The main application of steel bolts: general line is mainly used for construction of reinforced concrete structure.And through reinforcement with cold drawing can also be made of steel wire. For strapping with ordinary low-carbon steel without twisting control. Hot-rolled wire rod (ZBH4403- 88), no twist control cold, hot-rolled wire rod by the non-high-speed wire rod rolling mill to take control of cooling made of the same material and general line, but no torsional cold, hot-rolled wire rod with high dimensional accuracy, better surface quality, higher mechanical properties and so on.
Steel structure is divided into non-torsion control bolt cold and hot-rolled wire rod.And there are three level in size accuracy,that is A, B, C. A, B, C grade apply to drawing, construction, packaging and welding purposes. B, C-level precision apply to make of bolts, screws and nuts. Quality carbon steel wire rod (GB4354-84), high-quality carbon steel wire rod is rolled with high-quality carbon structural steel. Therefore, such steel bolts are largely used in the wire steel.
