5052 aluminum plate in the production process requirements is very high.
The aluminum plate surface does not allow cracks or corrosion spots and traces of nitrate.
The aluminum plate is not allowed to have a depth of more than 8% of the nominal size of the wall defects in the skin or bubbles. And the maximum depth of defects required less than 0.5 mm, the total defect area is less than 5% of the aluminum area.
The last point is usually to allow the aluminum alloy sheet plate supplier to polish the profile longitudinally to a smooth surface. The above can be seen on the surface of the 5052 aluminum requirements are very high, so the production process is also required very sophisticated.