Leichtmetallgießerei Ing. Walter Koch & Sohn Aluminium-Gießerei is rated 3 out of 5 in the category mining & metals. Read and write reviews about Leichtmetallgießerei Ing. Walter Koch & Sohn Aluminium-Gießerei. Leichtmetallgießerei Ing. Walter Koch & Sohn Aluminium-Gießerei is a mining & metals company based out of 14 Straße 22, Berlin, Germany.