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ASTM A335 P9 Alloy Steel Studded Fin Tube For HVAC Systems

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ASTM A335 P9 Alloy Steel Studded Fin Tube For HVAC Systems

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

Detail Information

Place of Origin:

China

Certification:

ABS, BV, ISO, ASTM, SGS

Fin Pitch:

5-35MM

Bare Tube Diameter:

25-219MM

Fin Type:

Studded Fin Tube

Bare Tube Specification&Material:

ASTM A335 P9

Application:

Power Generation's Cooling System, Refinery Air Cooler，Petrochemical And Refinery Industries

Supply Ability:

According to Clients' requirements

Highlight:

HVAC Studded Fin Tube

HVAC Systems Studded Fin Tube

P9 Studded Fin Tube

Product Description

1. What is ASTM A335 P9 Studded Fin Tube?

ASTM A335 P9 Studded Fin Tube is a high-temperature solution engineered for severe sulfidation and ash erosion environments. It combines a seamless chromium-molybdenum alloy steel base tube (ASTM A335 P9, UNS S50400) with carbon steel stud-type fins resistance-welded perpendicularly to the surface. This robust design maximizes heat transfer area while preventing ash buildup, delivering 5x longer sulfidation resistance than carbon steel in refinery heaters, coker units, and waste incinerators operating up to 600°C (1,112°F).

2. Chemical & Mechanical Properties

Dimensional Specifications:

Bare Tube Diameter:25-219mm

Fin Height::5-35mm

Fin Thickness:

Φ5-20mm

Fin Pitch: 8-30mm

Tube Ends: Plain Ends / Beveled Ends

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

Chemical Composition (%)

ASTM A335 P9 Chemicial Composition(%)
Element	C	Si	Mo	P	Si	Cr	S
Range	≤ 0.15	0.25-1.00	0.90-1.10	≤ 0.025	≤0.030	8.0–10.0	<0.025

Mechanical Properties

ASTM A335 P9 Mechanical Properties
Tensile Strength	Yield Strength	Elongation	Hardness	Max Service Temp.
≥415 MPa	≥205MPa	≥30%	≤ 179 HB	600°C (1112°F)

3. Key Applications & Competitive Advantages

● Refinery Heaters: Convection sections in crude/vacuum distillation units (NACE RP0472 compliant).

● Delayed Cokers: Transfer line exchangers for 500°C+ vapors.

● Waste-to-Energy: Boiler tubes for municipal solid waste (MSW) incinerators.

● Coal-Fired Plants: Economizers handling >50g/Nm³ fly ash.

● Chemical Processing: Sulfuric acid regeneration heaters.

4.Why choose ASTM A335 Gr.9 Studded Fin 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:

● Ash Self-Cleaning: Stud spacing reduces fouling by 60% vs. helical fins (EPRI Study).
● 10-Year Lifespan: Withstands cyclic operation per API 530.
● Cost Saving: 35% lower OPEX than refractory-lined carbon steel.
● Rapid Delivery: 50+ standard sizes (OD 25–152mm) in stock.

ASTM A335 P9 Alloy Steel Studded Fin Tube For HVAC Systems 0

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Products Details

Home > Products >

Studded Tube

ASTM A335 P9 Alloy Steel Studded Fin Tube For HVAC Systems

All Category

ASTM A335 P9 Alloy Steel Studded Fin Tube For HVAC Systems

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

Detail Information

Place of Origin:

China

Brand Name:

YUHONG

Certification:

ABS, BV, ISO, ASTM, SGS

Fin Pitch:

5-35MM

Bare Tube Diameter:

25-219MM

Fin Type:

Studded Fin Tube

Bare Tube Specification&Material:

ASTM A335 P9

Application:

Power Generation's Cooling System, Refinery Air Cooler，Petrochemical And Refinery Industries

Minimum Order Quantity:

200-500KGS

Price:

Negotiable

Packaging Details:

Ply-wooden Cases with Steel Frames(both ends of pipes have plastic caps）

Delivery Time:

45-75 Days (Depend on Customer's Requirement

Payment Terms:

L/C,T/T,AT SIGHT

Supply Ability:

According to Clients' requirements

Highlight:

HVAC Studded Fin Tube

HVAC Systems Studded Fin Tube

P9 Studded Fin Tube

Product Description

1. What is ASTM A335 P9 Studded Fin Tube?

2. Chemical & Mechanical Properties

Dimensional Specifications:

Bare Tube Diameter:25-219mm

Fin Height::5-35mm

Fin Thickness:

Φ5-20mm

Fin Pitch: 8-30mm

Tube Ends: Plain Ends / Beveled Ends

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

Chemical Composition (%)

ASTM A335 P9 Chemicial Composition(%)
Element	C	Si	Mo	P	Si	Cr	S
Range	≤ 0.15	0.25-1.00	0.90-1.10	≤ 0.025	≤0.030	8.0–10.0	<0.025

Mechanical Properties

ASTM A335 P9 Mechanical Properties
Tensile Strength	Yield Strength	Elongation	Hardness	Max Service Temp.
≥415 MPa	≥205MPa	≥30%	≤ 179 HB	600°C (1112°F)

3. Key Applications & Competitive Advantages

● Refinery Heaters: Convection sections in crude/vacuum distillation units (NACE RP0472 compliant).

● Delayed Cokers: Transfer line exchangers for 500°C+ vapors.

● Waste-to-Energy: Boiler tubes for municipal solid waste (MSW) incinerators.

● Coal-Fired Plants: Economizers handling >50g/Nm³ fly ash.

● Chemical Processing: Sulfuric acid regeneration heaters.

4.Why choose ASTM A335 Gr.9 Studded Fin Tube:

A:Company Competitiveness:

ASTM A335 P9 Alloy Steel Studded Fin Tube For HVAC Systems 0

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