Is there a rebar grade symbol on the physical rebar? Such as secondary steel HRB335?

a: there is a steel bar brand on the physical steel bar, which is represented by Arabic numerals and English letters. : HRBF335, HRBF4 and HRBF5 are denoted by 3, 4 and 5 respectively. ? How do you answer this question? Actually, strictly speaking, in the future, steel bars are only symbols, and there is no name for several grades of steel. ?

Types and symbols of steel bars ...

I'll take a paragraph from the acceptance specification and insert a picture for your reference:

(3) Signs of ribbed steel bars have changed greatly. In addition to the brand mark on the surface of ribbed steel bars, the registered factory name (or trademark) and the number of millimeters in diameter can be rolled in turn. Steel grades are expressed in Arabic numerals and English letters. HRB335? , HRB4 and HRB5 are denoted by 3, 4 and 5 respectively, and HRBF335, HRBF4 and HRBF5 are denoted by C3, C4 and C5 respectively; The name of the factory is expressed by the Chinese phonetic prefix; The number of millimeters in diameter is expressed in Arabic numerals. With the old standard HRB335? Compared with the regulations indicated by 2, 3 and 4 respectively, HRB4 and HRB5 have great changes, which should attract the attention of relevant construction, supervision and inspection personnel. That is to say, today, I saw that the steel bar surface is engraved with "4", which is HRB4, the so-called grade III rebar, but in the future, the grade III rebar will not be weighed, so it will be called HRB4. Similarly, today, I saw that the steel bar surface is engraved with "3", which is the previous grade III steel or grade II steel, so we should carefully check it.