Serrated Finned Tubes ASME SA213 T11 With CS Fins For Petrochemical Industry
Serrated Finned Tubes ASME SA213 T11 With CS Fins For Petrochemical Industry
ASME SA213 / ASTM A213 specification for seamless ferritic and austenitic alloy steel boler, superheater, and heat exchanger tubes. T11 is a chromium-molybdenum ferritic steel.ASTM A213 T11 is a specific type of seamless steel tube made from a chrome-moly alloy, designed to withstand high pressures and temperatures, primarily in the power generation and petrochemical industries.
Chemical Composition (%) K11597
| Grade | C | Mn | P | S | Si | Cr | Mo |
| T11 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50-1.00 | 1.00-1.50 | 0.44-0.65 |
Mechanical Properties K11597
| Grade | Tensile Strength,min | Yield Strength (0.2%Offset,min) |
| 60ksi (415 MPa) | 30ksi (205 MPa) | |
| T11 | Elongation min. % | Heat Treating Temperature min. |
| 30 | 1200°F [650°C] |
ASME SA213 T11 alloy steel HFW (High Frequency Welded) serrated finned tubes are widely used in oil and gas projects or power plant projects, such as heat exchangers, boilers, air coolers, and economizers where maximizing surface area and thermal performance is critical.
SA213 T11 material provides good high temperature strength and oxidation resistance.By the way,T11 is generally considered to have good weldability, though it requires pre-heating and post-weld heat treatment (PWHT) to prevent cracking and restore the mechanical properties in the heat-affected zone (HAZ). And it has better thermal conductivity than austenitic stainless steels, which improves heat transfer efficiency.Thus suitable for boilers, superheaters, and heat recovery systems in power plants and refineries.
Applications in Heat Exchanger Equipment
Boilers & Superheaters
Waste Heat Recovery Units (WHRUs) : In the convection sections of chemical process heaters, refinery furnaces, or cement plant kilns.
Air-Cooled Heat Exchangers (ACHE) : In thermal power plants and large industrial boilers.
HRSG (Heat Recovery Steam Generators) : economizer, evaporator, and sometimes the low-temperature sections of the superheater.
Specifications YUHONG Can Offer
| Type | Description | Base tube | Fin specification (mm) | ||
| O.D. (mm) | Fin pitch | Fin height | Fin thick | ||
| Embedded | G-type fin tube | 16-63 | 2.1-5 | <17 | ~0.4 |
| Extruded | Single metal / Combined metal | 8-51 | 1.6-10 | <17 | 0.2-0.4 |
| Low fin tube / T-type fin tube | 10-38 | 0.6-2 | <1.6 | ~0.3 | |
| Bamboo tube / corrugated tube | 16-51 | 8-30 | <2.5 | ~0.3 | |
| Wound | L / KL / LL type fin tube | 16-63 | 2.1-5 | <17 | ~0.4 |
| String | String fin tube | 25-38 | 2.1-3.5 | <20 | 0.2-0.5 |
| U-type | U-type fin tube | 16-38 | / | / | / |
| Welding | HF-welding fin tube | 16-219 | 3-25 | 5-30 | 0.8-3 |
| H/HH type fin tube | 25-63 | 8-30 | <200 | 1.5-3.5 | |
| Serrated spiral fin tube | 25-219 | 2-7 | <38.1 | 0.9-2.0 | |
| Studed fin tube | 25-219 | 8-30 | 5-35 | φ5-20 |
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