Manhole Cover and Frame

Model Number: DL-MC-04 Brand Name: As per customer's requirement Key Specifications/Special Features: Manhole cover and frame1. Material: ductile iron GGG500-72. Dimensions (mm): overbase 850*850, clear opening 600, height 1003. Surface treatment: black bituminous paint or epoxy paint4. Packing: wooden pallet5. Feature: embedded lockAdvantage:1----Anti-theft: cover and base frame integrate connection, hinge-type opening, sledgehammer hit not break it, completely anti-theft2----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 use3----Corrosion resistant: sewer internal environment complex, filled with various chemical substances, ductile iron does not suffer chemical corrosion, service life more than 30 years4---- Opens conveniently: lightweight, 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