Fin & Studded Tubes

FINNED TUBES & STUDDED TUBES

TPS Technitube Röhrenwerke GmbH is the manufacturer of the Technifin ® – Fin tubes.

Fin tubes are used wherever electric power is generated or raw materials are refined and where efficient cooling is required. Fin tubes are needed in a constantly increasing quantity for the production of heatexchangers, condensers, coolers and furnaces. The great increase of thermal efficiency when applying fin tubes allows substantial reduction in costs of cooling equipment. The surface of such tubes is substantially increased and as a result, less tubes are required compared with exchangers with plain tubes.

Description of available types of TECHNIFIN® Tubes

TECHNIFIN® Type “G”

The fin strip is wound into a mechanically produced groove and tightened by backfilling of the base material under pressure. Groove depth 0.4 mm.

Advantages : High fin stability, excellent heat transfer, high operating temperature.

TECHNIFIN® Type L, KL, DL

The fin strip is shaped into a „L“ and wound onto the tube surface under tension.

Advantages : Core tube extensively protected against corrosion by the fin foot, finning of very thin-walled tubes possible.

TECHNIFIN® TYPE “HY”

A smooth core tube is inserted into an aluminum tube and then ï¬ns are extrudes out of the aluminium tube. Advanta- ges: Bond ot outer and inner tube removes the risk of loss of contact due to thermal stress, ï¬ns are more rigid, also available as serrated type TECHNIFIN „HYS“ see below. Core tube extensively protected against corrosion by the aluminium sleeve.
Advantages : Bond of outer and inner tube removes the risk of loss of contact due to thermal stress, fins are more rigid.

TECHNIFIN® TYPE HYS“

As per type „HY“, but ï¬ns are serrated.
Advantages: High- er heat transfer coefï¬cient, for same pressure drop compa- red with „HY“ ï¬n

TECHNIFIN® TYPE “I”

The ï¬n strip is tension wound onto the base tube.Typical ï¬n materials: carbon steel, stainless steel, copper, brass and copper-nickel.

TECHNIFIN® TYPE “N”

The fins are rolled out of the wall of the plain tube. Tube and fin are consisting of one piece.
Advantages : Excellent heattransfer, good bending properties, wide range of material can be used.

TECHNIFIN® TYPE “M”

Manufacturing and advantages as described for type „N“ bit with higher fins.

TECHNIFIN® TYPE “WO”

The fin strip is wound spirally onto the tube and welded continuously to the tube along the spiral root.
Advantages : Strong connection between fin and base tube, prevents loosening of fin because of heat stress, oxidization, corrosion etc., use at very high temperatures possible.

TECHNIFIN® TYPE “WOS”

As per type „WO“ but fins are serrated.
Advantages : Higher heat coefficient. For the same pressure drop compared with „WO“ fin.

TECHNIFIN® TYPE “LFS”

Extruded or drawn fin tube, seamless with two longitudinal opposite fins. Used in boiler wall constructions. Advantages : Strong connection between fin and base tube, prevents loosening of fin because of heat stress, oxidization, corrosion etc., use at very high temperatures possible.

TECHNIFIN® TYPE “LFW”

I/L or U fins welded longitudinally onto the base tube.

TECHNIFIN® TYPE “S”

Square fins are welded onto a round base tube.

TECHNIFIN® TYPE “DOUBLE S”

Square fins are welded onto two round base tubes.

TECHNISTUD® TYPE “S”

Steel studs are welded by a special process onto the base tube.

TPS Fin & Studded tubes are available in the following materials and combinations thereof:

Carbon Steels

• Alloy Steels
• Stainless Steel
• Duplex and Super Duplex Steel
• Exotic Material (such as Nickel base alloys, Titanium etc.)
• Copper and copper alloys
• Aluminium
• Fins or studs in:

  • Aluminium
• Copper
•  Carbon Steels
•  Alloy Steels
•  Stainless Steels
•  Nickel Alloys

Options:

•  Small quantities
•  Tailor made sizes
•  Tailor made combinations of tube and fins

Other material grades can be manufactured upon request.