Композитный Крышка люка-люк-пластик Мань

Round manhole cover Size: dia700mm Load Ability: D400 (40Ton) Compared with traditional caste iron manhole cover, our composite manhole cover have following advantages: 1. No recovery value---It will solve the manhole cover-stolen problem thoroughly. 2. High load capacity---Its high load capacity exceeds the ductile iron. 3. Free-design---It can be designed according to users’ demands, including color, pattern, specification. 4. Long service life. 5. Well sealed----it can be used hermetically, and effectively prevent those poisonous gases leaking out from cesspool. 6. No any jangle----There is neither jangle nor rebound when cars pass through. 7. Good wear and corrosion resistance----It will never rusts because it has good wear and corrosion resistance.