How to do a good job in the inspection of cast iron ditch cover plate? Cast iron ditch cover plate is mainly made of nodular cast iron. The quality of this kind of well cover involves the problem of spheroidization rate. The common architectural coating to solve the problem of castings is the anti rust treatment epoxy zinc rich primer. The surface of natural nodular cast iron well cover is also solved by the anti rust treatment epoxy zinc rich primer after painting. One advantage of cast iron trench cover plate is that the high compressive strength and good ductility of nodular cast iron make the nodular cast iron well cover 30% lighter than the same kind of gray cast iron well cover.

Ductile iron drainage ditch cover plate

The back cover plate of cast iron ditch cover plate is widely used in municipal management because of its excellent characteristics. When installing cast iron trench cover plate, we must do a good job in the inspection of cast iron trench cover plate.

1. In the case of installing cast-iron ditch cover plate, in order to better install the convenient well cover, you can wet the silicon rubber ring with tap water first; The lubricating grease is edible oil, which is better; In winter, the silica gel ring can be heated with boiling water to reduce the strength and quickly install the ductile iron pipe.

2. When installing cast iron trench cover plate, we shall strictly follow the whole process of standard project construction to ensure that each nodular cast iron pipe is installed in time. For large-diameter pipeline, the condition of each socket rubber ring shall be checked; During the whole construction process in summer, fill the soil appropriately at the socket; Concrete buttress must be made for tee and elbow.

3. In the case of installing the cast-iron ditch cover plate, it must be noted that if you want to borrow during the pipeline installation, you can use the borrowing angle of the pipeline itself. If the borrowing angle cannot be met, you can cut the socket of the pipeline with laser after calculation according to the angle of view to be borrowed, which can not only expand the borrowing angle of view, but also ensure the safe application.

4. If there is no reason to use tap water for hydrostatic test, gas hydrostatic test can also be considered; The backfill for trench excavation shall be compacted in layers. If the pipeline crosses the road, coarse sand can be backfilled to the pipe top to prevent crushing the pipe body; Socket leakage sometimes occurs at the construction site.

Cast iron ditch cover plate is mainly used in various industrial parks such as urban roads, highways, communications, power engineering, drinking water, residential quarters, colleges and universities. Main uses of nodular cast iron manhole cover: it can be used in power supply, sewage pipeline, sewage inspection well, heating, natural gas sewage inspection well, postal express, telecommunication network, communication optical cable pipe well, power engineering pipeline well, road street lamp well, fire safety well, various rainwater wells, anti-corrosion and thermal insulation works, open ditch cover plate, And can carry out production and manufacturing according to the unique needs of customers. Nodular cast iron manhole covers are generally divided into ring and square. At the level of traffic law enforcement in urban areas, ring is generally selected. Because the ring manhole cover is not easy to skew, it can well maintain the safety of passers-by and vehicles.

Performance parameters test load: medium and heavy 400kN, common 250kN and light 125kN

Bending strength: mean 22Mpa impact compressive strength: mean 10J / m2

Alkali resistance: 20% of the test piece

Soak in sulfuric acid solution for 48h

Surface corrosion resistance, quality damage 1%

Compared with the previous cast iron raw materials, cast iron ditch cover plate not only inherits the advantages of cast iron materials such as hardness, compressive strength and not easy to deform, but also has its own unique rigidity (not easy to crack after deformation). Therefore, nodular cast iron is an upgraded commodity of the original cast iron commodities, with significant advantages. It has been widely used in residential areas, production lines and other industries in daily life