... WPB ANSI B16.9 standard: ASTM, ASME, GB, JIS,DIN, BS ISO9001/9002 ItemCatalogDescription1ProductsFlange,Elbow,Tee,Reducer,Cap ... ,Stainless steel,Alloy Steel4Material GradesA234 WPB,A106,A53,API 5L,A105,A333Cr6,A333Cr3 etcA234 WP11/12/5/ ... SCH STD,SCH XS,SCH XXSClass 150----Class 60009StandardASME,JIS,DIN,GB,etc10CertificateISO9001 ISO14001 CE11SurfaceBlack painted, Galvanized,3PE12Placeof OrignCangzhou ...