Customer’s Request

Tube Ends: Plain Ends / Beveled Ends

No Fin Area (Both Ends): As Customer’s Request And Drawing

Chemical Composition (%)

SA335 P9 Base Tube Chemical Composition (%)
Element	C	Mn	P	S	Si	Cr	Mo	Others
Range	≤0.15	0.30~0.60	≤0.025	≤0.025	0.50~1.00	8.00~10.00	0.90~1.10	Balance (Fe)

Mechanical Properties

Property	SA335 P9 Base Tube	Carbon Steel Fin
Tensile Strength	≥ 415 MPa	≥ 400 MPa
Yield Strength	≥ 205 MPa	≥ 250 MPa
Elongation	≥ 30%	≥ 23%
Hardness	≤ 179 HB	≤ 150 HB
Max Service Temp.	600°C (1,112°F)	400°C (752°F)
Sulfidation Resistance	★★★★★ (Per NACE RP0472)	★★☆

3.Key Applications

· Refinery Heaters: Convection sections in crude/vacuum distillation units.

· Delayed Cokers: Transfer line exchangers handling 500°C+ vapors.

· Coal-Fired Plants: Economizers for high-sulfur flue gas (SO₂ > 3,000 ppm).

· Chemical Processing: Sulfuric acid regeneration heaters.

· Petrochemical: Hydrogen reformer effluent boilers.

4.Why Choose ASME SA335 P9 Alloy Steel HFW Solid Finned Tube :

A:Company Competitiveness:

Yuhong Holding Group has more than 35 years experience for steel pipe and tube , fin tube , main application for Petrochemical , Oil refinary, Furnace, heating, boiler, heat exchanger, air cooler,.., till now YUHONG brand products already exported more than 85 countries, which like UK, ITALY, SPAIN , USA, MEXICO , COLOMBIA , BRAZIL, SAUDI ARANBIA , OMAN, QATAR, U.A.E, KOREA, ...., YUHONG brand already won good reputation in the market.

B:Product Competitiveness:

· 5X Sulfidation Life: Outperforms carbon steel tubes per API RP939-C.
· Zero Fin Detachment: HFW ensures >120 MPa bond strength (AWS D17.1).
· Cost Efficiency: Carbon steel fins reduce cost by 40% vs. alloy fins.
· Rapid Delivery: 30% stock coverage for standard sizes (OD 19–102mm).

ASME SA335 P9 Alloy Steel HFW Solid Finned Tube With Carbon Fin For Heat Exchangers 0

Ratings & Review

Overall Rating

4.0

Based on 50 reviews for this supplier

Rating Snapshot

The following is the distribution of all ratings

5 stars

33%

4 stars

33%

3 stars

33%

2 stars

1 stars

All Reviews

Marcus

Belize Jan 19.2026

Helpful (1)

It's genuine 321H — titanium-stabilized, so no worries about sensitization or intergranular corrosion during welding. Our welder said it welded nicely with no cracking.

Mansour

Egypt Jan 10.2026

Helpful (4)

The 13Cr pins add some cost, but for sour service in furnaces, it's worth it. Already seeing longer run times between turnarounds compared to before.

Ivan Volkov

Russian Federation Nov 11.2025

Helpful (3)

As an engineer in Siberia, I tested these fin tubes in extreme cold (-30°C). The ASTM A213 T11 steel performed well with no thermal cracks, and cooling efficiency met expectations (88%). That said, the Russian-language documentation had translation errors in technical terms, causing minor confusion during installation.

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Studded Tube

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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