Classification of stainless steel electric heating pipes: single-end electric heating pipes, double-end electric heating pipes, stainless steel electric heating pipes, radiator electric heating pipes, water heating pipes, dry heating pipes, mould electric heating pipes, high temperature discoloration hoses, hot runner electric heating coils, cigarette equipment electric heating pipes, pharmaceutical mechanical heating pipes, electroplating equipment heating pipes, Teflon heaters, titanium heating rods, far infrared heating pipes, ceramic electric heating pipes Titanium lead-free tin furnace electric heating pipe, heating ring, plastic mechanical electric heating ring, etc. Cast copper heating ring stainless steel fin electric heating tube can be installed in blowing pipe or other static, flowing air heating occasions; in metal stamping, mechanical manufacturing, automobile, textile, food, household appliances and other industries.

From the analysis of a large number of pottery models unearthed, the manufacturers of cast copper heating rings know that the process at that time was to make the master model, that is, the model, and then to make the model, that is, the casting model, according to the parting scheme planned on the master model. Generally simple models are double conformity, while complex models are multi conformity.

From the pottery model unearthed, we can see that there were many kinds of castings at that time, such as tripod, bamboo, halogen and noble. There are also car and horse ornaments, weapons and so on. From the unearthed divination bones, divination tortoises and slave bones, it was possible that divination and animal sacrifice rituals would be performed when the furnace was opened.