texture of stainless steel, perforated sheet metal

abstract aluminum architecture backdrop background brushed chrome circle circles closeup construction convexmetalsheet design form galvanized geometricpattern grate graymetal grey grid grill grille hole holes industrial iron lines material mesh metal metalgrid metallic metalmeshtexture metaltexture oldmetal pattern perforated perforatedmetalsheet plate rust seamless sheet shiny silver steel surface technology texture textured wall