Raw material 

(1)inlet dia:10mm outlet dia 10mm,

(2)Al foil thickness: 0.13-0.2mm

Application

refrigeration parts

Structure

(1)pull and expanded type 

(2)slant inserting type

Key process

prepare the material→starving tube and shaping→inserting fins and 

enlarging tube→ leakage test→keeping pressure→packing

Performance

(1)Surface treated with powder coating to prevent corrosion

(2)Inner cleanness can meet the requirement of R134a and CFC cooling system

(3) Can satisfy the cooling capability requirements of the designed refrigerator.

Producing capability

6 million sets per year

R134a cooling system tube inside standards:

Residual moisture 

≤20mg/m2

Residual impurity

≤30mg/m2

Residual mineral oil

≤7mg/m2

Residual chlorine

≤0.3mg/m2

Residual paraffin

≤0.2mg/m2

Specification of coating 

Coating thickness

Thickness of flat plate or tube powder painting: 30-100 um

Hardness of coating

 ≥2H

Impact of coating

50 cmkg/cm impact, no crack

Adhension of coating 

≥two grade

Flexibility of coating

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

Color tolerance of powder painting

E≤15