——Design Unit: Qilu Petrochemical Design Institute——Project Name: Hebei Haiwei Petrochemical 500,000 Tons Propane Dehydrogenation Project——Product name: Three major piping systems——Product specifications: DN2200 (maximum caliber)——Product material: WP321H, F321H, WP11, F11, WP310S, F310S——Number of prefabricated parts: 205 sets——Prefabricated parts include parts and components: pipe fittings, flanges, elbows, steel pipes, gaskets——Number of prefabricated parts: 5210