1. The thickness of zinc coating of hot dip galvanized sheet and electro galvanized sheet is different
The galvanizing amount of hot galvanizing cannot be too small, generally the minimum is 50~60g/m2 for both sides, and the maximum is 600g/m2. The zinc coating of the galvanized sheet can be very thin, the minimum is 15g/m2, and the maximum is about 100g/m2. In addition, galvanization can be carried out on one side or both sides. Hot galvanizing must be carried out on both sides.
2. There are fundamental differences between hot-dip galvanized sheet and electrogalvanized sheet in coating structure
There is a slightly brittle compound layer between the pure zinc coating of hot-dip galvanized sheet and the steel strip substrate. When the pure zinc coating crystallizes, zinc flakes are mostly formed, and the coating is uniform without pores. The zinc atoms of the galvanized layer are only deposited on the surface of the steel strip, and they are attached to the surface of the steel strip by physical action. There are many holes to air, which is easy to cause pitting corrosion due to corrosive media. Therefore, the hot-dip galvanized sheet is more resistant to corrosion than the galvanized sheet.
3. The heat treatment processes of hot-dip galvanized and electro galvanized sheets are different
Hot dip galvanized sheet is generally made of cold hard plate, which is continuously annealed and hot-dip galvanized on the galvanizing line. The steel strip is heated in a short time and then cooled again, so the strength and plasticity are affected to some extent. Electrogalvanized sheet takes cold rolled sheet as raw material, which basically ensures the same processing performance of cold rolled sheet, but its complex process also increases the production cost.
4. Hot dip galvanized sheet is characterized by thick zinc layer, good corrosion resistance and low production cost compared with electrogalvanized sheet
In the process of hot galvanizing, when the steel plate passes thro

1. SA516GR485N is an American standard container plate delivered in a normalized state, and ASME standard is implemented. SA516GR485N is a carbon steel plate for medium and low temperature pressure vessels. It is commonly used in the petrochemical industry, such as pressure vessel manufacturing, heat exchangers, spherical tanks, reactors, etc. SA516GR485N container plates are used.

2. Chemical composition of SA516GR485N container plate:

Carbon C: 0.20; Manganese Mn: 0.85-1.20; Phosphorus P: 0.010; Sulfur S: 0.002; Silicon Si: 0.15-0.40

3. Mechanical properties of SA516GR485N container plate: tensile yield strength

Tensile strength: 480-620Mpa

Yield strength: 260Mpa

Elongation: 21%

Impact energy: 34J

Z-direction performance of SA516GR485N container plate: Z15 /Z25 /Z35

SA516GR485N container plate flaw detection level: first inspection, second inspection, third inspection

4. The manufacture of SA516GR485N container plate can adopt basic oxygen blowing furnace or electric furnace steelmaking process, and it needs to carry out additional secondary refining and vacuum degassing in the ladle metallurgical furnace (oxygen content is not more than 0.0020%). SA516GR485N belongs to killed steel.

Color-coated rolls are what we usually call polyvinylidene fluoride color-coated rolls. They are very well used in construction, and the main advantage is that they have good UV resistance. In addition, there are other characteristics.
1. Durability and corrosion resistance have a longer service life than galvanized steel sheets.

2. Heat resistance, compared with galvanized steel sheet, it is not so easy to fade under high temperature.

3. Heat reflectivity, which has certain reflective properties for sunlight.

4. Color-coated coils have similar processing performance and spraying performance to galvanized steel sheets.

5. Excellent welding performance.

6. Color-coated coil has excellent performance-price ratio, durable performance and reasonable price, and is a rare coil in the market.

The galvanized steel coil is cured by adopting the domestic and foreign leading granular anti-scratch paint coating technology, which is more than 5 times stronger than the general construction board's scratch resistance, and can resist the scratch of relatively sharp objects. Mainly used in garage doors, rolling shutter doors and windows, home appliances and other fields. The special color-coated board can cooperate with the heating principle of solar polysilicon, has excellent decoration effect and maintenance effect, and has been widely recognized by the solar industry. The main colors are pearlescent silver, golden yellow, and printed LOGO board.

Color-coated color steel coil is an extended product of hot-dip galvanized steel coil. It is a deep-processing product of steel coil produced by surface treatment of galvanized steel coil and then coated with paint. It is suitable for further deep processing of cold-bending forming. It consists of three parts: cold-rolled steel coil substrate, galvanized and coated. Because of its superior weather resistance, formability and recyclability, it is increasingly becoming a substitute for wood. It adopts domestic and foreign leading particle anti-scratch paint coating technology for curing, and its anti-scratch performance is more than 5 times stronger than that of ordinary construction boards, and it can resist the scratches of sharper objects. Mainly used in garage doors, rolling shutter doors and windows, home appliances and other fields.