ASTM A213 T9 Alloy Steel HFW Finned Tubes For Thermal And Nuclear
Power Generation
General Specifications HFW Finned Tubes
Base pipe/tube O.D: 15.88-219.1mm
Fin height: 5-50mm
Fin thickness: 0.8-3.0mm
Fin pitch: as customer's request.
End: Plain Ends, Beveled Ends
No fin area on both side: as customer's request
Base tubes for HFW finned tubes usually are : CS / SS /
AS;generally, the material de fins is the same as th material of
tubes
Detailes Of ASME SA213 Tube K90941
ASME SA213 seamless ferritic and austenitic steel boiler, superheater, and
heat-exchanger tubes, designated Grades T5, TP304, etc. Used for
boiler, superheater, heat exchanger, or condenser tubes and other
application.
Chemical Composition (%)
| Grade | C | Mn | P | Su | Si | Cr | Mo |
| T9 | 0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.25-1.00 | 8.00-10.00 | 0.90-1.00 |
Mechanical Properties
| Grade | Tensile Strength,min | Yield Strength (0.2%Offset,min) | Elongation | Brinell/Vickers | Rockwell |
| T9 | ksi-60,MPa-415 | ksi-30,MPa-205 | 30% | 179 HBW/190 HV | 89 HRB |
Related Industries Involved
1.Power Generation
finned tubes in boilers, heat recovery steam generators (HRSG), and
economizers to improve heat exchange efficiency in thermal and
nuclear power plants.
2. Petrochemical & Oil Refining
finned tubes in heaters, reformers, and waste heat recovery systems
to withstand high temperatures and corrosive environments.
3. HVAC & Refrigeration
part of air coolers, radiators, and condensers for commercial and
industrial climate control systems.
4. Industrial Process Heating
used in drying systems, kilns, and chemical reactors where uniform
heat distribution is critical.
5. Marine & Offshore
finned tubes in shipboard heat exchangers and desalination units
due to their durability in saline conditions.
6. Waste-to-Energy & Environmental Control
important components in flue gas treatment, exhaust gas recovery,
and incineration systems to reduce emissions.
Plant Capacity
For HFW finend tubes, with 4 production lines. The length of the two production lines to make
fin tubes is less than 25 meters, and the other two can reach 30
meters.
Specifications For Various Types Of Finned Tubes
| Type | Description | Base tube | Fin specification (mm) |
| O.D. (mm) | Fin pitch | Fin height | Fin thick |
| Embedded | G-type fin tueb | 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 | 8.0~30 | <2.5 | / |
| 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 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 |
| Studed fin tube | 25-219 | 8~30 | 5~35 | φ5-20 |
Base pipe / tube :
1.Stainless steel: ASME SA213/ASTM A213, ASME SA249/A249 ,ASME
SA312/A312
2.Duplex/Super Duplex Steel: ASME SA789/A789 , ASME SA790/A790
3.Carbon Steel: ASME SA106/ASTM A106 , ASME SA179/ASTM A179, ASME
SA192/ASTM A192, ASTM A214, ASTM A210
4.Alloy Steel:ASME SA213/ASTM A213, ASME SA335 /ASTM A335
5.Nickel Alloy Steel: Hestalloy / Inconel / Pure Nickel / NS Alloy
/ Copper Alloy Steel
Fin material: Alloy Steel , Stainless Steel , Carbon Steel
