Fin & Studded 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 quanitity for the production of heatexchangers, condensers, coolers and furnaces. The great increase of the thermal efficiency when applying fin tubes allows a substantial reduction in site and costs of such cooling equipment. The surface of such tubes is substantially increased and consequently less tubes are required compared with exchangers with plain tubes.

Studded tubes	Fin tubes	TPS Technitube Röhrenwerke GmbH seamless tube production mill

Description of available types of TECHNIFIN® Tubes

TECHNIFIN® Type “G”

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

 

TECHNIFIN® Type “L, KL, DL“

Advantages: Core tube extensivly 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 aluminium tube.

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 type “HY“, but fins are serrated.

Advantages: Higher heat transfer coefficient, for same pressure drop compared with „HY“ fin. 

TECHNIFIN® TYPE "I"

The fin strip is wound onto the base tube. Typical fin material is steel.

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 heattranser, good bending properties, wide rage 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 longitudianally 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.

Alloy range base tubes - TECHNIFIN®

Supply Range

Other material grades can be manufactured upon request.