Low Fin Tubes
Low Fin Tubes
Pantani Divisione Tubi is specialized in LOW FIN tubes for heat exchangers applied mostly in LNG plants, Chemical & Petrochemical plants, Refineries, Power plants, Renewable energy plants, Naval & Marine plants. Low fins are obtained integrally from tube wall thickness by a cold forming process on the external surface. Fins increase considerably the thermo-exchanging efficiency of the tube.
Materials
- Copper alloys
- Carbon steel
- Low alloy steel
- Stainless steel (austenitic, ferritic, super austenitic)
- Duplex alloys (UNS S32750, UNS S32760)
- Titanium
- Monel alloys
- Nickel alloys
Low fin dimension capability
| Tube OD | Tube thickness (plain section) | Fin pitch | Fin height | Tube length |
| Min. 12,7mm / Max. 31,75mm | Min. 1,245mm / Max. 3,404mm | 19 – 26 – 27 – 28 – 30 – 36 fins per inch | Max. 1,40mm | Max. 25000mm |
Dimensional controls on low fin tube
– Tube OD plain section (D)
– Tube ID plain section (Di)
– Tube wall thickness plain section (W)
– Tube OD fin section (di)
– Fin root diameter (dr)
– Tube ID fin section (di)
– Thickness under fin (Wf)
– Fin pitch (Fm)
– Fin height (Fh)
– Complete visual check
Standards
Standards usually required for low fin tubes:
– ASTM B359/359M (Copper alloys)
– ASTM A498/498M (Carbon steel)
– ASTM A1012/1012M (Stainless steel)
– ASTM B891/891M (Titanium)
Post Finning NDT Control
– Hydrostatic Test
– Prova Pneumatica ad immersione
– Eddy Current Test
