Quality
control
To achieve a high manufacturing quality, the impressive parameter list is controlled:
1
Spectral control of tube strip (composition of steel SS304) and fitting material
2
Dimensional control of tubes (inner/outer tube diameter, number of corrugations per unit length)
3
4
Visual inspection (a dark welding seam and a tube color different from stainless steel color is prohibited)
5
plastic caps
6
Winding coils quality
7
One hundred percent leakage testing of coils (each coil has a label indicating the inspector number; results for each coil are recorded)
To achieve a high manufacturing quality,
the impressive parameter list is controlled:
1
(composition of the steel) and fitting material
5
Cutting tube ends + blanking with plastic caps
2
Dimensional control of tubes (inner/outer tube diameter, number of corrugations per unit length)
6
Winding coils quality
3
Bending control (corrugations must not straighten and unbend)
7
One hundred percent leakage testing of coils (each coil has a label indicating the inspector number; results for each coil are recorded)
4
Visual inspection (a dark welding seam and a tube color different from stainless steel color is prohibited)
World-class product quality
