abstract welded metal sculpture like a tunnel. stable steel construction shos off different stages and s of metal working

abstract aircraft airplane aluminum architecture assembled backdrop background black cold components composition concept construction contemporary cross design dirty equipment fade fillet floor fragment fusion gray grid grunge grungy heat heavy hightech icon industrial industry inlay interior iron ironworks joint line machine material metal metallic panel pattern plate protective reflection riveted sealed seam shape sheet shiny silver solder soldered square steel stripe structure style surface template texture textured tough wall wallpaper weathered weld welded welding