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High-Integrity ASME SA249 TP304L Welded Extruded Fin Tube For Heat Exchanger

High-Integrity ASME SA249 TP304L Welded Extruded Fin Tube For Heat Exchanger

Brand Name: YUHONG
MOQ: 200-500KGS
Price: Negotiable
Payment Terms: L/C,T/T,AT SIGHT
Supply Ability: According to Clients' requirements
Detail Information
Place of Origin:
China
Certification:
ABS, BV, ISO, ASTM, SGS
Fin Type:
Extruded Fin Tube
Bare Tube Standard:
ASME SA249
Bare Tube Material:
TP304L(1.4307)
Application:
Heat Exchangers,Air-cooled Exchangers, Refinery Air Cooler,Boiler Economizer
Fin Material:
Aluminum
Bare Tube Diameter:
8~51mm
Fin Height:
<17mm
Fin Thickness:
0.2~0.4mm
Packaging Details:
Ply-wooden Cases with Steel Frames(both ends of pipes have plastic caps)
Supply Ability:
According to Clients' requirements
Highlight:

ASME SA249 TP304L welded fin tube

,

extruded fin tube for heat exchanger

,

high-integrity welded fin tube

Product Description

ASME SA249 TP304L Welded Extruded Fin Tube With Aluminum Fin


1.Product Overview

ASME SA249 is a standard specification for welded austenitic stainless steel tubes for boiler, superheater, heat exchanger and condenser applications. TP304L, as a low-carbon variant of TP304 (carbon content 0.03%), boasts excellent intergranular corrosion resistance after weldingits core alloy composition (18.00-20.00% Cr, 8.00-12.00% Ni) endows it with superior general corrosion resistance. The "Welded Extruded Fin Tube" refers to a high-efficiency heat transfer component fabricated by first forming a welded base tube per ASME SA249, then extruding fin strips onto the outer surface via mechanical extrusion. Its defining features include the TP304L base material (ensuring corrosion resistance and post-weld stability) and the extruded fin structure (realizing tight fin-base tube bonding with low contact thermal resistance). It addresses the demand for efficient heat exchange in medium-low temperature corrosive environments, serving as a key component in chemical, food and marine heat transfer systems.

 

ASME SA249 TP304L Welded Extruded Fin Tube is a corrosion-resistant, high-efficiency heat transfer product tailored for medium-low temperature (450) corrosive scenarios, widely used in chemical condensers, food processing heat exchangers and marine cooling equipment.


2.Chemical Composition

Element

C

Si

Mn

Cr

Ni

P

S

N

Range

≤0.03%

≤1.00%

≤2.00%

18.00-20.00%

8.00-12.00%

≤0.045%

≤0.030%

≤0.10%


3.Mechanical Properties

Tensile Strength

Yield Strength (0.2% Offset)

Hardness (HB)

Elongation (in 200mm)

≥485MPa

≥170MPa

≤187HB

≥40%


4.Equivalent Material of TP304L Base Tube

ASME/ASTM

UNS NO.

EN

JIS

GOST

ISO

SA249 TP304L/A249 TP304L

S30403

1.4307

SUS304L

03X18H11

X2CrNi18-10


5.ASME SA249 TP304L Welded Extruded Fin Tube vs. Similar Products

TP304L vs. TP304 Welded Extruded Fin Tube: Both share similar general corrosion resistance and heat transfer performance, but TP304Ls low carbon content (0.03%) eliminates intergranular corrosion risks after weldingcritical for welded heat exchanger systems in corrosive environments. TP304 (C0.08%) is more cost-effective but unsuitable for post-weld corrosive scenarios. TP304L also has slightly lower strength but superior weldability.

 

TP304L vs. TP316L Welded Extruded Fin Tube: TP316L contains 2-3% Mo, offering better resistance to chloride-induced pitting (e.g., seawater, brine) than TP304L. However, TP304L has higher thermal conductivity (~16.2W/(m·K) vs. TP316Ls ~15.1W/(m·K)) and 20-30% lower cost. TP304L fits general corrosive media (weak acids, alkalis), while TP316L suits harsh chloride environments.


6.Application of ASME SA249 TP304L Welded Extruded Fin Tube

1.Chemical & Petrochemical: Heat exchangers and condensers for corrosive process streams (e.g., acids, organics).

2.Pharmaceutical & Food Processing: Critical equipment requiring hygienic, cleanable surfaces and material purity (e.g., reactors, pasteurizers).

3.Power Generation: Auxiliary heat exchangers exposed to potentially corrosive environments (e.g., feedwater heaters, lube oil coolers).

4.Air Pollution Control: Heat recovery units handling acidic flue gas condensate (e.g., condensing economizers).


High-Integrity ASME SA249 TP304L Welded Extruded Fin Tube For Heat Exchanger 0