Before starting today's summary and discussion, I would like to ask my friends a question, that is, who knows what a ductile iron manhole cover is, and what is the difference between it and the manhole covers we usually encounter on the street, so friends who are interested in today's topic Let's follow the editor and read on. Of course, if friends have any questions when we share, we must communicate and discuss in a timely manner.
Regarding the difference between ductile iron manhole covers and the manhole covers usually encountered on the street, the editor has summarized for friends how to look at the manhole cover to confirm its specific function, so interested friends can look it up.
The production process of ductile iron manhole covers is divided into five parts, one is softening annealing, the main purpose is to decompose carbides, that is, to reduce the hardness first, so that the subsequent processing becomes easier. The second is normalizing. This step is mainly for the subsequent stainless steel casting. The third is quenching treatment. This step is to make the surface of the manhole cover wear-resistant. The next two steps are mainly to harden the surface.
Let’s summarize the production process of ductile iron manhole covers for friends today. If friends want to know more, or have any new discoveries, they can communicate with us in time. If friends are looking for reliable As for the manufacturer, the editor recommends friends to contact Hebei Wayup Industry. At least the product quality and pricing are very reasonable, and the after-sales service is very good.
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