ASME SA213 T12 High-Frequency Welded Finned Tubes for Waste Heat Recovery Boilers

Product Overview

ASME SA213 T12 High-Frequency Welded Finned Tubes are designed for heat-transfer applications in Waste Heat Recovery Boilers (WHRBs), where efficient heat recovery, elevated-temperature strength, and reliable long-term operation are required.

The base tube is manufactured from ASME SA213 T12, a chromium-molybdenum alloy steel grade intended for boiler, superheater, and heat-exchanger service. The addition of chromium and molybdenum provides the tube with improved elevated-temperature performance compared with conventional carbon steel tube materials.

A high-frequency welded fin structure is continuously attached to the outer surface of the base tube. The fins increase the effective heat-transfer area on the flue-gas side, allowing the heat exchanger to recover more energy within a compact tube-bank configuration.

These finned tubes are particularly suitable for industrial waste heat recovery systems where hot exhaust gases are used to generate steam or preheat boiler feedwater.

Key Features

• Base Tube Material: ASME SA213 T12
• Fin Type: High-Frequency Welded Fins
• Material Type: Chromium-Molybdenum Alloy Steel
• Primary Application: Waste Heat Recovery Boilers
• Heat Transfer: Increased external surface area for improved gas-side heat transfer
• High-Temperature Performance: Suitable for elevated-temperature boiler and heat-recovery service
• Continuous Fin Attachment: High-frequency welding provides a consistent fin-to-tube connection along the tube length
• Custom Manufacturing: Tube diameter, wall thickness, fin height, fin thickness, fin pitch, and tube length can be manufactured according to project requirements

Applications

ASME SA213 T12 High-Frequency Welded Finned Tubes are commonly used in:

• Waste Heat Recovery Boilers (WHRB)
• Heat Recovery Steam Generators (HRSG)
• Boiler Economizers
• Industrial Boilers
• Superheaters
• Reheaters
• Waste Heat Recovery Systems
• High-Temperature Heat Exchangers
• Power Generation
• Petrochemical and Refinery Plants
• Steel and Cement Plants

Chemical Composition of ASME SA213 T12

ASME SA213 T12 is a low-alloy chromium-molybdenum steel. Chromium and molybdenum are the principal alloying elements responsible for its elevated-temperature service characteristics.

The following composition is based on ASTM A213 T12 requirements.

The standard permits T12 to be ordered with sulfur up to 0.045% under a specified provision, so the exact requirement should be confirmed against the applicable purchase specification.

Mechanical Properties of ASME SA213 T12

Typical minimum mechanical requirements for T12 include a tensile strength of 415 MPa, yield strength of 220 MPa, and minimum elongation of 30%. A maximum hardness of approximately 163 HBW is also commonly specified for T12.