YUHONG HOLDING GROUP CO., LTD
YUHONG HOLDING GROUP CO., LTD
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| Attribute | Value |
|---|---|
| Product | Fin Tubes or Finned Tube |
| Type | Studded Fin Tubes |
| Standard | ASTM A213 |
| Material | T9 Base Tubes and CS Fins |
| O.D. | Generally Greater Than 100mm |
| Length | According to clients' need |
| Use | For large equipment, Heat Exchanger / Boiler / Furnaces / Condensers / Evaporators, etc |
| Packing | Ply-wooden Case With Iron Frame |
Studded fin tubes, also known as nail head tubes or nail-like ribbed tubes, are widely used in petrochemical industries, particularly in the convection chambers of tubular furnaces to enhance heat transfer effects.
ASTM A213 covers seamless ferritic and austenitic steel boiler, superheater, and heat-exchanger tubes, including Grade T9.
| Grade | C | Mn | P | S | Si | Cr | Mo |
|---|---|---|---|---|---|---|---|
| T9 | 0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.025-1.00 | 8.00-10.00 | 0.90-1.10 |
| Grade | Tensile Strength,min | Yield Strength (0.2%Offset,min) |
|---|---|---|
| T9 | 60ksi (415 MPa) | 30ksi (205 MPa) |
| Type | Description | Base tube 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 |
| Wound | L / KL / LL type fin tube | 16-63 | 2.1~5 | <17 | ~0.4 |
| Welding | HF-welding fin tube | 16-219 | 3~25 | 5~30 | 0.8-3 |
| Studded | Studded fin tube | 25-219 | 8~30 | 5~35 | φ5-20 |