... size:DN15-DN1000 materail:ss,cs coating:rust proof oil Carbon Steel Forged GOST12820-80 PN6 plate RF Russian Standard ... PROOF OIL,YELLOW PAINT,GALVANIZED ,BLACK. PACKAGE: PLYWOODEN CASE PACKAGE,,WOOD PALLET PACKAGE Remark: 1)GOST 12820:PLATE FLANGE GOST 12821 ... ,PLATE,BLIND,THREADED6) SABS1123:SLIP ON ,WELDING NECK ,PLATE,BLIND Carbon Steel Forged GOST12820-80 PN6 plate RF Russian Standard flange