Will the three steel is steel? It is a steel bar?
Thread steel through the material is divided into two grades of steel (HRB335), three grades of steel (HRB400), which is now commonly used name, but also seismic steel (HRB400E) and so on. Grade 1 steel is wire, and the building materials are Q235 and HPB235. Other wire materials are for industrial use.
Your question is inaccurateThread steels are grade two, grade three, grade four, and even grade fiveFirst grade steel generally refers to the wire rod, also known as wire rod, is a ribbed steel bar
