I believe everyone will choose to walk around the manhole cover when passing by! But do you know the bearing capacity of Shandong ductile iron manhole cover? So now with Jinan Wanshun Casting Co。, Ltd。 to understand it!
The ball milling well cover is made of nodular cast iron QT500-7, which makes the product have strong compression resistance, bending resistance, impact resistance, heat resistance, cold resistance, wear resistance, acid and alkali resistance, aging resistance, corrosion resistance, not easy to deform and other characteristics, as well as anti-noise, anti-theft, anti falling, anti jumping, anti slip and other characteristics.
To prevent erosion and extend the service life of the pipe network, the outer surface of the ball mill cover shall be coated with a layer of asphalt paint. In order to further enhance its corrosion resistance, zinc spray treatment is needed on its outer surface.
In order to ensure the quality of zinc spraying, the best effect of zinc spraying should be carried out after the completion of heat treatment and when the pipe body itself has a certain temperature. In order to prevent the scaling on the surface of the ball mill cover, increase the resistance of water delivery and reduce the service life of the pipe network, the water delivery pipe should have a cement lining. To ensure the quality of its factory and the reliability of its installation when the pipe network is in use, it is necessary to carry out hydraulic test and inspection one by one according to the scale specified in ISO2531.
In order to ensure the surface quality of the cover and the installation size of the socket, the socket and the inner wall of the cover need to be polished and cleaned to ensure its installation and the requirements of the next process.
The strength of nodular cast iron is comparable to that of cast steel。 Ductile iron has higher yield strength, the lowest yield strength is 40K, while the yield strength of cast steel is only 36K。 In most municipal applications, such as water, salt water and steam, the corrosion resistance and oxidation resistance of nodular cast iron are higher than that of cast steel。
I believe that you should also have a better understanding of the corrosion resistance of the product。 If you can have some understanding of the overall performance of the product, you can be more assured when using it。 To sum up, we have an understanding of the anti-corrosion effect of nodular cast iron manhole cover。 It is produced in strict accordance with the requirements and will not be easily affected by corrosive substances。 Its one-layer galvanizing and technology will play a protective role on the product。 The service life is relatively long, so users can use it at ease。
The above is an introduction to the bearing capacity of ductile iron manhole cover by Jinan Wanshun Casting Co., Ltd. welcome to http://www.kpp647.com