As one of the important fasteners, screws generally use different surface treatment processes to meet customer requirements.
Galvanizing can be divided into cold galvanizing, mechanical galvanizing and hot-dip galvanizing, of which hot-dip galvanizing is the most popular.
Advantages: strong corrosion resistance; better adhesion and hardness of the galvanized layer; large amount of zinc, and the thickness of the zinc layer is dozens of times that of cold galvanized; cheaper and more environmentally friendly.
2.Dacromet is a new type of anti-corrosion coating, which is the best process to replace traditional electro-galvanizing and hot-dip galvanizing.
Advantages: Superior corrosion resistance: The anti-rust effect is 7-10 times that of traditional galvanizing; high heat resistance, the heat resistance temperature can reach more than 300 ℃; good adhesion and recoating performance; no waste water is generated during production and exhaust gas.