pre painted galvanized steel sheet precoated zincalume steel color coated steel coil thailand1

There are two designs for pre-treatment process layout. One is to install a pre cleaning section before the inlet loop and a pre-treatment section after the loop. This design is widely adopted by some color coating line suppliers in Europe, such as Fata Hunter Company; Another design is to only install a pre-treatment section after the loop, without a pre cleaning section before the loop. This design is adopted by color coating line suppliers in Asia, such as Nippon Steel and Pohang. The first design advantage is that when the surface quality of the raw materials is poor, the pre degreasing treatment section set in front of the inlet loop can remove the large particle impurities on the surface of the incoming materials, avoiding bringing them into the loop and sticking to the rollers of the loop, which will affect the surface quality of the incoming materials later on. The disadvantage is high consumption and cost.