Home Page DUCTILE IRON GRATINGS AC 21 AC 21 EXPLANATION DOUBLE - LOCKS 180° OPENİNG DOUBLE JOINT RUBBER BASED BLACK BITUM PAINTING CODE TYPE STRENGHT CLASS DIMENSIONS A B C-D E H CANAL KG 3 B119 Oval 250kN C250 300 500 280-480 370 110 290-490 27