The plane configuration, technological process, technological features and main technique and economy indexes of a narrow-trip hot-rolling mill, which is of lower invest and fast gain, are introduced.

Some typical cold bed structures in bar and shape rolling workshops at home andabroad and the principle to configurate reasonably cold bed are introduced.

The application showed that, the device with compact structure and excellent properties had different functions such as preheat, surfacing, keeping layer temperature and heat treatment, which can be used in many steel rolling mills with small investment.

The production operational management of rolling mill is an important part of the production management at iron & steel enterprises.

Application of truss-type wind resistant pillars in light steel plant;