Galvanized methods Steel Coil

There is no strict definition for small span products. In general, small span products are referred to as small span products. The composition of small spangle products is the same as that of large spangle products. To overcome the poor coating performance of large spangle products, various methods are used to inhibit the growth of spangle during the cooling process, preferably forming a small diameter. spangle has very good coating performance because it does not have a mirror-smooth surface like large spangle, nor is it as smooth as products without spangle.