Steel bar is a cylindrical metal product widely used in multiple fields. According to the different materials and purposes, round bars can be divided into multiple types, each with its specific application scenarios and characteristics.

Q195 and Q235 are both grades of carbon structural steel, and they are both ordinary carbon structural steels, i.e., they do not contain purposely added alloying elements.

Hot rolled round steel bar is a metallurgical term for a type of round steel bar, which is a type of construction steel.

Mild carbon round bar is a round bar material with a low carbon content, usually referring to round bars made of low carbon steel.

Black annealed wire, also known as black high-temperature wire, is a filamentary material made of metal molybdenum, tungsten and other high-temperature materials.

Galvanized wire is mainly used for tying and fixing in construction, agriculture, household and other fields, and excels in anti-corrosion and durability. 

Galvanized grating is a rust-proof treatment carried out after the steel grating is produced. 

Deformed reinforcing steel bar is one kind of reinforcing steel bar.