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Inspection process of nodular cast iron manhole cover after construction -
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How to install the ductile iron manhole cover correctly?
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What problems should be paid attention to in Chongqing well cover construction? [2019-06-03] Well covers can be seen everywhere in the city streets. Generally, the covers need to be fixed directly on the asphalt pavement. Therefore, attention should be paid to whether the equipment function of the covers will be affected during and construction. When fixing the covers, mechanical tools should be used for processing. When casting the pavement, suitable areas need to be reserved on the pavement, The whole operation procedure shall be carried out according to the specifications, so as to ensure more stability and reliability after the equipment is fixed. -
Talking about 11 advantages of nodular graphite well cover [2019-06-03] Chongqing ductile iron manhole covers, mainly engaged in the production and sale of wholesale and customization, Chongqing ductile iron pipes and accessories, Chongqing Zhonghai manhole covers of various specifications, ductile iron manhole covers, resin composite products and manhole covers, HDPE double wall corrugated pipes, HDPE reinforced winding pipes type B, hollow wall winding pipes, plastic inspection wells, PE water supply pipes, steel mesh skeleton polyethylene composite pipes -
How to improve anticorrosion performance of nodular cast iron manhole cover [2019-06-03] Cast iron manhole covers have been used for many years. It can be said that the anti-corrosion performance of cast iron manhole covers must be very good. In order to withstand such a test, his anti-corruption performance must be good. To achieve such an effect, strict treatment must be carried out. It is through asphalt coating. Before painting, pipes are preheated to speed up the adhesion of asphalt and dry it quickly, and aluminum aluminate coating. These two processes are very suitable for anti-corrosion coating. Ball mill well cover is a kind of cast iron, It is made of cast iron and spheroidized to spheroidal graphite, which can effectively improve the performance of cast iron, especially improve the plasticity and toughness of the product, and finally reach a strength higher than that of carbon steel. This is the characteristics of our spheroidal graphite manhole cover. With these characteristics, it will be able to withstand various severe tests. -
More and more functions of composite manhole covers in Chongqing [2019-06-03] On the basis of the manhole cover, our composite manhole cover has emerged through the efforts of countless people and professional transformation. The composite well cover has the advantages that previous well covers do not have. It can be applied in all places, and has long service life, excellent quality, and no maintenance problems. The function of composite manhole cover is becoming more and more diversified, which makes its development more and more powerful. Composite manhole cover is frequently used in municipal administration and buildings. -
Talking about the 6 common features of composite well cover [2019-06-03] In the current market, various Chongqing composite well cover manufacturers use different materials, but they still have the same characteristics: 1. Strong anti-theft property: the manhole covers produced by Chongqing composite manhole cover manufacturers are generally made of unsaturated resin, glass fiber and other materials through special production processes. After high-temperature grinding and pressing, the materials have no recycling value, and it is very difficult to take out the reinforcement. -
Simple knowledge of nodular graphite well cover in life [2019-06-03] Ductile iron manhole covers are generally divided into round and square ones. In terms of urban road administration, round manhole covers are generally used, because round manhole covers are not easy to tilt, which can better protect the safety of pedestrians and vehicles. The use of circle is mainly based on the fact that the length of each diameter of the round manhole cover passing through its center is the same. In this way, if the manhole cover is rolled up by passing vehicles, its diameter will be slightly wider than the lower wellhead no matter how it is rolled up, and the manhole cover will not fall into the wellhead. -
What are the 7 characteristics of nodular cast iron anti-theft manhole cover? [2019-06-03] 1. The chemical and physical characteristics of the new type of nodular cast iron manhole cover use QT500-7 as cast nodular cast iron, which is light in weight, high in strength, good in resistance, corrosion resistance, fatigue resistance, and suitable in cost. Compared with the gray cast iron manhole cover of the same specification and scale, it is 40%~50% lighter in weight and 40%~50% higher in strength than the old type of gray cast iron manhole cover. The old gray cast iron well cover is brittle and simple to fracture. The chemical composition and physical properties of nodular cast iron and gray cast iron are compared (see Table 1 and Table 2). From the comparison of the above chemical composition and physical property data, it can be concluded that the decisive indexes of ductile iron are much higher than that of gray cast iron in terms of tensile strength, elongation, yield strength and ultimate load indenter, and the various data of its chemical composition are much more reasonable than that of gray cast iron. -
What are the five advantages of polymer composite well covers [2019-06-03] 1. Before installation, the foundation of well cover shall be neat and firm, and the inner diameter, length and width shall be determined according to the size of Chongqing composite well cover. 2. When installing Chongqing composite well cover on cement pavement, attention should be paid to the concrete pouring on the masonry of the wellhead, and a concrete protective ring should be built around the wellhead for maintenance for about 10 days. -
Talking about the development prospect and trend of composite well cover [2019-06-03] With the rapid development of urban and rural construction, the demand for Chongqing composite manhole covers, the supporting facilities for new residential areas and roads, has increased sharply. However, the high cost of traditional cast iron manhole covers, serious theft, pedestrian injuries, and vehicle damage have always been a difficult problem for construction departments. -
Three precautions for stainless steel manhole cover of slow chat device [2019-06-03] With the continuous development of the city, urban road construction has also developed. In Chongqing, a new tier city where we live, some sewage well covers on the way have been gradually replaced by some stainless steel invisible well covers -
Some Correct Processes of Stainless Steel Well Cover [2019-06-03] With the development of the times, the size of urban sewage outlets is different. For example, the sewage outlets of some roads with smaller standards will be smaller -
Precautions and installation process of composite well cover [2019-06-03] With the continuous development of technology, manhole covers, as a common material for municipal administration and construction, have developed rapidly. Now, Chongqing manhole cover manufacturer will tell you the installation precautions of composite manhole covers: 1、 In order to keep the appearance of the cover beautiful and the surface pattern and writing clear, thin iron sheet or wood plate shall be used to cover the manhole cover during the construction of asphalt pavement, and the black manhole cover can also be brushed with waste oil to prevent asphalt spraying on the manhole cover
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