Chongqing ductile iron manhole covers, mainly engaged in the production and sale of wholesale and customization, Chongqing ductile iron pipes and accessories, Chongqing Zhonghai manhole covers of various specifications, ductile iron manhole covers, resin composite products and manhole covers, HDPE double wall corrugated pipes, HDPE reinforced winding pipes type B, hollow wall winding pipes, plastic inspection wells, PE water supply pipes, steel mesh skeleton polyethylene composite pipes, HFB power corrugated pipes, seven hole plum tubes, PVC drainage pipes,...... And other municipal drainage and water supply pipes, customized various profiled galvanized steel grids, stainless steel concealed well covers, stainless steel trench covers, polymer trench covers, plastic steel ladders, well cover nets, pe septic tanks, glass fiber reinforced septic tanks, integrated sewage progress equipment, various cement products and well covers. All the products operated are complete with reliable quality and favorable price!
1. Anti theft
New anti-theft with planning shall be selected, and locks and keys shall be made of high hardness and rust proof brass to avoid rusting of locks in daily use and make the manhole cover unable to open. New type five prevention double layer ductile iron manhole cover, integrated planning of manhole cover and well ring, rotary device lock, has been obtained
National practical new patent.
2. Anti noise
No noise, meeting environmental requirements. Each set of nodular cast iron manhole cover of our company is processed through three procedures, so that the contact surface between the manhole cover and the well ring is zero, so that the two can be 100% seamless, eliminating noise when vehicles pass by. In the planning of new five prevention well cover, new
The planning concept of "V" enables vehicles to hit the edge of the well circle for the first time instead of hitting the well cover when passing through the well cover, so as to avoid the overall sinking of the well cover and effectively solve the problem of "broken edges" around the well cover in the city.
3. Fall prevention
The bearing capacity is strong. During the test, the bearing capacity of nodular cast iron manhole cover was not damaged under the pressure of 500KN, so the bearing capacity was much better than the national standard (360KN). All of them meet the requirements of EU EN124 specification. It can withstand the rolling of various heavy trucks to avoid accidents caused by falling manhole covers.
4. Antiskid
The exquisite casting process makes the product lines clear, and the well cover has a unique anti-skid picture on the surface, adding friction to prevent pedestrians from slipping due to rain, snow and ice
5. Strong bearing capacity
6. Beautiful appearance
The appearance plan can be changed according to customer requirements, and then sprayed with black asphalt to make the product look bright, clean, oxidation resistant and corrosion resistant.
7. Superior material
The material of nodular cast iron QT500-7 is selected to improve the density of the product, so that the product has the characteristics of strong compression resistance, bending resistance, impact resistance, heat resistance, cold resistance, abrasion resistance, acid and alkali resistance, aging resistance, and deformation resistance.
8. Environmentally friendly and noiseless. This product is environmentally friendly and noiseless. The plates and frames are processed by lathe, so that the plates and frames can meet 100% requirements.
9. High load capacity. This product has a load of 360KN600kn and 900kn.
10. Strong ability of anti-theft. This product adopts dual anti-theft planning, which has a better anti-theft function and can effectively ensure the safety of traffic roads.
11. Long service life. The anti-theft and anti noise settings of the product are firm and durable.
