180180 degree stainless steel elbow of high temperature pressure part and vertical centrifugal casting method thereof. Through the improvement and optimization of the vertical centrifugal casting process, the elbow products obtained show extremely excellent high temperature short-term mechanical properties and high temperature endurance mechanical properties, which are not only significantly superior to the static castings, but also significantly superior to the products obtained by the conventional centrifugal casting process. This feature enables the product to further extend its service life and reduce its scrap rate under high temperature application environment, and is conducive to application under higher environmental requirements.