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Our quality control

Release time:2019-09-19

Our QC

In terms of quality control, full-time inspectors are set up in each process to inspect product quality and ensure product quality is controlled from the production process. The following is the introduction of product inspection process.


4.1Inspection process of pickling process


4.1.1Product specification inspection :

After the product is taken off the line, the quality inspector shall use the steel ruler with an accuracy of 1mm for regular measurement and inspection


4.1.2 Product panel inspection

The panel quality of the product shall be visually inspected by full-time quality inspectors according to the quality inspection standards.


4.1.3Product level inspection

Based on the above inspection results, the quality inspector shall determine the product grade according to the "product grade standard", and then pack and store the products.


4.2Mill process inspection process


4.2.1Product specification inspection :

Product width: the quality inspector USES the steel ruler with an accuracy of 1mm for regular measurement and inspection.

Product thickness: the production line is equipped with an online thickness gauge, and the quality inspector shall measure and check regularly with an accuracy of 0.01mm micrometer.


4.2.2Product panel inspection

The panel quality of the product shall be visually inspected by full-time quality inspectors according to the quality inspection standards.


4.2.3 Product type inspection

In the normal rolling process, the quality inspector inspects it with stick.


4.2.4Product level inspection

Based on the above inspection results, the quality inspector shall determine the product grade according to the "product grade standard", and then pack and store the products.


4.3Inspection process of galvanizing process


4.3.1Product specification inspection :

Product width: the quality inspector USES the steel ruler with an accuracy of 1mm for regular measurement and inspection.

Product thickness: the production line is equipped with an online thickness gauge, and the quality inspector shall measure and check regularly with an accuracy of 0.01mm micrometer.


4.3.2Product panel inspection

The quality of the board shall be visually inspected by full-time quality inspectors according to the quality inspection standards.

After the product is offline, intercept 0.2m sample placement platform for visual inspection.


4.3.3Product type inspection

Visual inspection at production process platform.

The product is taken off the production line, and the 0.2 meter long sample is placed on the inspection platform for inspection with a feeler.


4.3.4Product performance inspection

Thickness (the production line is equipped with online zinc layer thickness gauge)

Tensile test

Bending test

Impulse test

Salt spray test


4.3.5Product level inspection

Based on the above inspection results, the quality inspector shall determine the product grade according to the "product grading standards", paste the qualification certificate, and package and store the products.


4.4Color coating process inspection


4.4.1Product specification inspection :

Product width: the quality inspector USES the steel ruler with an accuracy of 1mm for regular measurement and inspection.

Product thickness: the production line is equipped with an online thickness gauge, and the quality inspector shall measure and check regularly with an accuracy of 0.01mm micrometer.


4.4.2Product panel inspection

The quality of the board shall be visually inspected by full-time quality inspectors according to the quality inspection standards.

After the product is offline, intercept 0.2m sample placement platform for visual inspection.


4.4.3Product performance inspection

Coating thickness

T-bending test

Impulse test

Color test

MEK

Pencil hardness test

Dash test

Gloss test

Aging test


4.4.4Product level inspection

Based on the above inspection results, the quality inspector shall determine the product grade according to the "product grade standard", and then pack and store the products.


4.4.5Test detection

The professional coating and color plate testing center has professional testing instruments: salt spray test box, color plate film thickness detector D.J.H, high and low temperature test box, heat and humidity resistant box, ultraviolet aging test box and so on, which can test all items of color coated plate.



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