1.prutky rolled freely concluded in coils from other alloy steel: - circle brand 30hhsn2a diameter 18mm - 160kh. - circle brand 30hhsn2a diameter 28mm - 212kh. - circle brand 30hhsn2a diameter 32mm - 218kh. gost 2590-2006 (chemical .sklad: fe dos. c 0,29%, mn 0.98%, si 1,0%, s 0.005%, cr 0,9%, ni 1.