... etc. metal block round 1. Grades: Gr1, Gr2, Gr3, Gr5, Gr7, Gr9, Gr11, Gr12, Gr23 or as order2. Standard: ASTM B348, ASTM ... /m)Hot processing< 356Hot processing≥3510Hot processed, polished&cold processed round, square bar< 354≥355Product packaging show: Our internal filling material ...