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ASTM A213 T9 Alloy Steel Seamless Studded Fin Tube For HVAC Systems

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ASTM A213 T9 Alloy Steel Seamless Studded Fin Tube For HVAC Systems

Name: ASTM A213 T9 Alloy Steel Seamless Studded Fin Tube For HVAC Systems
Brand: YUHONG
Price: 1 USD

Wholesale ASTM A213 T9 Alloy Steel Seamless Studded Fin Tube For HVAC Systems from china suppliers

Brand Name : YUHONG

Certification : ABS, BV, ISO, ASTM, SGS

Place of Origin : China

MOQ : 200-500KGS

Price : Negotiable

Payment Terms : L/C,T/T,AT SIGHT

Supply Ability : According to Clients' requirements

Delivery Time : 45-75 Days (Depend on Customer's Requirement

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

Bare Tube Diameter : 25-219mm

Fin Pitch : 8-30mm

Fin Height : 5-35mm

Fin Thick : Φ5-20mm

Application : Heat Exchangers, Refinery Air Cooler, Heater, Cooling tower

Base Tube Specification & Material : ASTM A213 T9

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1. What is ASTM A213 T9 Studded Fin Tube?

ASTM A213 T9 Studded Fin Tube is a high-temperature heat transfer component engineered for extreme thermal and corrosive service. It consists of a seamless chromium-molybdenum alloy steel base tube (ASTM A213 T9) with stud-type fins resistance-welded perpendicularly to the surface. This robust construction maximizes heat flux in high-ash/flue gas environments (up to 600°C/1,112°F), offering superior oxidation resistance and 3x longer life than carbon steel tubes in waste heat boilers, reformers, and fired heaters.

2. Chemical & Mechanical Properties

Chemical Composition (ASTM A213 T9 Base Tube)

Element	Content (%)	Critical Function
Chromium (Cr)	8.0–10.0	Oxidation resistance
Molybdenum (Mo)	0.90–1.10	High-temp strength
Carbon (C)	0.15 max	Weldability
Manganese (Mn)	0.30–0.60	Toughness
Silicon (Si)	0.25–1.00	Deoxidation
Phosphorus (P)	≤ 0.025	Purity
Sulfur (S)	≤ 0.025	Ductility

Mechanical Properties (System)

Property	Base Tube (T9)
Tensile Strength	≥ 415 MPa
Yield Strength	≥ 205 MPa
Max Service Temp.	600°C (1,112°F)
Hardness	≤ 179 HB
Thermal Conductivity	36.7 W/m·K

3. Key Applications & Competitive Advantages

· Refinery Heaters: Convection sections in CDU/VDU heaters (resists sulfidation).

· Chemical Reformers: Syngas coolers in methanol/ammonia plants.

· Waste Heat Recovery: Boilers in cement/steel mills (handles >80g/Nm³ fly ash).

· Power Generation: SCR system heat exchangers for coal-fired plants.

· Petrochemical: Cracking furnace convection tubes.

4. Why This Solution Dominates:
· 10-Year Lifespan: Withstands 650°C cyclic operation per NACE RP0492.
· Ash Erosion Resistance: Stud spacing blocks ash buildup – 40% lower fouling vs. helical fins.
· Cost Saving: 35% lower OPEX than refractory-lined carbon steel tubes.
· Customization: Stud height (15–40mm), diameter (3–8mm), and pitch optimization.

ASTM A213 T9 Alloy Steel Seamless Studded Fin Tube For HVAC Systems

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