Hot-dip galvanized steel pipe reacts molten metal with the iron matrix to produce an alloy layer, thereby combining the matrix and the coating.

The selection of  prepainted steel sheet mainly refers to the selection of mechanical properties, substrate type (coating type) and coating weight, front coating performance and reverse coating performance.

Stainless steel is a kind of material with a brightness close to that of a mirror. It is hard and cold to the touch. It is a relatively avant-garde decorative material and has a series of characteristics such as excellent corrosion resistance, formability, compatibility and strength.

Carbon steel, also called carbon steel, refers to an iron-carbon alloy with a carbon content of less than 2%.

The main component of stainless steel is Cr (chromium). Only when the Cr content reaches a certain value, the steel has corrosion resistance. Therefore, stainless steel generally has a Cr (chromium) content of at least 10.5%.

Type 316 - After 304, the second most widely used steel type, mainly used in the food industry and surgical equipment, the addition of molybdenum gives it a special structure that resists corrosion. Because it has better resistance to chloride corrosion than 304, it is also used as "marine steel". SS316 is usually used in nuclear fuel recovery devices. Grade 18/10 stainless steel is also generally qualified for this application grade.