2.
It adopts macromolecule complex material and reinforcing steel bar molded by high temperature and press at one time. Its highest inspect result is 54 tons, accord with Construction Department of Peoples Republic of China CJ/T211-2005 Criterion.
2.Longevity
Acid-alkali and corrosion resistance; anti-rust; insulation; anti-abrasion; weatherability; excellent anti-pressure capability.
3. Light Weight:
This kind of material has no recycle worth so it was burglarproof.
At the same time it has locked construction design, it avoid the goods in the well being stolen and avoid City Black Hole accident.
4. Beautiful Show:
Manhole cover's external pattern has fine design; it can be made in many colors to beautify the environment.
5. Competitive price
The price of compound manhole cover is lower than stipulated standard cast iron ones.
6. Anti-theft
Non-recycle, anti-theft naturally; the lock attachment can prevent tunnel products from losing, therefore city black hole can be stopped totally.
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