Quality Control
We promise product quality and long-term cooperation with customers
Quality control
Quality Inspection Process
In order to ensure zero-defect production of products, we have established a complete product quality management process and realized process control of color-coated products.
Warehouse acceptance for hot-rolled coils
Confirm whether the order requirements match the raw material grades
Galvanized inspection
Zinc layer weight, zinc layer thickness, adhesion, surface treatment, spangle style(zero or big spangles) etc.
Substrate Inspection
Appearance, strength, material, grade, etc.
Prepainted inspection
Coating thickness, coating surface quality, coating thickness, pencil hardness, impact, etc.
Standardized Detection Method
We use a variety of testing equipment to ensure the quality of products
Bending Test
Check the adhesion of the coating to the steel substrate after bending
Pencil Hardness Test
Check the softness and hardness of the paint film
Color Difference Test
Check whether the coating color meets the product requirements
Hardness Testing
Check the hardness of the substrate to see if it meets the product specification requirements
Salt Spray Test
It is suitable for evaluating the corrosion resistance of color-coated panels in neutral salt spray.
Product Aging Test
The aging resistance of color-coated panels was tested by simulating the artificial environment climate.
Coating thickness test
Check the coating thickness of baking varnish products
Stretching Test
Test product tensile strength, yield strength, elongation
Gloss Test
Check whether the surface gloss of the coating meets the standard
Reverse impact and checkered
Evaluate the ability of the coating to resist cracking or falling off when the color-coated plate is subjected to rapid deformation (reverse impact). Check the adhesion between the coating and the substrate
