Specifications:
1) Raw material:
a) Rolling welded steel tube: 4.76 ~ 6.35 x 0.71
b) Bracket: steel plate SPCC thickness 0.6 ~ 2.0
c) Base mounting plate: SPCC thickness 0.6 ~ 0.8
2) Technical standards: can produce according to clients' drawing or
samples
3) Performance:
a) Surface with electrophoresis coating to prevent the corrosion
b) Inner cleanness can meet the requirement of R134a and CFC cooling system
c) Can satisfy the cooling capability requirements

Structure:
Steel tube welded with the steel plate

R134a cooling system tube inside standard:
1) Residual moisture: ≤20mg/m2
2) Residual dusty: ≤30mg/m2
3) Residual mineral oil: ≤7mg/m2
4) Residual chlorine: ≤3mg/m2
5) Sealing density: ≥1.65MPa

Specification of E-coating:
1) Coating thickness:
a) Thickness of anodic electrophoresis coating ≥12μm
b) Thickness of cathodic electrophoresis coating ≥20μm
2) Hardness of coating ≥2H
3) Impact of coating: 50cm.kg/cm impact, no crack
4) Adhesion of coating: ≥2 grade
5) Flexibility of coating: around R=3D bend 180 degrees, no crack or no fall off
6) Corrosion resistant (salt spray GB2423)
a) Anodic electrophoresis coating ≥24h
b) Cathodic electrophoresis coating ≥96h