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Market overview of galvanized sheet
In recent years, the production of galvanized sheet in China has increased year by year, while the import volume has also increased year by year, and the growth rate is even higher than the growth rate of production; After deducting the repeated statistics of production, the consumption of galvanized sheet is about 5.27 million tons. After 1999, the import volume of galvanized sheet exceeded the production volume for the first time, and the self-sufficiency rate of domestic products was less than 50%, with a trend of decreasing year by year.
2022
04-12
Development of galvanized sheet
The increase of domestic consumption of galvanized sheet is mainly driven by imports. In recent years, the import of galvanized sheet has increased year by year. The main imported varieties are galvanized sheet, but the proportion of galvanized sheet imports has decreased year by year; Accordingly, the import proportion of hot-dip galvanized sheet has increased year by year. In 2003, the import volume of hot-dip galvanized sheet exceeded that of electrogalvanized sheet for the first time in China.
2022
04-12
The angle steel is mainly divided into equal angle steel and unequal angle steel.
The specification of angle steel is expressed by the dimension of side length and side thickness. At present, the specification of domestic angle steel is 2-20, and the number of centimeters of side length is taken as the number. The same angle steel often has 2-7 different edge thicknesses. The imported angle steel shall be marked with the actual size and thickness of both sides and relevant standards. Generally, large angle steel is more than 12.5cm long, medium angle steel is between 12.5cm and 5cm long, and small angle steel is less than 5cm long.
2022
04-12
Mechanical properties of angle steel
Tensile test method. Common standard inspection methods include GB/T228-87, JISZ2201, JISZ2241, ASTM A370 ГОСТ 1497, BS18, DIN50145, etc;
2022
04-12