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1.All the GRP composite manhole cover are excellent electrical insulation resistance ,arc resistance and signs of leakage.2.The SMC manhole cover are excellent mechanical strength ,flame resistance and heat resistance.3.The environmental FRP manhole cover are non-recycle value for anti-theft.4.Anti acid ,alkali and chemeical corrosion,impact resistance ,anti-rust,water-ability,durable (30~50 years),locking option.When damaged,no holistic hole,avoids sudden accident.Use the superfine calbonate ,good density.5.The light-weight manhole cover only 1/3 weight of the cast iron one ,and 1/2 of the BMC with steel one.6.Anti-theft composite manhole cover are convenient transportation and installation reduce work intensity.7.With fashionable-design all the manhole covers' physical appearance are beautiful,smooth,no distort ,easy to open.Unique multi-directional stop resisttant tread pattern.8.The advantage of the drain covers noise is very low and rebounding free when car roll on.9.With perfect decoration effect and the beautiful color will be the right one that meet the clients' requirement.
GRP 700mm Round Manhole Cover