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REFRIGERATION TUBES

Marcegaglia do Brasil range of electro-welded steel tubes, unplated or zinc dedicated to the refrigeration industry is manufactured according to the specific sector norms and tolerances. The production is thoroughly tested to allow use in applications such as condensers and evaporators for heating and cooling systems and household appliances. Versatility, economy and high corrosion resistance complete the features of Marcegaglia refrigeration tubes.

PRODUCT RANGE
outside diameter
mm
tolerance
mm
wall thickness
mm
tolerance
mm
4,00 ± 0,08 0,64 ± 0,13
4,76 ± 0,08 0,71 ± 0,13
6,00 ± 0,08 0,71 ± 0,08
6,35 ± 0,08 0,71 ± 0,08
7,94 ± 0,08 0,71 ± 0,08
9,52 ± 0,08 0,71 ± 0,08
TECHNICAL CHARACTERISTICS

Grade

Welded low carbon steel tube 1006/1010 (SAE J526)


Surface appearance

Resistance in salt spray:
according to ASTM B117 (zinc coated tube) ≥ 48 hours

The unplated tube is supplied with oiled outer surface

Hot dip galvanized


Physical-chemical properties

ASTM A254 e NBR 14666

Insoluble internal residue max 12 mg/sqm

Soluble internal residue max 28 mg/sqm

Total internal residue max 40 mg/sqm

NBR 14667
Internal moisture max 50 mg/l

NBR 14668
Chemical reactivity

NBR 14669
Compatibility with R134a gas max -36 °C


Mechanical characteristics

Tensile strength ≥ 290 MPa

Yield strength ≥ 170 MPa

Elongation ≥ 14%

Hardness max 80 HR 15 T

Hydrostatic resistence ≥ 725 psi

Expansion max25%

SUPPLY CONDITIONS
  • Dimensional tolerances according to EN 10051
  • Special tolerances upon request
  • Control documents 2.1, 2.2, 3.1, 3.2 according to EN 10204 and other specific norm requirements

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