Ibabaw ng kalidad ng aluminyo tread plate
(1) Ordinary accuracy: the surface of the aluminum plate is allowed to have a thin layer of iron oxide scale, at ang ibabaw pagkamagaspang at taas o lalim ng ibabaw na nabuo sa pamamagitan ng bakal oksido scale pagkahulog off lumampas sa pinapayagan paglihis at iba pang mga lokal na depekto. Insignificant burrs and individual marks whose height does not exceed the height of the pattern are allowed on the pattern. The maximum area of a single defect does not exceed the square of the grain length.
(2) Higher accuracy: The surface of the aluminum plate is allowed to have a thin layer of iron oxide scale and other local defects whose height or depth does not exceed half of the thickness tolerance.