Electro Galvanized Steel Coil

Electro Galvanized Steel Coil

Steel rusts easily in the air, water or soil andsometimes it is completely damaged. Every year, loss of steel approximatelyaccounts for 1/10 of the entire steel production. So under most circumstances,some measures are taken to convey special features for steel and give itbeautiful decoration surface. Among them, electrolytic zinc plating is commonlyused.     

In dry air, zinc is very stable. In humidair, surface of zinc can produce avery dense film ofbasic zinc carbonate, thus effectively protecting itsinterior from corrosion. When zinc coating is damagedand base steel is exposed, zinc and base steel can form micro-battery, makingbase steel cathode and protect it. Electro galvanized steel coil, also calledelectrolytic galvanized sheet, is manufactured by forming uniform, compact, good combination ofmetal or metal alloy deposited layer on the surface of parts throughelectrolysis. There are many types of this product, including coatingplate, phosphate plate and fingerprint resistant plate.

Detailed Specifications
Wall thickness: 0.4-1.2mm
Width of coil: <1300mm
Material: SECC/SECD/SECE
Internal diameter: 610mm
Weight of Zinc-coating (g/m2): 20-50

There are many features ofelectro galvanized steel coil. In the first place, zinc coating is thick,uniform and non-porous and corrosion resistant. Secondly, zinc coating is verypure so it is corroded very slowly in acid and alkali mist. After treatment byChromic acid passivation,zinc coating becomes white and army green so it has a certain decorativeeffect. Last but not least, with good ductility, so many processes can beperformed without damaging it such as cold punching, rolling and bending. With all these features, electro galvanized steel coil iswidely used in many fields such as machine manufacturing, electronics,precision instruments, chemical, light industry, transportation, weapons,aerospace and nuclear energy, etc.