Ribbond steel bars with a nominal diameter of 10mm or more (including 10mm) are rolled with a brand mark on the surface, and are also rolled with the registered factory name (or trademark) and the nominal diameter in millimeters.

First of all, the letters and numbers on the steel bars in the picture are: 4/PG/25? These are the basic information of the steel bars, which is equivalent to our ID card information.

The steel factory that represents the third-grade steel (HRB400) code PG usually has the prefix Pinyin, which may be the factory name or the brand. For example, in Sichuan, CW—Sichuan Weiyuan Steel Plant, CS —Chengshi brand (produced by Chengdu Metallurgical Experimental Factory). PG may be "the steel number of Jiangxi Pingxiang Steel"; then the nominal diameter is 25.

To put it together, it can be understood as the HRB400 steel with a nominal size of 25mm produced by PG - the translation is the third-grade steel with a nominal size of 25mm produced by Pingxiang Iron and Steel