Product Description

****-Anti-theft: cover and base frame integrate connection, hinge-type opening, sledgehammer hit not break it, completely anti-theft.

****-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!

****-Corrosion resistent: Sewer internal environment complex, filled with various chemical substances, ductile iron does not suffer chemical corrosion, service life more than *0 years.

****- Opens conveniently: light weight, single unarmed can be open, convenient to open!

****-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.

Applications:(1) Electric power pipeline well; post, telecommunication, communication pipeline well;

(2) Street lamp well, fire control well, all kinds of valve wells; (3) City water, drainage pipeline well; heat supplied, gas well;(4) As cover board for anti-corrosion project, open ditch

corrosion project, open ditch;