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| Brand Name: | YUHONG GROUP |
| MOQ: | 1PC |
| Price: | 1--10000 USD |
| Payment Terms: | L/C, T/T |
| Supply Ability: | 10000 tons/month |
| Attribute | Value |
|---|---|
| Certification | ASME, U STAMP, API, ASME, ABS, LR, DNV, GL, BV, KR, TS, CCS |
| Base Tube Material | Carbon Steel, SA179, SA192, A106 |
| Length | Max 25M/PC |
| Fin Wall thickness | ~0.3mm |
| Fin pitch | 19-26-27-28-30-36 fins per inch |
| Fin height | ＜1.4mm |
Low fin tubes (also called integral fin tubes) are used in heat exchangers, boilers, and condensers to enhance heat transfer efficiency. Their strength depends on material properties, fin geometry, and manufacturing processes.
Carbon steel low fin tubes are typically made from ASTM A179, A192, or A210 grades. Their mechanical properties include:
| Property | ASTM A179 | ASTM A192 | ASTM A210 |
|---|---|---|---|
| Tensile Strength | ≥325 MPa | ≥325 MPa | ≥415 MPa |
| Yield Strength | ≥180 MPa | ≥180 MPa | ≥255 MPa |
| Elongation (%) | ≥35% | ≥35% | ≥30% |
| Hardness (HB) | ≤72 HRB | ≤77 HRB | ≤79 HRB |
Low fin tubes have helical fins extruded from the base tube, which affects structural integrity:
| Parameter | Typical Range | Effect on Strength |
|---|---|---|
| Fin Height | 0.8-1.5 mm | ↑ Height -> ↓ Burst Pressure |
| Fin Pitch | 19-40 fins/inch | Denser fins -> Slightly weaker |
| Base Wall Thickness | 1.2-3.0 mm | Thicker -> Higher pressure rating |
| Property | Low Fin Tube | Smooth Tube |
|---|---|---|
| Tensile Strength | Similar | Similar |
| Burst Pressure | ~70-80% of smooth | 100% (reference) |
| Fatigue Resistance | Slightly lower | Higher |
| Corrosion Resistance | Similar (but fins trap deposits) | Better for clean fluids |
Where Carbon Steel Low Fin Tubes Excel:
Where They Should Be Avoided:
