1. Look at the surface of the profile

When we receive aluminum profiles, we first need to observe the surface of the profiles to see if there are any bubbles, scratches, dirt, etc. Before shipment, we must carefully inspect to ensure the qualification rate of the aluminum profiles.

2. Inspection from thickness

The bearing capacity of aluminum profiles is determined by their thickness. The thickness of aluminum profiles is not visible to the naked eye and can be measured using a vernier caliper. Shapes that do not meet the thickness requirements cannot be shipped.

3. Surface color degree

The surface color of high-quality aluminum profiles is very uniform, and most aluminum profiles are silver white. Customized aluminum profiles can have various styles, and good primary aluminum produces uniform colors without darkness.

4. Is there an oxide film on the surface

Good aluminum profiles will have an oxide film on their surface, which can effectively protect them and improve their corrosion resistance. Poor quality aluminum profiles have a thinner oxide film on their surface, making them susceptible to damage.