Nodular cast iron manhole covers are always used for drainage, so how should we choose? What are the precautions when choosing? Let me give you a detailed introduction.
Ductile iron manhole covers are very common in our lives. Products are mostly used in road drainage, community drainage and drainage in other areas in my country. This kind of manhole cover has the characteristics of non-slip, compression resistance, shock resistance and anti-theft. According to the production specifications or the pressure that the products are subjected to, the production process and the selling price are also different. When purchasing and using, you need to pay attention to several things:
1. The size of ductile iron manhole cover, the size of ductile iron manhole cover, the standard plate width of general processing modulus is 995mm, and the gap between the plates is 5mm. When purchasing, discuss with the manufacturer according to the specific conditions of use, and pay attention to the need to meet the production technical standards of the manhole cover.
2. Pay attention to the professional manufacturers when purchasing, so that the quality of such products can be guaranteed.
3. Pay attention to the load-bearing range of the manhole cover. This is very important. When the load-bearing range of the manhole cover is overweight, things may threaten road traffic safety or personal safety.
4. Pay attention to the quality of the product, check whether it has a certificate of conformity, the product specification, whether the product meets the requirements of production technical standards, etc.
5. When buying, pay attention to check whether the pattern of the manhole cover is clear, whether there are other welding appearance problems, and there are no problems that affect the performance.
The above are several items that should be considered when purchasing ductile iron manhole covers. In the process of purchasing products, you must not be too greedy for cheap and buy manhole covers of substandard quality.