Billet- Spec: GOST 380-1994 (Russian standard): 2SP/PS, 03KP, 3SP/PS, 5SP/PS, etc.; GB700-1988 (Chinese standard): Q195, Q215, Q235, 20Mni, 20Mnsi + V, 25Mnsi, etc.; JIS G 3112 (1987) - Japanese standard: SR235, SR295, SD295A, SD295B, SD345, SD390, SD490; ASTM-615 (American standard): Gr40, Gr60-...