Ductile iron manhole cover quote
编辑：四川井盖厂家 时间：2019-11-01 Source: Unknown Editor: Sichuan Manhole Cover Manufacturer Time: 2019-11-01
球墨铸铁井盖报价,由于市场变动比较大，请电话进行详细咨询]球墨铸铁井盖的特点： [ Nodular cast iron manhole cover quote, because the market is relatively large, please call for detailed consultation ] Characteristics of nodular cast iron manhole cover:
Good toughness. The impact value of medium carbon steel is very fine, more than 10 times that of gray cast iron.
Strong corrosion resistance. In the water spray corrosion test, the 90-day corrosion amount is only 1/40 of the steel pipe, which is 1/10 of the gray iron pipe. The service life is twice that of the gray iron pipe and five times that of the ordinary steel pipe.
Good plasticity. Elongation ≥ 7/100, similar to high carbon steel, while gray cast iron material has zero elongation.
high strength. Tensile strength ób≥420MPa, yield strength ≥300MPa is the same as that of low carbon steel, which is three times that of gray cast iron material.
The strength of nodular cast iron is comparable to that of cast steel.
Ductile iron has a high yield strength, with a yield strength of at least 40k, while the yield strength of cast steel is only 36k. In most municipal applications, such as water, brine, steam, etc., the corrosion resistance and oxidation resistance of ductile cast iron exceeds the corrosion resistance and oxidation resistance of cast steel. The main application areas are: municipal roads, highways, communications, electricity, water conservancy, communities, schools. Various parks.
Better anti-theft and security performance:
Ductile iron manhole cover tweezers have similar tensile strength and pressure resistance to steel, so they are called cast steel. Compared with traditional gray cast iron, its elongation is greatly improved, its toughness is good, and it is not easy to break. It has better anti-theft performance than ordinary cast iron manhole covers, and its overall performance is far superior to ordinary cast iron manhole covers.
Because the patent structure can prevent noise, no sound will be emitted when the manhole cover passes, and it will not disturb people anymore.
There is no doubt that the quality of nodular cast iron manhole covers is far superior to other manhole covers.
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