Abstract: A high pressure container includes a casing disposed in a housing and spaced from the housing for forming a peripheral space between the housing and the casing, the casing includes a compartment and spaced from the peripheral space that is formed between the housing and the casing, and a pressurizing device is connected to the compartment of the casing with a pipe for supplying a heated or pressurized air into the casing in order to heat or pressurize the work piece to the required higher pressure or temperature, and the pressurizing device is coupled to the peripheral space that is formed between the housing and the casing with a tube for supplying a pressurized air into the peripheral space for balancing the pressure.