Extruded Finned Tubes Stainless Steel TP304 For HVAC And Refrigeration Heat Exchangers

Extruded Finned Tubes Stainless Steel TP304 For HVAC And Refrigeration Heat Exchangers

Heat exchangers are the core components of HVAC and refrigeration systems, responsible for transferring thermal energy between two fluids without direct mixing,fluids like refrigerant,air,water or brine. They enable the refrigeration cycle to absorb heat from a cooled space and reject it outdoors, or vice versa in heat pumps.Finned tubes play a very important role,bare tubes with external fins to drastically increase surface area. The advantages of extruded finned tubes in HVAC And refrigeration heat exchangers is compact, lightweight, high air‑side heat transfer, cost‑effective.

ASTM A249 TP304 Base Tube

ASTM A249 covers avg. wall thickness or min. wall thickness welded tubes and heavily cold worked welded tubes made from the austenitic steels, tubes of this estandard widely used in boiler, superheater, heat exchanger, or condenser,etc. The following are the chemical composition and mechanical properties of TP304 material.

Chemical Composition (%) max

Mechanical Properties

Base tubes of standard ASTM A249 for extruded finned tubes is the preferred choice for HVAC / refrigeration applications, specifically designed for heat exchangers / condensers.

A249 welded tubes + cold drawing process, with high dimensional accuracy and smooth surface, most suitable for aluminum fin extrusion forming, with high bonding strength and low contact thermal resistance.

A249 welded rubes offers the best cost-performance, prices lower than seamless pipe (A213), fully meeting requirements in HVAC / refrigeration under medium pressure, medium temperature, clean / weakly corrosive conditions.

Typical Applications 

Air-cooled heat exchangers

HVAC condensers & evaporators

Refrigeration chillers and heat pumps

Industrial process cooling and heat recovery units

Dry coolers and free cooling systems,etc.