热镀锌钢板生产工艺近30年来发生了很大变化,目前已基本定型,新建的镀锌设备大部是连续热镀锌工艺,其产量约占总量的80％左右。国外把带钢连续热镀锌工艺大体上分成线内退火工艺和线外退火两大类型。据初步计,全世界共拥有不同结构的热镀锌机组186台,各国安装的台数如下表所示。 The production process of hot-dip galvanized steel has undergone great changes over the past 30 years. At present, most of the new galvanized equipment has been continuously hot-dip galvanized, and its output accounts for about 80% of the total. Foreign continuous strip hot dip galvanizing process is generally divided into two types of wire annealing and annealing outside the line. According to the preliminary statistics, a total of 186 hot-dip galvanizing units with different structures have been set up in the world as shown in the following table.