What is the difference between galvanized angle steel and non-galvanized angle steel

　　Galvanized angle steel is divided into hot-dip galvanized angle steel and cold-dip galvanized angle steel. Hot-dip galvanized angle steel is also called hot-dip galvanized angle steel or hot-dip galvanized angle steel. The cold-dip galvanized coating mainly ensures the full contact between the zinc powder and the steel through the electrochemical principle, and generates an electrode potential difference for anti-corrosion.

　　Ordinary angle steel mainly refers to angle steel that has not been directly hot-rolled. This standard specifies the surface quality of angle steel. In general, harmful defects such as scars, delaminations, cracks, etc. should not appear during use.

　　Hot-dip galvanized angle steel has the characteristics of surface gloss, uniform zinc layer, no leakage, no drip slip, strong adhesion, and strong corrosion resistance. In the suburban environment, the standard thickness of the hot-dip galvanized anti-rust layer can be maintained for more than 50 years without repair; in urban or offshore areas, the standard hot-dip galvanized anti-rust layer can be maintained for more than 20 years without repair;

　　Ordinary ones won't work. The surface quality of non-galvanized angle steel is stipulated in the standard, and it is generally required that there should be no harmful defects in use, such as delamination, scarring, cracks, etc. The allowable range of geometric shape deviation of angle steel is also stipulated in the standard, generally including bending degree, side width, side thickness, top angle, theoretical weight, etc., and it is stipulated that the angle steel must not have significant torsion.