Product Introduction of Nodular cast iron manhole cover
The application of nodular cast iron manhole covers has played a very important role in the municipal construction of our city.
Characteristics of nodular cast iron manhole cover
1) Good toughness. The impact value of nodular cast iron manhole cover is detailed with medium carbon steel, which is more than 10 times that of gray iron material.
2) Strong corrosion resistance. In the water spray corrosion test, the amount of corrosion in the 90-day period is only 1/40 of the steel pipe, which is 1/10 of the gray iron pipe. The service life is 2 times that of gray iron pipes and 5 times that of ordinary steel pipes.
3) Good plasticity. The elongation of nodular cast iron manhole cover is ≥7%, which is similar to that of high-carbon steel, while the elongation of gray iron materials is zero.
4) High strength. Tensile strength ób≥420MPa, yield strength ós≥300MPa, which is the same as low-carbon steel, and is three times that of gray iron material.
The strength of nodular cast iron is comparable to that of cast steel. Ductile iron has a higher yield strength, with a minimum yield strength of 40k, while the yield strength of cast steel is only 36k. In most municipal applications, such as: water, salt water, steam, etc., the corrosion resistance and oxidation resistance of ductile iron are better than cast steel.
5) The low cost of nodular cast iron manhole cover makes it more popular, more efficient in casting, and less machining costs.
6) Nodular cast iron manhole cover has a higher yield strength, with a minimum yield strength of 40k. In most municipal applications, such as: water, salt water, steam, etc., the corrosion resistance and oxidation resistance of ductile iron are better than cast steel.
The following is one of our nodular cast iron manhole covers:
1) Model No. BC.D-A99
2) Sizes: 600x600mm
3) Weight: 35.5kg
4) Shape: square
5) Standard: EN124 B125
6) Logo: can be customized.
7) Surface treatment: black bituminous paint if no special requirements.
8) Packing: in iron pallet and plastic film if no special requirements.
9) Load quantity in a 20'container: 650pcs.
