Locking manhole covers 1,Standard:D400 2,Loading:340pcs/20ft container 3,ISO9001 4,Export Middle east special cover Cast iron manhole cover Export Special Manhole Cover Ductile Iron Manhole Cover EN124 D400Specificate : Material: GGG50Frame size : 850*600mmHeight : 100mmWeight : 65kgs Lock: Auto lock Rubber Ring Packing :Pallet with steel tie , Outside use plastic bag cover MOQ: 100pcs