Vertical, double-walled storage tanks made of steel or stainless steel are built according to abZ 38.12-260 and 38.12-270 and are approved for the storage of water-polluting liquids according to DIN 6601 up to a density of 1.6 kg / dm³. The double jacket is prepared for the installation of a vacuum leak warning device, which we offer you separately with your project. The containers are designed for outdoor installation for wind loads and snow loads up to Zone 2 according to DIN 1055.