500*340*63 SMC Manhole Gully Grating Cover C250 /rectangle Manhole Cover /SMC Manhole Cover
Specifications
500*340*63 SMC Manhole Gully Grating Cover C250 SMC manhole coverLoading capability:C250
Material:SMC
Advantages
1. Anti-theft: cover and base frame integrate connection, hinge-type opening, sledgehammer hit not break it, completely anti-theft.
2. Load-bearing great: the toughness of ductile iron is fourfold that of ordinary cast iron, close to steel materials, suitable for all kinds of road use!
3. Corrosion resistent: Sewer internal environment complex, filled with various chemical substances, ductile iron does not suffer chemical corrosion, service life more than 30 years.
4. Opens conveniently: light weight, single unarmed can be open, convenient downhole maintenance!
5. Superior safety performance: It often occurred underground explosion accident, fly up covers scarred passers-by , manhole covers integration connections will not depart from the ground.

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