We have 5052 marine grade aluminum alloy sheet surface quality has been a measure of standards, and in strict accordance with the implementation of this standard, the customer can also judgement the purchase of their own aluminum alloy sheet whether to meet the standards.
1, the surface does not allow to have cracks, corrosion spots and nitrate traces.
2, the surface allows the depth of not more than the location of the wall thickness about nominal size of 8% of the skin, bubbles, surface rough and local mechanical damage, but the maximum depth of defects can not exceed 0.5mm, the total defect area does not exceed the total area of the board 5%.
3, allowing the aluminum supplier along the profile longitudinal lighting to the surface smooth.
4, other requirements: the demand side and the supplier to develop their own.
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