Ductile Iron Manhole Cover : 1. Class: A15, B125, C250, D400, E600 and F900. 2. Design Standard: BS EN124:1994. 3. Material grade: GGG500/7. 4. Test: testing before shipping for the smooth surface and loading. 5. Coating: coating black bitumen, or coating as customers' requirements. 6. Certificate: BSI Kite Mark, SGS, ISO9001,BV... Available Design: 1. Ductile Iron 2. Hinge Type 3. Single seal / Double seal 4. Lock 5. Closed key hole 6. Recessed type 7. Two lifting Key holes 8. Double triangular 9. Cut-corner Design Material of Manhole Cover :
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