ZIBO BAOGAI BUILDING MATERIALS CO., LTD.  is a Science and technology key-supported Corporation of Shandong province.We can produce new type burglarproof manhole cover. At the same time we are a professional enterprise which our productions are various and high Yield.
BAOGAI-MADE manhole cover is made of mold-press macromolecule, which is National patent. It adopts BMC, SMC colophony etc. material molded by high temperature at one time.
Our products have a lot of advantages such as high density, high rigidity, and high pressure, anti-corrupt, anti-aging, light weight and beautiful show. Inspected by National authoritative department, BAOGAI-MADE manhole cover can bear 50 tons and many indexes of it exceed national criterion and many other domestic manhole covers. It is adapted to city planning projects and fast lane.
BAOGAI-MADE manhole cover is sold nation-widely and exported to Korea, Spanish, Saudi Arabia Taiwan etc. It is the best replacer of cast-iron manhole cover.
     Productions' specialty: high density, high rigidity, and high pressure, anti-corrupt, anti-aging, light weight and beautiful show.
1.  High Intensity:
     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.?Beautiful Show:
      Manhole cover?s external pattern has fine design; it can be made in many colors to beautify the environment.
3.?Light Weight:
    It weight only 1/3 of cast-iron manhole cover, more expediently transport, install, and rush to repair, lighten the work intensity.
4.  Burglarproof :
     This kind of material has no recycle worth so it was burglarproof.
     At the same time it has locked construction design, it can make the goods in the well avoid stolen. Avoid City Black Hole accident.
5.  Climatic resistant: