Requirements for the surface quality of the titanium plate

The surface of the titanium plate should be smooth and metallic.  Plates are allowed to be delivered on sandblasted surfaces.  Slight darkening and local water marks are allowed on the surface of the titanium plate.  Local defects, scratches, indentations, pits, etc. not exceeding half of the thickness tolerance are allowed, but minimum thickness should be guaranteed.  The surface is not allowed to have cracks, peeling, scaling, folding, metal and non-metal inclusion and other macroscopic defects and traces of alkaline washing.  The titanium plate allows clear local defects along the rolling direction, but the thickness of the plate after removal is not less than the minimum allowable thickness.   

In addition, titanium plates should not be stratified.