square frame with inner round cover

Our composite materials manhole covers are suitable for a huge range of applications that include: 1. Underground Electrical Installations: Draw pits, traffic lights, street lighting, Fiber optic cable ducts etc. 2. Telecommunication: Connection chambers, Water, Gas, Petrochemical Installations. Advantages of our products 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, reasech to 60 ton, with A15(1.5 ton) B125(12.5ton), C250(25 ton), D400(40ton) 3. Free-design_It can be designed according to users'demands, including color, pattern, specification. 4. Long service life_It can be used more than 30 years and there is no any crack in the experiment of 2, 000, 000 fatigue shocks. 5. Well sealed_We could design and install device, 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 reistance_It will never rusts because it has good wear and corrosion resistance. 8. Price: USD $10-90 and give a discount accordinmg to clients quantity. 9 Quality: Abosultely satisfy with customers'requarements, and passed ISO9001: 2000 and SGS CERTIFICATE