1. What is ASTM A213 TP347H Serrated Finned Tube?

ASTM A213 TP347H Serrated Finned Tube is an ultra-high-temperature heat transfer solution engineered for critical creep-resistance applications. It features a seamless niobium-stabilized austenitic stainless steel base tube (ASME SA213 TP347H) with helically wound serrated fins resistance-welded to the surface. This design delivers exceptional oxidation resistance up to 900°C (1,652°F) and prevents carbide precipitation in continuous service, making it the premier choice for superheaters, reformers, and waste heat boilers in aggressive environments.

1. ASTM A213 TP347H Stainless Steel Seamless Fin Tube

Dimensional Specifications

Chemical Composition (%)

Note: Nb content must satisfy ≥10×C and ≤1.00%.

Mechanical Properties

3. Key Applications & Competitive Advantages

· Power Plant Boilers: Superheaters/reheaters in 600°C+ USC coal units.

· Petrochemical: Ethylene cracker transfer line exchangers.

· Waste-to-Energy: Superheaters for corrosive waste incinerators.

· Chemical Processing: Hydroprocessing furnace convection banks.

· Steel Mills: Recuperators for coke oven gas.

4. Why Choose ASTM A370 TP347H

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:
· Zero Sensitization: Nb stabilization eliminates post-weld heat treatment.
· Ash Erosion Defense: Serrations reduce fouling by 45% (EPRI Field Data).
· Life Extension: 3x longer service than TP321H in 700°C flue gas.
· Custom Engineered: No-fin zones, fin pitch, and bevels per client drawings.