Gray Circle,Color Nbr Oil Seal,Auto Skeleton Oil Seal,Viton Skeleton Oil Seal Dongguan Guo Hao Seals Technology Co;Ltd , https://www.ghrubberseals.com
With 10 years experience, more than 80,000 sqm production area and 90 technical workers LURUN had sold out more than 5 million pieces manhole covers in year of 2016. 
Class
Application Area
Class A15
green belt, no motor vehicles on sidewalks and other areas
Class B125
sidewalks, non-motor vehicles, car parking and underground parking.
Class C250
residential district, street and lane, only light vehicle or car traveling area, the road on both sides of curbs within 0.5m
  Class D400Â
City main road, roads, highways and other areas.
  Class E600
freight stations, docks, airports and other areas
 Class F900
airport runways and other areas.
It was made from pure resin and poly fiber with steel frame inside.
This innovative material can provide a high quality standard of using
We cover a 50 thousand square meter plant who now is the most professional manufacturer of composite infrastructure products.
There are 12 hydraulic pressure machines ranges from 200 tons to 1,600 tons and more than 500 molds for different products,
 a 100 tons' load capacity testing facility.
Our composite manhole covers is well used in Real Estate Project,Road Safety area and Power plant.
Zibo LuRun Building Materials CO.,LTD. is located in Zibo city, the tourist destination of Shandong Province. The company is founded in 2000, with 50 millions registered capitals. The company is specialized production enterprise which the research, development, production, sale of the energy-saving materials as a whole.
If you have any questions, contact me!!!
A15 SGS Passed Road Composite Grating
A15 SGS Passed Road Composite Grating
As one of the largest and  professional manufacturer of composite products such as FRP/Fiberglass Manhole Covers, Gratings, Trench covers etc. We LURUN Construction Materials Co., Ltd. assure you the most competitive price, best quality manhole covers. Â