ASTM A312 TP304H Serrated Finned Tube With SS304H Fins For Heat Recovery System

ASTM A312 TP304H Serrated Finned Tube With SS304H Fins For Heat Recovery System

The ASTM A312 TP304H Serrated Finned Tube with SS304H Fins is a high-performance heat exchanger component designed for demanding industrial applications. Below is a detailed breakdown of its composition, features, and advantages:

1. Base Tube Material: ASTM A312 TP304H

A high-carbon variant of 304 stainless steel (304H), offering improved high-temperature strength and creep resistance.

Complies with ASTM A312, which covers seamless and welded austenitic stainless steel pipes for high-temperature service.

Fins Material: SS304H (Stainless Steel 304H)

The fins are made of the same grade as the tube, ensuring compatibility in thermal expansion and corrosion resistance.

Chemical Composition of ASTM A312 TP304H (Weight %)

Mechanical Properties of ASTM A312 TP304H (ASTM A312 Standard)

Comparison with Similar Materials

2. Fin Type: Serrated (Indented or Cut Fins)

The fins have notches or serrations along their edges to enhance turbulence and heat transfer efficiency.

3. Key Features & Benefits

a) High-Temperature Performance

TP304H has a higher carbon content (0.04–0.10%) than standard 304/304L, providing:

Better creep resistance (resists deformation under stress at high temps).

Sustained strength up to ~815°C (1500°F).

Excellent oxidation resistance in steam and flue gas environments.

b) Enhanced Heat Transfer

Serrated fins create turbulence, improving heat exchange efficiency by 20–30% compared to smooth fins.

Reduces fouling (deposits on the tube surface), making it ideal for dirty or high-particulate gas streams.

c) Corrosion Resistance

SS304H offers strong resistance to:

Organic acids, chloride stress corrosion (in moderate conditions).

Oxidizing environments (e.g., nitric acid, steam).

Sulfur-bearing gases (common in oil & gas, petrochemicals).

d) Mechanical Strength

Tensile strength: ≥515 MPa | Yield strength: ≥205 MPa (per ASTM A312).

Suitable for high-pressure applications (e.g., boilers, superheaters).

4. Manufacturing Process

• Base Tube Production:

Seamless or welded tube made from TP304H stainless steel.

• Fin Attachment:

Fins are helically wound onto the tube and secured via high-frequency welding or extrusion.

Serrations are cut or pressed into the fins post-attachment.

• Quality Checks:

Dimensional inspection, hydrostatic testing, PMI (Positive Material Identification).

The ASTM A312 TP304H serrated finned tube with SS304H fins is a specialized heat exchanger component designed for high-temperature and high-pressure applications. Here are its key applications:

1. High-Temperature Heat Exchangers

Used in boilers, superheaters, and reheaters in power plants.

Suitable for waste heat recovery systems in industries like steel, cement, and petrochemicals.

2. Petrochemical & Refining Industries

Used in furnaces, reformers, and cracking units where corrosion resistance and high-temperature strength are critical.

Handles aggressive fluids like hydrocarbons, sour gas, and acidic environments.

3. Oil & Gas Processing

Applied in heat recovery steam generators (HRSGs) and gas coolers.

Resists sulfur corrosion (sour service) due to SS304H’s enhanced chromium and nickel content.

4. Chemical Processing

Used in evaporators, condensers, and reactors handling corrosive chemicals.

The serrated fins improve heat transfer efficiency in viscous or fouling-prone fluids.

5. Power Generation (Coal, Gas, Nuclear)

Finned tubes enhance heat transfer in steam generation and exhaust gas systems.

TP304H (high-carbon 304) offers better creep resistance at elevated temperatures (up to ~815°C).

Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories, the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always. The factories already got certificates like : ABS, LR, DNV-GL, BV, KR, CCS, ASME, ISO 9001, ISO14001, ISO18001, ect.

Our factories main products as below :
Factory 1th: Stainless steel seamless tube, Duplex steel seamless tube, Super duplex steel seamless tube, Nickel alloy steel seamless tube;

Factory 2th: Carbon steel seamless tube, Alloy steel seamless tube; Enhanced Heat Tranfer Tube, low fin tube ,U bending workshop;
Factory 3th: High frequency welding fin tube(HFW fin tube, Solid Fin tube, Studded Tube, Serrated Fin tube, Longitudinal welding fin tube), Wound fin tube(L type fin tube, LL type fin tube, KL type fin tube), Embedded G type fin tube , Extruded fin tube, low fin tube, U bend & 180deg. Return;

Yuhong Holding Group also has gained rich experience for project package( products contain:Pipes, Fittings, Flanges, heat exchanger, furnace, fired heater, air cooler, boiler) , YUHONG brand has marked its global presence in more than 85 countries, like, Korea, USA, Canada, Mexico, Colombia, Bolivia, Chile, Argentina, Brazil, Ecuador, Austria, New Zealand, Singapore, Malasyia, Indonesia, Thailand, Vietnam, Ukraine, Turkey,Sauid Arabia, Qatar, U.A.E,Israel,India, UK, France, Italy, Gernmany, Poland, Spain,... We have successfully implemented the orders of Cross Country Pipelines for our valuable customers. In addition, we have also developed a huge network of contacts and strategic alliances with most important manufacturers as stockists around the world.