gray silver metallic background - metal texture

abstract abstracts aged alluminum aluminium aluminum backdrop background backgrounds banner black board brushed clean closeup copy copyspace damage dark design engineering foundry frame gray grey grunge hard heavy highlight image images industrial industry iron ironworks light manufacture material materials metal metallic metallurgical metallurgy mill old panel pattern plant plate polished reflecting reflection reflective rust rusty scratch scratched scratches sheet shining shiny silver silvery sleek smooth space stainless steel steelworks structure