In the so-called heavy refers to the factory inspection allowed pressure 360kN or supersteam -20 main vehicle; Light refers to the allowable pressure 210kN or steam-10 class main vehicle.
Add special roads and sites such as heavy-duty airports or highways for helicopter takeoff and landing
Urban roads, highways and parking lots for heavy motor vehicles
Ordinary slow lane, residential area access and access road
Light green belts and lanes, roads and fields where motor vehicles cannot be used or parked
Carrying capacity index:
Plus heavy duty ≥ 3601/500xd
Heavy duty ≥240 1/500xd
Common type ≥ 1001/500xd
Light weight ≥ 201/500xd
Manhole cover, used to cover the road or home deep well, ductile iron manhole cover to prevent people or objects from falling. According to the material can be divided into metal manhole cover, high strength fiber cement concrete manhole cover, resin manhole cover and so on. Generally, a circle is used. It can be used in green belt, sidewalk, motorway, dock, alley, etc
1, Fast demoulding, in the production process can be separated at that time, can be uninterrupted continuous production, dozens of times higher than other mold production.
2, Long service life, made of special steel plate, can be used tens of thousands of times.
3, The product appearance clean, size standard, surface pattern, text, according to the requirements, replacement at any time.
4, Because of the good shock resistance of the steel mold, the compression resistance of the products produced by it is enhanced, and the damage load is greatly increased.
5, Easy to use, light weight: the product weight is only about one-third of cast iron, cast iron manhole cover technical requirements for easy transportation, installation, rush repair, greatly reducing labor intensity.
6, Anti-theft: resin check manhole cover has no recycling value, natural anti-theft; According to customer needs and with a locking structure, to realize the well property anti-theft.
7, Strong weather resistance: resin check manhole cover through scientific formula, process, perfect technical equipment so that the product can be used normally in -50℃ ~ +300℃ environment.
8. Acid and alkali resistance, corrosion resistance, wear resistance, vehicle rolling resistance, long service life.
Applications:
Ductile iron castings have been used in almost all major industrial sectors, which require high strength, plasticity, toughness, wear resistance, resistance to severe thermal and mechanical shock, high or low temperature resistance, corrosion resistance and dimensional stability. In order to meet these changes in the conditions of use, ductile iron is available in many grades, providing a wide range of mechanical and physical properties.