Special-shaped steel is the abbreviation of complex and special-shaped section steel. It is a kind of section steel and is different from the name of simple section steel. According to different processes, it can be divided into hot-rolled special-shaped steel, cold-drawn (cold-drawn) special-shaped steel, cold-formed special-shaped steel, welded special-shaped steel, etc. Usually special-shaped steel refers specifically to hot-rolled special-shaped steel. Hot-rolled special-shaped steel is divided into square steel, round steel, flat steel and hot-rolled steel in common shapes. Introduction
Basic knowledge of special-shaped steel
Classification of steel: According to the chemical composition, steel is divided into carbon steel and alloy steel; according to the use of steel, it can be divided into structural steel, tool steel and special performance steel.
The main carbon steel used in construction projects is Q235 steel. In steel structures, various special-shaped steels, steel plates and steel pipes are mainly rolled using Q235 steel. ​
Characteristics Due to the particularity and singleness of its use, special-shaped steel often has higher accuracy requirements than simple section steel, which places higher requirements on equipment capabilities. Due to its complex cross-section shape, especially the special-shaped steel for many specific occasions, there is even little experience to draw on, which makes the pass design and production more difficult than that of simple cross-section steel. Therefore, the production cost of special-shaped steel is higher than that of simple-section steel. Special-shaped steels vary greatly in shape and size, and many are dedicated to a certain industry or specific occasion, so the market demand for a single variety is often not very large. Therefore, the scale of special-shaped steel production systems is often not very large.