Heat exchanger tubes

Welded pipes

L, LL, KLM finned tubes (fin tubes)

high frequency welded (serrated) finned tubes (fin tubes)

(serrated) extruded finned tubes

hot dipped galvanized oval (elliptical) finned tubes, rectangular fin tubes

condenser fin flat tubes

H / double H finned tubes (fin tubes)

Studded Pipes

Laser welded finned tubes (fin tubes)

G embedded finned tubes (fin tubes)

inner finned tubes (fin tubes)

longitudinal finned tubes (fin tubes)

seamless finned tubes with two longitudinal opposite fins

casting alloy tubes

Tube finning machine

Aluminum plates, strips,foils

Aluminum welding wire rod

Aluminum tubes, profile

Economizer for Boiler

air-cooled heat exchanger (air cooler)

material

standard & specification

alloy C-276C-276C-276- Chemical Composition: in % max.
C:0,01; Si:0,08; Mn:1,0; Fe:4-7; Ni:57Rest; Cr:14,5-16,5; S:0,03; p:0,04; Mo:15-17; W:3-4,5; Co:2,5; V:0,35
Mechanical Properties - at room temperature - solution annealed condition
0,2 % yield strength min.283 N/mm2
tensile strength min.690 N/mm2
elongation (A5) min.40%

Specification:Seamless Tubes: ASTM-B.622
Welded Tubes: ASTM-B-619/626
Plates/Sheets: ASTM-B-575
Fittings: ASTM-B-366
Flange: ASTM-B-564
Specific Weight: 8,88 kg/dm3
Melting range ca. 1323° Celsius
Welding methods: Arc welding. TIG (Details on request)
Product forms: Tubes and pipes. sheets and plates.
bars. wire and forgings, fittings and flanges

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