Classification and use of steel.

Rebar

The general length of the rebar is 9 meters and 12 meters. The 9-meter line is mainly used for road construction, and the 12-meter line is mainly used for bridge construction. Thread specification range is generally 6-50 mm, the national allowable deviation. There are three types of rebar based on strength: HRB335, HRB400 and HRB500.

Round steel

Round steel is a round cross-section of solid steel strip, divided into hot rolled, forged and cold drawn three kinds. The specification of hot-rolled round steel is 5.5-250mm, and the small round steel of 5.5-25mm is used as steel bars, bolts and various mechanical parts. Round steel larger than 25 mm is mainly used in the manufacture of mechanical parts or as seamless billets.

Wire

Construction steel wire only Q215 and Q235 two specifications, commonly used specifications are 6.5mm diameter, 8.0mm diameter and 10mm diameter. At present, the largest wire diameter in China can reach 30mm. The wire rod can be used for drawing wire, mesh wire, etc., in addition to reinforcing bars for building reinforced concrete.

A disk snail

Rebar is steel bars coiled together like wire. Compared with the steel bar, its advantage is that the steel bar is only 9-12, which can be cut at will according to the need of use. Used for agitator, reinforcement board, agitator, pendant, etc.