fin type: Extruded fin tubes ( fin tubes )- extruded fin tubes ( fin tubes )s and many special sizes extruded fin tubes ( fin tubes ). extruded fin tubes ( fin tubes ) has the advantages of high efficiency, strong corrosion resistant and long life as the International, technologically advanced heat transfer element.

The base tubes (pipes) (core tube) of double extruded fin tubes can be SS, CS, corrosion resistant steel, copper and copper alloys, Ti and Ti alloys and the other materials. The base tubes (pipes) (core tube) of single extruded fin tubes can be copper, Nickel-copper, Aluminum and the other materials.

These products are widely used in petroleum, chemical, metallurgy, textile, mechanical and electrical, light industry and pharmaceutical industries in the heating, drying, condensation and cooling equipments.

Applications and characteristics

Working temperature ≤350°C

working pressure ≤32MPa

High heat transfer performance, same with KLM type (Knurled "L"). Good fins stiffness, against deformation high atmospheric corrosion resistance for long term stable usage.

Extruded serrated finned tubes:

general used materials:
Supply Range of base tubes (pipes) (core tube):

Carbon Steel ASTM A 179, ASTM A 192, ASTM A 210 Gr. A1, ASTM A 210 Gr. C, ASTM A 106 Gr. B
Low Alloy Steel ASTM A 209 T1, ASTM A 213 / A 199 T11/T12, ASTM A 213 / A 199 T22, ASTM A 213 / A 199 T5, ASTM A 213 / A 199 T9, ASTM A 335 P1 / A 161 T1, ASTM A 335 P11 / P12 / A 200 T22, ASTM A 335 P22 / A 200 T22, ASTM A 335 P5 / A 200 T5, ASTM A 355 P9 / A 200 T9
Stainless Steel ASTM A 213 / A 312 TP 304l, ASTM A 213 / A 312 TP 304L, ASTM A 213 / A 312 TP 321, ASTM A 213 / A 312 TP 316, ASTM A 213 / A 312 TP 316L, ASTM A 213 / A 312 TP 347, ASTM A 213 / A 312 TP 316Ti, ASTM A 289 / A 790 UNS S 31803, ASTM B 677 Alloy 904L
Nickel ASTM B 161 Ni 200, ASTM B 161 Ni 201,Copper ASTM B111