The production process of hot-dip galvanized strip is composed of degreasing, recrystallization annealing, hot-dip galvanizing, leveling and passivation oiling. HUNGTHAI is a professional steel manufacturing in china enterprise, galvanized steel coil exporter china and galvanized steel coil manufacturer.

Hot-dip galvanized sheets can be classified according to different rules.

  1. According to processing performance: general purpose, mechanical occlusion, stamping, deep drawing, special killed steel deep drawing, non-aging deep drawing, etc.
  2. According to the substrate: it can be divided into two categories: hot-rolled galvanized sheet and cold-rolled galvanized sheet. Hot-rolled galvanized steel sheets are mostly used for construction boards with low requirements, and cold-rolled hot-dip galvanized steel sheets are more widely used.
  3. According to the weight of the zinc layer; the galvanized steel sheet is suitable for anti-corrosion purposes, and the weight of the zinc layer should be adapted to the requirements of the customer.
  4. According to the surface structure: HUNGTHAI‘s products have four kinds of spangles: Regular Spangle, Small Spangle, Large Spangle, Zero Spangle.
    Regular Spangle The diameter of the spangle is generally greater than 4mm, and it is used for commercial purposes such as civil or construction.
    Small Spangle is usually less than 4mm in diameter, Small Spangle is usually used as the substrate of color coated board, or various containers, household appliances, electrical equipment casings, etc.
    Zero Spangle is invisible to the naked eye, with a diameter of less than 1mm, and is mainly used in automobile manufacturing, home appliances or color-coated substrates.
  5. According to the surface quality: inspect and classify the product surface.
  6. According to the surface treatment: In order to ensure that the surface of the galvanized product will not be oxidized before the user uses it, it needs to be treated, such as passivation, oiling, phosphating, paint sealing and no treatment.
    HUNGTHAI METAL can provide customers with all kinds of steel coils and has a strict quality control system. Customers in need are welcome to cooperate.