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Raw Material

1)Rolling welded steel tube : Out Diameter 4.76mm-6.35mm , Wall Thickness 0.6-0.7mm;

2)Low carbon steel wire O.D.1.4-1.5mm ;

3)Bracket:Steel Plate (SPCC),thickness 0.6-1.5mm;

4)Steel Plate:SPCC with thickness 0.3-0.4mm;

R134a Cooling System Tube Inside Standards

Residual Moisture

≤20 mg/m²

Residual Impurity

≤30 mg/m²

Residual Mineral Oil

≤7 mg/m²

Residual Chlorine

≤0.3 mg/m²

Residual Paraffin

≤0.2 mg/m²

Specification of Coating

Coating Thickness

Thickness of cathodic electrophoresis coating ≥12 um

Harness of Coating

≥2H

Impact of Coating

50 mg/cm impact,no crack

Adhesion of coating

≥ two grade

Flexbility of Coating

Around R=3D bend 180°,no crack or no fall off

Color tolerance of Power Painting

E ≤ 1.5

Corrosion Resistant

(Salt SprayGB2423)

Cathodic electrophoresis ≥96H